{
    "mode": "man",
    "parameter": "wget",
    "section": "1",
    "url": "https://www.chedong.com/phpMan.php/man/wget/1/json",
    "generated": "2026-08-06T09:30:16Z",
    "synopsis": "wget [option]... [URL]...",
    "sections": {
        "NAME": {
            "content": "Wget - The non-interactive network downloader.\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "wget [option]... [URL]...\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "GNU Wget is a free utility for non-interactive download of files from the Web.  It supports\nHTTP, HTTPS, and FTP protocols, as well as retrieval through HTTP proxies.\n\nWget is non-interactive, meaning that it can work in the background, while the user is not\nlogged on.  This allows you to start a retrieval and disconnect from the system, letting Wget\nfinish the work.  By contrast, most of the Web browsers require constant user's presence,\nwhich can be a great hindrance when transferring a lot of data.\n\nWget can follow links in HTML, XHTML, and CSS pages, to create local versions of remote web\nsites, fully recreating the directory structure of the original site.  This is sometimes\nreferred to as \"recursive downloading.\"  While doing that, Wget respects the Robot Exclusion\nStandard (/robots.txt).  Wget can be instructed to convert the links in downloaded files to\npoint at the local files, for offline viewing.\n\nWget has been designed for robustness over slow or unstable network connections; if a\ndownload fails due to a network problem, it will keep retrying until the whole file has been\nretrieved.  If the server supports regetting, it will instruct the server to continue the\ndownload from where it left off.\n",
            "subsections": []
        },
        "OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "Option Syntax",
                    "content": "Since Wget uses GNU getopt to process command-line arguments, every option has a long form\nalong with the short one.  Long options are more convenient to remember, but take time to\ntype.  You may freely mix different option styles, or specify options after the command-line\narguments.  Thus you may write:\n\nwget -r --tries=10 http://fly.srk.fer.hr/ -o log\n\nThe space between the option accepting an argument and the argument may be omitted.  Instead\nof -o log you can write -olog.\n\nYou may put several options that do not require arguments together, like:\n\nwget -drc <URL>\n\nThis is completely equivalent to:\n\nwget -d -r -c <URL>\n\nSince the options can be specified after the arguments, you may terminate them with --.  So\nthe following will try to download URL -x, reporting failure to log:\n\nwget -o log -- -x\n\nThe options that accept comma-separated lists all respect the convention that specifying an\nempty list clears its value.  This can be useful to clear the .wgetrc settings.  For\ninstance, if your .wgetrc sets \"excludedirectories\" to /cgi-bin, the following example will\nfirst reset it, and then set it to exclude /~nobody and /~somebody.  You can also clear the\nlists in .wgetrc.\n\nwget -X \"\" -X /~nobody,/~somebody\n\nMost options that do not accept arguments are boolean options, so named because their state\ncan be captured with a yes-or-no (\"boolean\") variable.  For example, --follow-ftp tells Wget\nto follow FTP links from HTML files and, on the other hand, --no-glob tells it not to perform\nfile globbing on FTP URLs.  A boolean option is either affirmative or negative (beginning\nwith --no).  All such options share several properties.\n\nUnless stated otherwise, it is assumed that the default behavior is the opposite of what the\noption accomplishes.  For example, the documented existence of --follow-ftp assumes that the\ndefault is to not follow FTP links from HTML pages.\n\nAffirmative options can be negated by prepending the --no- to the option name; negative\noptions can be negated by omitting the --no- prefix.  This might seem superfluous---if the\ndefault for an affirmative option is to not do something, then why provide a way to\nexplicitly turn it off?  But the startup file may in fact change the default.  For instance,\nusing \"followftp = on\" in .wgetrc makes Wget follow FTP links by default, and using\n--no-follow-ftp is the only way to restore the factory default from the command line.\n"
                },
                {
                    "name": "Basic Startup Options",
                    "content": ""
                },
                {
                    "name": "-V",
                    "content": "",
                    "flag": "-V"
                },
                {
                    "name": "--version",
                    "content": "Display the version of Wget.\n",
                    "long": "--version"
                },
                {
                    "name": "-h",
                    "content": "",
                    "flag": "-h"
                },
                {
                    "name": "--help",
                    "content": "Print a help message describing all of Wget's command-line options.\n",
                    "long": "--help"
                },
                {
                    "name": "-b",
                    "content": "",
                    "flag": "-b"
                },
                {
                    "name": "--background",
                    "content": "Go  to  background immediately after startup.  If no output file is specified via the -o,\noutput is redirected to wget-log.\n",
                    "long": "--background"
                },
                {
                    "name": "-e _",
                    "content": "--execute command\nExecute command as if it were a part of .wgetrc.  A command thus invoked will be executed\nafter the commands in .wgetrc, thus taking precedence over them.  If you need to  specify\nmore than one wgetrc command, use multiple instances of -e.\n",
                    "flag": "-e"
                },
                {
                    "name": "Logging and Input File Options",
                    "content": ""
                },
                {
                    "name": "-o _",
                    "content": "--output-file=logfile\nLog all messages to logfile.  The messages are normally reported to standard error.\n",
                    "flag": "-o"
                },
                {
                    "name": "-a _",
                    "content": "--append-output=logfile\nAppend  to  logfile.   This  is  the  same  as  -o, only it appends to logfile instead of\noverwriting the old log file.  If logfile does not exist, a new file is created.\n",
                    "flag": "-a"
                },
                {
                    "name": "-d",
                    "content": "",
                    "flag": "-d"
                },
                {
                    "name": "--debug",
                    "content": "Turn on debug output, meaning various information important to the developers of Wget  if\nit  does  not  work  properly.  Your system administrator may have chosen to compile Wget\nwithout debug support, in which case -d will not work.  Please note that  compiling  with\ndebug  support  is  always safe---Wget compiled with the debug support will not print any\ndebug info unless requested with -d.\n",
                    "long": "--debug"
                },
                {
                    "name": "-q",
                    "content": "",
                    "flag": "-q"
                },
                {
                    "name": "--quiet",
                    "content": "Turn off Wget's output.\n",
                    "long": "--quiet"
                },
                {
                    "name": "-v",
                    "content": "",
                    "flag": "-v"
                },
                {
                    "name": "--verbose",
                    "content": "Turn on verbose output, with all the available data.  The default output is verbose.\n",
                    "long": "--verbose"
                },
                {
                    "name": "-nv",
                    "content": ""
                },
                {
                    "name": "--no-verbose",
                    "content": "Turn off verbose without being completely quiet (use -q for that), which means that error\nmessages and basic information still get printed.\n\n--report-speed=type\nOutput bandwidth as type.  The only accepted value is bits.\n",
                    "long": "--no-verbose"
                },
                {
                    "name": "-i _",
                    "content": "--input-file=file\nRead URLs from a local or external file.  If - is specified as file, URLs are  read  from\nthe standard input.  (Use ./- to read from a file literally named -.)\n\nIf this function is used, no URLs need be present on the command line.  If there are URLs\nboth  on  the  command  line and in an input file, those on the command lines will be the\nfirst ones to be retrieved.  If --force-html is not specified, then file  should  consist\nof a series of URLs, one per line.\n\nHowever,  if  you  specify  --force-html, the document will be regarded as html.  In that\ncase you may have problems with relative links, which you  can  solve  either  by  adding\n\"<base href=\"url\">\" to the documents or by specifying --base=url on the command line.\n\nIf the file is an external one, the document will be automatically treated as html if the\nContent-Type matches text/html.  Furthermore, the file's location will be implicitly used\nas base href if none was specified.\n\n--input-metalink=file\nDownloads files covered in local Metalink file. Metalink version 3 and 4 are supported.\n",
                    "flag": "-i"
                },
                {
                    "name": "--keep-badhash",
                    "content": "Keeps  downloaded  Metalink's  files  with a bad hash. It appends .badhash to the name of\nMetalink's files which have a checksum  mismatch,  except  without  overwriting  existing\nfiles.\n",
                    "long": "--keep-badhash"
                },
                {
                    "name": "--metalink-over-http",
                    "content": "Issues  HTTP  HEAD  request  instead  of GET and extracts Metalink metadata from response\nheaders. Then it switches to Metalink download.  If no valid Metalink metadata is  found,\nit falls back to ordinary HTTP download.  Enables Content-Type: application/metalink4+xml\nfiles download/processing.\n\n--metalink-index=number\nSet  the  Metalink  application/metalink4+xml metaurl ordinal NUMBER. From 1 to the total\nnumber of \"application/metalink4+xml\" available.  Specify 0 or inf to  choose  the  first\ngood  one.   Metaurls, such as those from a --metalink-over-http, may have been sorted by\npriority key's value; keep this in mind to choose the right NUMBER.\n",
                    "long": "--metalink-over-http"
                },
                {
                    "name": "--preferred-location",
                    "content": "Set preferred location for Metalink resources. This has effect if multiple resources with\nsame priority are available.\n",
                    "long": "--preferred-location"
                },
                {
                    "name": "--xattr",
                    "content": "Enable use of file system's extended attributes to save the original URL and the  Referer\nHTTP header value if used.\n\nBe  aware  that  the  URL  might  contain  private  information  like  access  tokens  or\ncredentials.\n",
                    "long": "--xattr"
                },
                {
                    "name": "-F",
                    "content": "",
                    "flag": "-F"
                },
                {
                    "name": "--force-html",
                    "content": "When input is read from a file, force it to be treated as an HTML file.  This enables you\nto retrieve relative links from existing HTML files on your local disk, by adding  \"<base\nhref=\"url\">\" to HTML, or using the --base command-line option.\n",
                    "long": "--force-html"
                },
                {
                    "name": "-B _",
                    "content": "--base=URL\nResolves  relative  links using URL as the point of reference, when reading links from an\nHTML file specified via the -i/--input-file option (together with --force-html,  or  when\nthe  input  file  was  fetched  remotely  from  a  server describing it as HTML). This is\nequivalent to the presence of a \"BASE\" tag in the HTML input file, with URL as the  value\nfor the \"href\" attribute.\n\nFor  instance, if you specify http://foo/bar/a.html for URL, and Wget reads ../baz/b.html\nfrom the input file, it would be resolved to http://foo/baz/b.html.\n\n--config=FILE\nSpecify the location of a startup file you wish to use instead of the default one(s). Use\n--no-config to disable reading of config files.  If both  --config  and  --no-config  are\ngiven, --no-config is ignored.\n\n--rejected-log=logfile\nLogs  all  URL  rejections  to logfile as comma separated values.  The values include the\nreason of rejection, the URL and the parent URL it was found in.\n",
                    "flag": "-B"
                },
                {
                    "name": "Download Options",
                    "content": "--bind-address=ADDRESS\nWhen making client TCP/IP connections, bind to ADDRESS on the local machine.  ADDRESS may\nbe specified as a hostname or IP address.  This option can be useful if your  machine  is\nbound to multiple IPs.\n\n--bind-dns-address=ADDRESS\n[libcares  only]  This  address overrides the route for DNS requests. If you ever need to\ncircumvent the  standard  settings  from  /etc/resolv.conf,  this  option  together  with\n--dns-servers  is your friend.  ADDRESS must be specified either as IPv4 or IPv6 address.\nWget needs to be built with libcares for this option to be available.\n\n--dns-servers=ADDRESSES\n[libcares only] The given address(es) override the standard nameserver  addresses,   e.g.\nas  configured  in  /etc/resolv.conf.   ADDRESSES may be specified either as IPv4 or IPv6\naddresses, comma-separated.  Wget needs to be built with libcares for this option  to  be\navailable.\n"
                },
                {
                    "name": "-t _",
                    "content": "--tries=number\nSet number of tries to number. Specify 0 or inf for infinite retrying.  The default is to\nretry  20  times,  with  the  exception of fatal errors like \"connection refused\" or \"not\nfound\" (404), which are not retried.\n",
                    "flag": "-t"
                },
                {
                    "name": "-O _",
                    "content": "--output-document=file\nThe documents will not be written to the appropriate files, but all will be  concatenated\ntogether  and  written  to  file.   If  -  is  used as file, documents will be printed to\nstandard output, disabling link conversion.  (Use ./- to print to a file literally  named\n-.)\n\nUse  of  -O  is  not intended to mean simply \"use the name file instead of the one in the\nURL;\" rather, it is analogous to shell redirection: wget -O file http://foo  is  intended\nto  work  like  wget  -O - http://foo > file; file will be truncated immediately, and all\ndownloaded content will be written there.\n\nFor this reason, -N (for timestamp-checking) is not supported  in  combination  with  -O:\nsince  file  is always newly created, it will always have a very new timestamp. A warning\nwill be issued if this combination is used.\n\nSimilarly, using -r or -p with -O may not work as you expect: Wget  won't  just  download\nthe  first  file to file and then download the rest to their normal names: all downloaded\ncontent will be placed in  file.  This  was  disabled  in  version  1.11,  but  has  been\nreinstated  (with  a  warning) in 1.11.2, as there are some cases where this behavior can\nactually have some use.\n\nA combination with -nc is only accepted if the given output file does not exist.\n\nNote that a combination with -k is only permitted when downloading a single document,  as\nin  that  case it will just convert all relative URIs to external ones; -k makes no sense\nfor multiple URIs when they're all being downloaded to a single file; -k can be used only\nwhen the output is a regular file.\n",
                    "flag": "-O"
                },
                {
                    "name": "-nc",
                    "content": ""
                },
                {
                    "name": "--no-clobber",
                    "content": "If a file is downloaded more than once in the same directory, Wget's behavior depends  on\na  few  options,  including  -nc.  In certain cases, the local file will be clobbered, or\noverwritten, upon repeated download.  In other cases it will be preserved.\n\nWhen running Wget without -N, -nc, -r, or -p, downloading  the  same  file  in  the  same\ndirectory  will  result  in the original copy of file being preserved and the second copy\nbeing named file.1.  If that file is downloaded yet again, the third copy will  be  named\nfile.2, and so on.  (This is also the behavior with -nd, even if -r or -p are in effect.)\nWhen  -nc  is  specified,  this  behavior is suppressed, and Wget will refuse to download\nnewer copies  of  file.   Therefore,  \"\"no-clobber\"\"  is  actually  a  misnomer  in  this\nmode---it's  not  clobbering  that's  prevented  (as  the  numeric  suffixes were already\npreventing clobbering), but rather the multiple version saving that's prevented.\n\nWhen running Wget with -r or -p, but without -N, -nd, or -nc, re-downloading a file  will\nresult  in  the  new  copy  simply  overwriting  the  old.   Adding -nc will prevent this\nbehavior, instead causing the original version to be preserved and any  newer  copies  on\nthe server to be ignored.\n\nWhen running Wget with -N, with or without -r or -p, the decision as to whether or not to\ndownload a newer copy of a file depends on the local and remote timestamp and size of the\nfile.  -nc may not be specified at the same time as -N.\n\nA  combination  with  -O/--output-document is only accepted if the given output file does\nnot exist.\n\nNote that when -nc is specified, files with the suffixes .html or  .htm  will  be  loaded\nfrom the local disk and parsed as if they had been retrieved from the Web.\n\n--backups=backups\nBefore  (over)writing  a file, back up an existing file by adding a .1 suffix (1 on VMS)\nto the file name.  Such backup files are rotated to .2, .3, and so on, up to backups (and\nlost beyond that).\n",
                    "long": "--no-clobber"
                },
                {
                    "name": "--no-netrc",
                    "content": "Do not try to obtain credentials from .netrc file. By default .netrc file is searched for\ncredentials in case none have been passed on command line and authentication is required.\n",
                    "long": "--no-netrc"
                },
                {
                    "name": "-c",
                    "content": "",
                    "flag": "-c"
                },
                {
                    "name": "--continue",
                    "content": "Continue getting a partially-downloaded file.  This is useful when you want to finish  up\na download started by a previous instance of Wget, or by another program.  For instance:\n\nwget -c ftp://sunsite.doc.ic.ac.uk/ls-lR.Z\n\nIf  there  is  a file named ls-lR.Z in the current directory, Wget will assume that it is\nthe first portion of the remote file, and will ask the server to continue  the  retrieval\nfrom an offset equal to the length of the local file.\n\nNote  that  you don't need to specify this option if you just want the current invocation\nof Wget to retry downloading a file should the connection be lost midway  through.   This\nis  the  default behavior.  -c only affects resumption of downloads started prior to this\ninvocation of Wget, and whose local files are still sitting around.\n\nWithout -c, the previous example would  just  download  the  remote  file  to  ls-lR.Z.1,\nleaving the truncated ls-lR.Z file alone.\n\nIf you use -c on a non-empty file, and the server does not support continued downloading,\nWget will restart the download from scratch and overwrite the existing file entirely.\n\nBeginning with Wget 1.7, if you use -c on a file which is of equal size as the one on the\nserver, Wget will refuse to download the file and print an explanatory message.  The same\nhappens  when  the  file is smaller on the server than locally (presumably because it was\nchanged on the server since your last download  attempt)---because  \"continuing\"  is  not\nmeaningful, no download occurs.\n\nOn  the other side of the coin, while using -c, any file that's bigger on the server than\nlocally  will  be  considered  an  incomplete  download  and  only   \"(length(remote)   -\nlength(local))\" bytes will be downloaded and tacked onto the end of the local file.  This\nbehavior  can  be  desirable  in  certain  cases---for  instance,  you can use wget -c to\ndownload just the new portion that's been appended to a data collection or log file.\n\nHowever, if the file is bigger on the server because it's been  changed,  as  opposed  to\njust  appended  to, you'll end up with a garbled file.  Wget has no way of verifying that\nthe local file is really a valid prefix of the remote file.  You need  to  be  especially\ncareful of this when using -c in conjunction with -r, since every file will be considered\nas an \"incomplete download\" candidate.\n\nAnother  instance  where  you'll get a garbled file if you try to use -c is if you have a\nlame HTTP proxy that inserts a \"transfer interrupted\" string into the local file.  In the\nfuture a \"rollback\" option may be added to deal with this case.\n\nNote that -c only works with FTP servers and with HTTP servers that support  the  \"Range\"\nheader.\n\n--start-pos=OFFSET\nStart  downloading  at  zero-based  position  OFFSET.   Offset may be expressed in bytes,\nkilobytes with the `k' suffix, or megabytes with the `m' suffix, etc.\n\n--start-pos has higher precedence over --continue.  When --start-pos and  --continue  are\nboth specified, wget will emit a warning then proceed as if --continue was absent.\n\nServer  support  for  continued  download is required, otherwise --start-pos cannot help.\nSee -c for details.\n\n--progress=type\nSelect the type of the progress indicator you wish to use.  Legal  indicators  are  \"dot\"\nand \"bar\".\n\nThe  \"bar\"  indicator is used by default.  It draws an ASCII progress bar graphics (a.k.a\n\"thermometer\" display) indicating the status of retrieval.  If the output is not  a  TTY,\nthe \"dot\" bar will be used by default.\n\nUse  --progress=dot  to switch to the \"dot\" display.  It traces the retrieval by printing\ndots on the screen, each dot representing a fixed amount of downloaded data.\n\nThe progress type can also take one or more parameters.  The parameters vary based on the\ntype selected.  Parameters to type are passed by appending them to the type sperated by a\ncolon (:) like this: --progress=type:parameter1:parameter2.\n\nWhen using the dotted retrieval, you  may  set  the  style  by  specifying  the  type  as\ndot:style.   Different  styles  assign  different meaning to one dot.  With the \"default\"\nstyle each dot represents 1K, there are ten dots in a cluster and 50 dots in a line.  The\n\"binary\" style has a more \"computer\"-like orientation---8K dots, 16-dots clusters and  48\ndots per line (which makes for 384K lines).  The \"mega\" style is suitable for downloading\nlarge  files---each  dot represents 64K retrieved, there are eight dots in a cluster, and\n48 dots on each line (so each line contains 3M).  If \"mega\" is not enough  then  you  can\nuse  the  \"giga\"  style---each  dot  represents  1M  retrieved, there are eight dots in a\ncluster, and 32 dots on each line (so each line contains 32M).\n\nWith --progress=bar, there are currently two possible parameters, force and noscroll.\n\nWhen the output is not a TTY, the progress bar  always  falls  back  to  \"dot\",  even  if\n--progress=bar was passed to Wget during invocation. This behaviour can be overridden and\nthe \"bar\" output forced by using the \"force\" parameter as --progress=bar:force.\n\nBy default, the bar style progress bar scroll the name of the file from left to right for\nthe  file  being  downloaded  if the filename exceeds the maximum length allotted for its\ndisplay.  In certain cases, such as with  --progress=bar:force,  one  may  not  want  the\nscrolling filename in the progress bar.  By passing the \"noscroll\" parameter, Wget can be\nforced to display as much of the filename as possible without scrolling through it.\n\nNote  that  you  can set the default style using the \"progress\" command in .wgetrc.  That\nsetting may be overridden from the command line.  For example, to force  the  bar  output\nwithout scrolling, use --progress=bar:force:noscroll.\n",
                    "long": "--continue"
                },
                {
                    "name": "--show-progress",
                    "content": "Force wget to display the progress bar in any verbosity.\n\nBy  default,  wget only displays the progress bar in verbose mode.  One may however, want\nwget to display the progress bar on screen in conjunction with any other verbosity  modes\nlike  --no-verbose  or --quiet.  This is often a desired a property when invoking wget to\ndownload several small/large files.  In such a case, wget could simply  be  invoked  with\nthis parameter to get a much cleaner output on the screen.\n\nThis  option will also force the progress bar to be printed to stderr when used alongside\nthe --output-file option.\n",
                    "long": "--show-progress"
                },
                {
                    "name": "-N",
                    "content": "",
                    "flag": "-N"
                },
                {
                    "name": "--timestamping",
                    "content": "Turn on time-stamping.\n",
                    "long": "--timestamping"
                },
                {
                    "name": "--no-if-modified-since",
                    "content": "Do not send If-Modified-Since header in -N mode. Send preliminary HEAD  request  instead.\nThis has only effect in -N mode.\n",
                    "long": "--no-if-modified-since"
                },
                {
                    "name": "--no-use-server-timestamps",
                    "content": "Don't set the local file's timestamp by the one on the server.\n\nBy  default,  when  a  file is downloaded, its timestamps are set to match those from the\nremote file. This allows the use of --timestamping on  subsequent  invocations  of  wget.\nHowever,  it  is  sometimes  useful  to  base  the  local file's timestamp on when it was\nactually downloaded; for that purpose, the  --no-use-server-timestamps  option  has  been\nprovided.\n",
                    "long": "--no-use-server-timestamps"
                },
                {
                    "name": "-S",
                    "content": "",
                    "flag": "-S"
                },
                {
                    "name": "--server-response",
                    "content": "Print the headers sent by HTTP servers and responses sent by FTP servers.\n",
                    "long": "--server-response"
                },
                {
                    "name": "--spider",
                    "content": "When invoked with this option, Wget will behave as a Web spider, which means that it will\nnot download the pages, just check that they are there.  For example, you can use Wget to\ncheck your bookmarks:\n\nwget --spider --force-html -i bookmarks.html\n\nThis  feature needs much more work for Wget to get close to the functionality of real web\nspiders.\n",
                    "long": "--spider"
                },
                {
                    "name": "-T seconds",
                    "content": "--timeout=seconds\nSet  the  network  timeout  to  seconds  seconds.   This  is  equivalent  to   specifying\n--dns-timeout, --connect-timeout, and --read-timeout, all at the same time.\n\nWhen  interacting with the network, Wget can check for timeout and abort the operation if\nit takes too long.  This prevents anomalies like hanging  reads  and  infinite  connects.\nThe only timeout enabled by default is a 900-second read timeout.  Setting a timeout to 0\ndisables it altogether.  Unless you know what you are doing, it is best not to change the\ndefault timeout settings.\n\nAll  timeout-related  options  accept  decimal  values, as well as subsecond values.  For\nexample, 0.1 seconds is a legal (though unwise) choice of  timeout.   Subsecond  timeouts\nare useful for checking server response times or for testing network latency.\n\n--dns-timeout=seconds\nSet  the  DNS  lookup timeout to seconds seconds.  DNS lookups that don't complete within\nthe specified time will fail.  By default, there is no timeout on DNS lookups, other than\nthat implemented by system libraries.\n\n--connect-timeout=seconds\nSet the connect timeout  to  seconds  seconds.   TCP  connections  that  take  longer  to\nestablish  will  be  aborted.   By  default, there is no connect timeout, other than that\nimplemented by system libraries.\n\n--read-timeout=seconds\nSet the read (and write) timeout to seconds seconds.  The \"time\" of this  timeout  refers\nto  idle  time:  if,  at any point in the download, no data is received for more than the\nspecified number of seconds, reading fails and the download is  restarted.   This  option\ndoes not directly affect the duration of the entire download.\n\nOf  course,  the  remote  server  may choose to terminate the connection sooner than this\noption requires.  The default read timeout is 900 seconds.\n\n--limit-rate=amount\nLimit the download speed to amount bytes per second.  Amount may be expressed  in  bytes,\nkilobytes   with   the   k  suffix,  or  megabytes  with  the  m  suffix.   For  example,\n--limit-rate=20k will limit the retrieval rate to  20KB/s.   This  is  useful  when,  for\nwhatever reason, you don't want Wget to consume the entire available bandwidth.\n\nThis  option  allows  the  use  of  decimal  numbers,  usually  in conjunction with power\nsuffixes; for example, --limit-rate=2.5k is a legal value.\n\nNote that Wget implements the limiting by sleeping the appropriate amount of time after a\nnetwork read that took less time than specified by the rate.   Eventually  this  strategy\ncauses  the  TCP  transfer to slow down to approximately the specified rate.  However, it\nmay take some time for this balance to be achieved, so don't be surprised if limiting the\nrate doesn't work well with very small files.\n",
                    "flag": "-T"
                },
                {
                    "name": "-w _",
                    "content": "--wait=seconds\nWait the specified number of seconds between the  retrievals.   Use  of  this  option  is\nrecommended,  as  it  lightens  the  server  load  by  making the requests less frequent.\nInstead of in seconds, the time can be specified in minutes  using  the  \"m\"  suffix,  in\nhours using \"h\" suffix, or in days using \"d\" suffix.\n\nSpecifying a large value for this option is useful if the network or the destination host\nis  down,  so that Wget can wait long enough to reasonably expect the network error to be\nfixed before the retry.  The waiting interval specified by this function is influenced by\n\"--random-wait\", which see.\n\n--waitretry=seconds\nIf you don't want Wget to wait between every  retrieval,  but  only  between  retries  of\nfailed  downloads,  you  can  use  this  option.  Wget will use linear backoff, waiting 1\nsecond after the first failure on a given file, then waiting 2 seconds after  the  second\nfailure on that file, up to the maximum number of seconds you specify.\n\nBy default, Wget will assume a value of 10 seconds.\n",
                    "flag": "-w"
                },
                {
                    "name": "--random-wait",
                    "content": "Some  web  sites  may perform log analysis to identify retrieval programs such as Wget by\nlooking for statistically significant similarities in the  time  between  requests.  This\noption causes the time between requests to vary between 0.5 and 1.5 * wait seconds, where\nwait  was  specified  using the --wait option, in order to mask Wget's presence from such\nanalysis.\n\nA 2001 article in a publication devoted to development on  a  popular  consumer  platform\nprovided  code to perform this analysis on the fly.  Its author suggested blocking at the\nclass C address level  to  ensure  automated  retrieval  programs  were  blocked  despite\nchanging DHCP-supplied addresses.\n\nThe  --random-wait  option  was inspired by this ill-advised recommendation to block many\nunrelated users from a web site due to the actions of one.\n",
                    "long": "--random-wait"
                },
                {
                    "name": "--no-proxy",
                    "content": "Don't use proxies, even if the appropriate *proxy environment variable is defined.\n",
                    "long": "--no-proxy"
                },
                {
                    "name": "-Q _",
                    "content": "--quota=quota\nSpecify download quota for automatic retrievals.  The value can  be  specified  in  bytes\n(default), kilobytes (with k suffix), or megabytes (with m suffix).\n\nNote  that  quota  will  never  affect downloading a single file.  So if you specify wget\n-Q10k https://example.com/ls-lR.gz, all of the ls-lR.gz will  be  downloaded.   The  same\ngoes even when several URLs are specified on the command-line.  The quota is checked only\nat  the  end  of  each downloaded file, so it will never result in a partially downloaded\nfile. Thus you may safely type wget -Q2m -i sites---download will be  aborted  after  the\nfile that exhausts the quota is completely downloaded.\n\nSetting quota to 0 or to inf unlimits the download quota.\n",
                    "flag": "-Q"
                },
                {
                    "name": "--no-dns-cache",
                    "content": "Turn  off caching of DNS lookups.  Normally, Wget remembers the IP addresses it looked up\nfrom DNS so it doesn't have to repeatedly contact the DNS server for the same  (typically\nsmall)  set of hosts it retrieves from.  This cache exists in memory only; a new Wget run\nwill contact DNS again.\n\nHowever, it has been reported that in some situations it is not desirable to  cache  host\nnames,  even for the duration of a short-running application like Wget.  With this option\nWget issues a  new  DNS  lookup  (more  precisely,  a  new  call  to  \"gethostbyname\"  or\n\"getaddrinfo\")  each  time  it makes a new connection.  Please note that this option will\nnot affect caching that might be performed by the resolving library  or  by  an  external\ncaching layer, such as NSCD.\n\nIf you don't understand exactly what this option does, you probably won't need it.\n\n--restrict-file-names=modes\nChange  which  characters found in remote URLs must be escaped during generation of local\nfilenames.  Characters that are restricted by this option are escaped, i.e. replaced with\n%HH, where HH is the hexadecimal number that corresponds  to  the  restricted  character.\nThis  option  may  also  be  used  to force all alphabetical cases to be either lower- or\nuppercase.\n\nBy default, Wget escapes the characters that are not valid or safe as part of file  names\non  your  operating system, as well as control characters that are typically unprintable.\nThis option is useful for changing these defaults, perhaps because you are downloading to\na non-native  partition,  or  because  you  want  to  disable  escaping  of  the  control\ncharacters,  or  you want to further restrict characters to only those in the ASCII range\nof values.\n\nThe modes are a comma-separated set of text  values.  The  acceptable  values  are  unix,\nwindows,  nocontrol,  ascii,  lowercase,  and  uppercase. The values unix and windows are\nmutually exclusive (one will override the other), as are lowercase and  uppercase.  Those\nlast  are  special  cases,  as  they  do  not  change the set of characters that would be\nescaped, but rather force local file paths to be converted either to lower- or uppercase.\n\nWhen \"unix\" is specified, Wget escapes the character / and the control characters in  the\nranges 0--31 and 128--159.  This is the default on Unix-like operating systems.\n\nWhen  \"windows\"  is given, Wget escapes the characters \\, |, /, :, ?, \", *, <, >, and the\ncontrol characters in the ranges 0--31 and  128--159.   In  addition  to  this,  Wget  in\nWindows  mode uses + instead of : to separate host and port in local file names, and uses\n@ instead of ? to separate the query portion of the file name from the rest.   Therefore,\na  URL that would be saved as www.xemacs.org:4300/search.pl?input=blah in Unix mode would\nbe saved as www.xemacs.org+4300/search.pl@input=blah in Windows mode.  This mode  is  the\ndefault on Windows.\n\nIf  you  specify  nocontrol, then the escaping of the control characters is also switched\noff. This option may make sense when you are downloading URLs whose names  contain  UTF-8\ncharacters, on a system which can save and display filenames in UTF-8 (some possible byte\nvalues  used  in  UTF-8  byte sequences fall in the range of values designated by Wget as\n\"controls\").\n\nThe ascii mode is used to specify that any bytes whose values are outside  the  range  of\nASCII  characters  (that  is, greater than 127) shall be escaped. This can be useful when\nsaving filenames whose encoding does not match the one used locally.\n",
                    "long": "--no-dns-cache"
                },
                {
                    "name": "-4",
                    "content": "",
                    "flag": "-4"
                },
                {
                    "name": "--inet4-only",
                    "content": "",
                    "long": "--inet4-only"
                },
                {
                    "name": "-6",
                    "content": "",
                    "flag": "-6"
                },
                {
                    "name": "--inet6-only",
                    "content": "Force connecting to IPv4 or IPv6 addresses.  With --inet4-only  or  -4,  Wget  will  only\nconnect  to  IPv4  hosts,  ignoring  AAAA records in DNS, and refusing to connect to IPv6\naddresses specified in URLs.  Conversely, with --inet6-only or -6, Wget will only connect\nto IPv6 hosts and ignore A records and IPv4 addresses.\n\nNeither options should be needed normally.  By default, an IPv6-aware Wget will  use  the\naddress  family  specified  by the host's DNS record.  If the DNS responds with both IPv4\nand IPv6 addresses, Wget will try them in sequence until it finds one it can connect  to.\n(Also see \"--prefer-family\" option described below.)\n\nThese  options can be used to deliberately force the use of IPv4 or IPv6 address families\non dual family systems,  usually  to  aid  debugging  or  to  deal  with  broken  network\nconfiguration.   Only  one  of --inet6-only and --inet4-only may be specified at the same\ntime.  Neither option is available in Wget compiled without IPv6 support.\n",
                    "long": "--inet6-only"
                },
                {
                    "name": "--prefer-family=none/IPv4/IPv6",
                    "content": "When given a choice of several addresses, connect to the addresses with specified address\nfamily first.  The address order returned by DNS is used without change by default.\n\nThis avoids spurious errors and connect attempts when accessing  hosts  that  resolve  to\nboth  IPv6  and IPv4 addresses from IPv4 networks.  For example, www.kame.net resolves to\n2001:200:0:8002:203:47ff:fea5:3085 and to 203.178.141.194.  When the preferred family  is\n\"IPv4\",  the  IPv4  address  is used first; when the preferred family is \"IPv6\", the IPv6\naddress is used first; if the specified value is \"none\", the address  order  returned  by\nDNS is used without change.\n\nUnlike  -4  and  -6,  this  option  doesn't inhibit access to any address family, it only\nchanges the order in which the addresses are accessed.  Also  note  that  the  reordering\nperformed  by  this  option  is stable---it doesn't affect order of addresses of the same\nfamily.  That is, the relative order of all IPv4 addresses  and  of  all  IPv6  addresses\nremains intact in all cases.\n",
                    "long": "--prefer-family",
                    "arg": "none/IPv4/IPv6"
                },
                {
                    "name": "--retry-connrefused",
                    "content": "Consider \"connection refused\" a transient error and try again.  Normally Wget gives up on\na  URL  when it is unable to connect to the site because failure to connect is taken as a\nsign that the server is not running at all and that retries would not help.  This  option\nis  for  mirroring  unreliable sites whose servers tend to disappear for short periods of\ntime.\n\n--user=user\n--password=password\nSpecify the username user and password password for both FTP  and  HTTP  file  retrieval.\nThese  parameters  can  be overridden using the --ftp-user and --ftp-password options for\nFTP connections and the --http-user and --http-password options for HTTP connections.\n",
                    "long": "--retry-connrefused"
                },
                {
                    "name": "--ask-password",
                    "content": "Prompt for  a  password  for  each  connection  established.  Cannot  be  specified  when\n--password is being used, because they are mutually exclusive.\n\n--use-askpass=command\nPrompt  for  a user and password using the specified command.  If no command is specified\nthen the command in the environment variable WGETASKPASS is used.   If  WGETASKPASS  is\nnot set then the command in the environment variable SSHASKPASS is used.\n\nYou  can  set  the  default  command for use-askpass in the .wgetrc.  That setting may be\noverridden from the command line.\n",
                    "long": "--ask-password"
                },
                {
                    "name": "--no-iri",
                    "content": "Turn off internationalized URI (IRI) support. Use --iri to turn it  on.  IRI  support  is\nactivated by default.\n\nYou  can  set  the  default state of IRI support using the \"iri\" command in .wgetrc. That\nsetting may be overridden from the command line.\n\n--local-encoding=encoding\nForce Wget to use encoding as the default system encoding. That affects how Wget converts\nURLs specified as arguments from locale to UTF-8 for IRI support.\n\nWget use the function nllanginfo() and then the \"CHARSET\" environment  variable  to  get\nthe locale. If it fails, ASCII is used.\n\nYou  can  set  the  default local encoding using the \"localencoding\" command in .wgetrc.\nThat setting may be overridden from the command line.\n\n--remote-encoding=encoding\nForce Wget to use encoding as the default remote server encoding.  That affects how  Wget\nconverts URIs found in files from remote encoding to UTF-8 during a recursive fetch. This\noptions is only useful for IRI support, for the interpretation of non-ASCII characters.\n\nFor  HTTP,  remote  encoding  can  be  found  in  HTTP  \"Content-Type\" header and in HTML\n\"Content-Type http-equiv\" meta tag.\n\nYou can set the default encoding using the  \"remoteencoding\"  command  in  .wgetrc.  That\nsetting may be overridden from the command line.\n",
                    "long": "--no-iri"
                },
                {
                    "name": "--unlink",
                    "content": "Force  Wget to unlink file instead of clobbering existing file. This option is useful for\ndownloading to the directory with hardlinks.\n",
                    "long": "--unlink"
                },
                {
                    "name": "Directory Options",
                    "content": ""
                },
                {
                    "name": "-nd",
                    "content": ""
                },
                {
                    "name": "--no-directories",
                    "content": "Do not create a hierarchy of directories when retrieving recursively.  With  this  option\nturned  on,  all  files will get saved to the current directory, without clobbering (if a\nname shows up more than once, the filenames will get extensions .n).\n",
                    "long": "--no-directories"
                },
                {
                    "name": "-x",
                    "content": "",
                    "flag": "-x"
                },
                {
                    "name": "--force-directories",
                    "content": "The opposite of -nd---create a hierarchy of directories, even if one would not have  been\ncreated   otherwise.    E.g.  wget  -x  http://fly.srk.fer.hr/robots.txt  will  save  the\ndownloaded file to fly.srk.fer.hr/robots.txt.\n",
                    "long": "--force-directories"
                },
                {
                    "name": "-nH",
                    "content": ""
                },
                {
                    "name": "--no-host-directories",
                    "content": "Disable generation of host-prefixed directories.   By  default,  invoking  Wget  with  -r\nhttp://fly.srk.fer.hr/   will   create   a   structure   of  directories  beginning  with\nfly.srk.fer.hr/.  This option disables such behavior.\n",
                    "long": "--no-host-directories"
                },
                {
                    "name": "--protocol-directories",
                    "content": "Use the protocol name as a directory component of local file names.   For  example,  with\nthis option, wget -r http://host will save to http/host/... rather than just to host/....\n\n--cut-dirs=number\nIgnore  number  directory  components.  This is useful for getting a fine-grained control\nover the directory where recursive retrieval will be saved.\n\nTake, for example, the directory at ftp://ftp.xemacs.org/pub/xemacs/.  If you retrieve it\nwith -r, it will be saved locally under ftp.xemacs.org/pub/xemacs/.  While the -nH option\ncan remove the ftp.xemacs.org/ part, you are still stuck with pub/xemacs.  This is  where\n--cut-dirs  comes  in  handy; it makes Wget not \"see\" number remote directory components.\nHere are several examples of how --cut-dirs option works.\n\nNo options        -> ftp.xemacs.org/pub/xemacs/\n-nH               -> pub/xemacs/\n-nH --cut-dirs=1  -> xemacs/\n-nH --cut-dirs=2  -> .\n\n--cut-dirs=1      -> ftp.xemacs.org/xemacs/\n...\n\nIf you just want to get rid of the directory structure,  this  option  is  similar  to  a\ncombination  of  -nd  and  -P.   However,  unlike  -nd,  --cut-dirs  does  not  lose with\nsubdirectories---for instance, with -nH --cut-dirs=1, a beta/ subdirectory will be placed\nto xemacs/beta, as one would expect.\n",
                    "long": "--protocol-directories"
                },
                {
                    "name": "-P _",
                    "content": "--directory-prefix=prefix\nSet directory prefix to prefix.  The directory prefix is the directory  where  all  other\nfiles  and  subdirectories  will  be  saved  to, i.e. the top of the retrieval tree.  The\ndefault is . (the current directory).\n",
                    "flag": "-P"
                },
                {
                    "name": "HTTP Options",
                    "content": "--default-page=name\nUse name as the default file name when it isn't known (i.e.,  for  URLs  that  end  in  a\nslash), instead of index.html.\n"
                },
                {
                    "name": "-E",
                    "content": "",
                    "flag": "-E"
                },
                {
                    "name": "--adjust-extension",
                    "content": "If  a  file of type application/xhtml+xml or text/html is downloaded and the URL does not\nend with the regexp \\.[Hh][Tt][Mm][Ll]?, this option will cause the suffix  .html  to  be\nappended  to  the  local filename.  This is useful, for instance, when you're mirroring a\nremote site that uses .asp pages, but you want the mirrored pages to be viewable on  your\nstock  Apache server.  Another good use for this is when you're downloading CGI-generated\nmaterials.    A   URL   like   http://site.com/article.cgi?25   will    be    saved    as\narticle.cgi?25.html.\n\nNote  that filenames changed in this way will be re-downloaded every time you re-mirror a\nsite, because Wget can't tell that the local X.html file  corresponds  to  remote  URL  X\n(since  it  doesn't  yet  know  that  the  URL  produces  output  of  type  text/html  or\napplication/xhtml+xml.\n\nAs of version 1.12, Wget will also ensure that any downloaded files of type text/css  end\nin  the  suffix .css, and the option was renamed from --html-extension, to better reflect\nits new behavior. The old option name is still acceptable, but should now  be  considered\ndeprecated.\n\nAs  of  version  1.19.2,  Wget  will  also  ensure  that  any  downloaded  files  with  a\n\"Content-Encoding\" of br, compress, deflate or gzip end in the suffix .br, .Z, .zlib  and\n.gz respectively.\n\nAt  some  point  in  the future, this option may well be expanded to include suffixes for\nother types of content, including content types that are not parsed by Wget.\n\n--http-user=user\n--http-password=password\nSpecify the username user and password password on an HTTP server.  According to the type\nof the challenge, Wget  will  encode  them  using  either  the  \"basic\"  (insecure),  the\n\"digest\", or the Windows \"NTLM\" authentication scheme.\n\nAnother way to specify username and password is in the URL itself.  Either method reveals\nyour  password  to  anyone  who bothers to run \"ps\".  To prevent the passwords from being\nseen, use the --use-askpass or store them in .wgetrc or .netrc, and make sure to  protect\nthose files from other users with \"chmod\".  If the passwords are really important, do not\nleave  them  lying  in those files either---edit the files and delete them after Wget has\nstarted the download.\n",
                    "long": "--adjust-extension"
                },
                {
                    "name": "--no-http-keep-alive",
                    "content": "Turn off the \"keep-alive\" feature for HTTP downloads.  Normally, Wget asks the server  to\nkeep  the connection open so that, when you download more than one document from the same\nserver, they get transferred over the same TCP connection.  This saves time  and  at  the\nsame time reduces the load on the server.\n\nThis  option  is  useful when, for some reason, persistent (keep-alive) connections don't\nwork for you, for example due to a server bug or due  to  the  inability  of  server-side\nscripts to cope with the connections.\n",
                    "long": "--no-http-keep-alive"
                },
                {
                    "name": "--no-cache",
                    "content": "Disable  server-side  cache.   In this case, Wget will send the remote server appropriate\ndirectives (Cache-Control: no-cache and Pragma: no-cache) to get the file from the remote\nservice, rather than  returning  the  cached  version.  This  is  especially  useful  for\nretrieving and flushing out-of-date documents on proxy servers.\n\nCaching is allowed by default.\n",
                    "long": "--no-cache"
                },
                {
                    "name": "--no-cookies",
                    "content": "Disable  the  use of cookies.  Cookies are a mechanism for maintaining server-side state.\nThe server sends the client a cookie  using  the  \"Set-Cookie\"  header,  and  the  client\nresponds  with  the  same  cookie  upon further requests.  Since cookies allow the server\nowners to keep track of visitors  and  for  sites  to  exchange  this  information,  some\nconsider  them  a  breach  of  privacy.   The default is to use cookies; however, storing\ncookies is not on by default.\n\n--load-cookies file\nLoad cookies from file before the first HTTP retrieval.  file is a textual  file  in  the\nformat originally used by Netscape's cookies.txt file.\n\nYou  will  typically use this option when mirroring sites that require that you be logged\nin to access some or all of their content.  The login process typically works by the  web\nserver  issuing an HTTP cookie upon receiving and verifying your credentials.  The cookie\nis then resent by the browser when accessing that part of the site, and  so  proves  your\nidentity.\n\nMirroring  such  a  site  requires  Wget to send the same cookies your browser sends when\ncommunicating with the site.  This is achieved by --load-cookies---simply point  Wget  to\nthe  location  of  the  cookies.txt  file, and it will send the same cookies your browser\nwould send in the same situation.   Different  browsers  keep  textual  cookie  files  in\ndifferent locations:\n\n\"Netscape 4.x.\"\nThe cookies are in ~/.netscape/cookies.txt.\n\n\"Mozilla and Netscape 6.x.\"\nMozilla's  cookie file is also named cookies.txt, located somewhere under ~/.mozilla,\nin the directory of your profile.  The full path usually  ends  up  looking  somewhat\nlike ~/.mozilla/default/some-weird-string/cookies.txt.\n\n\"Internet Explorer.\"\nYou can produce a cookie file Wget can use by using the File menu, Import and Export,\nExport  Cookies.  This has been tested with Internet Explorer 5; it is not guaranteed\nto work with earlier versions.\n\n\"Other browsers.\"\nIf you are using a different browser to create your cookies, --load-cookies will only\nwork if you can locate or produce a cookie file in  the  Netscape  format  that  Wget\nexpects.\n\nIf  you  cannot use --load-cookies, there might still be an alternative.  If your browser\nsupports a \"cookie manager\", you can use it to view the cookies used when  accessing  the\nsite  you're  mirroring.   Write  down  the  name  and  value of the cookie, and manually\ninstruct Wget to send those cookies, bypassing the \"official\" cookie support:\n\nwget --no-cookies --header \"Cookie: <name>=<value>\"\n\n--save-cookies file\nSave cookies to file before exiting.  This will not save cookies  that  have  expired  or\nthat    have   no   expiry   time   (so-called   \"session   cookies\"),   but   also   see\n--keep-session-cookies.\n",
                    "long": "--no-cookies"
                },
                {
                    "name": "--keep-session-cookies",
                    "content": "When specified, causes --save-cookies to also save session cookies.  Session cookies  are\nnormally  not  saved  because  they are meant to be kept in memory and forgotten when you\nexit the browser.  Saving them is useful on sites that require you to log in or to  visit\nthe home page before you can access some pages.  With this option, multiple Wget runs are\nconsidered a single browser session as far as the site is concerned.\n\nSince  the  cookie  file  format does not normally carry session cookies, Wget marks them\nwith an expiry timestamp  of  0.   Wget's  --load-cookies  recognizes  those  as  session\ncookies,  but  it might confuse other browsers.  Also note that cookies so loaded will be\ntreated as other session cookies, which means that if you want --save-cookies to preserve\nthem again, you must use --keep-session-cookies again.\n",
                    "long": "--keep-session-cookies"
                },
                {
                    "name": "--ignore-length",
                    "content": "Unfortunately, some HTTP servers (CGI programs,  to  be  more  precise)  send  out  bogus\n\"Content-Length\" headers, which makes Wget go wild, as it thinks not all the document was\nretrieved.   You  can  spot this syndrome if Wget retries getting the same document again\nand again, each time claiming that the (otherwise normal) connection has  closed  on  the\nvery same byte.\n\nWith this option, Wget will ignore the \"Content-Length\" header---as if it never existed.\n\n--header=header-line\nSend  header-line  along with the rest of the headers in each HTTP request.  The supplied\nheader is sent as-is, which means it must contain name and value separated by colon,  and\nmust not contain newlines.\n\nYou may define more than one additional header by specifying --header more than once.\n\nwget --header='Accept-Charset: iso-8859-2' \\\n--header='Accept-Language: hr'        \\\nhttp://fly.srk.fer.hr/\n\nSpecification of an empty string as the header value will clear all previous user-defined\nheaders.\n\nAs  of  Wget  1.10,  this  option  can  be  used  to override headers otherwise generated\nautomatically.  This example instructs Wget to  connect  to  localhost,  but  to  specify\nfoo.bar in the \"Host\" header:\n\nwget --header=\"Host: foo.bar\" http://localhost/\n\nIn  versions  of  Wget  prior  to  1.10  such use of --header caused sending of duplicate\nheaders.\n\n--compression=type\nChoose the type of compression to be used.  Legal values are auto, gzip and none.\n\nIf auto or gzip are specified, Wget asks the server to compress the file using  the  gzip\ncompression   format.   If   the  server  compresses  the  file  and  responds  with  the\n\"Content-Encoding\"  header  field  set  appropriately,  the  file  will  be  decompressed\nautomatically.\n\nIf  none  is  specified,  wget  will not ask the server to compress the file and will not\ndecompress any server responses. This is the default.\n\nCompression support is currently experimental. In case it is turned on, please report any\nbugs to \"bug-wget@gnu.org\".\n\n--max-redirect=number\nSpecifies the maximum number of redirections to follow for a resource.   The  default  is\n20,  which is usually far more than necessary. However, on those occasions where you want\nto allow more (or fewer), this is the option to use.\n\n--proxy-user=user\n--proxy-password=password\nSpecify the username user and password password for authentication  on  a  proxy  server.\nWget will encode them using the \"basic\" authentication scheme.\n\nSecurity considerations similar to those with --http-password pertain here as well.\n\n--referer=url\nInclude  `Referer:  url'  header  in  HTTP request.  Useful for retrieving documents with\nserver-side processing that assume they are always being  retrieved  by  interactive  web\nbrowsers and only come out properly when Referer is set to one of the pages that point to\nthem.\n",
                    "long": "--ignore-length"
                },
                {
                    "name": "--save-headers",
                    "content": "Save the headers sent by the HTTP server to the file, preceding the actual contents, with\nan empty line as the separator.\n",
                    "long": "--save-headers"
                },
                {
                    "name": "-U _",
                    "content": "--user-agent=agent-string\nIdentify as agent-string to the HTTP server.\n\nThe  HTTP  protocol allows the clients to identify themselves using a \"User-Agent\" header\nfield.  This enables distinguishing the WWW software, usually for statistical purposes or\nfor tracing of protocol violations.  Wget normally identifies  as  Wget/version,  version\nbeing the current version number of Wget.\n\nHowever,  some  sites  have  been  known  to  impose  the  policy of tailoring the output\naccording to the \"User-Agent\"-supplied information.  While this is not such a bad idea in\ntheory, it has  been  abused  by  servers  denying  information  to  clients  other  than\n(historically)  Netscape  or,  more frequently, Microsoft Internet Explorer.  This option\nallows you to change the \"User-Agent\" line  issued  by  Wget.   Use  of  this  option  is\ndiscouraged, unless you really know what you are doing.\n\nSpecifying  empty  user  agent  with  --user-agent=\"\"  instructs  Wget  not  to  send the\n\"User-Agent\" header in HTTP requests.\n\n--post-data=string\n--post-file=file\nUse POST as the method for all HTTP requests and send the specified data in  the  request\nbody.   --post-data sends string as data, whereas --post-file sends the contents of file.\nOther than that, they work in exactly the same  way.  In  particular,  they  both  expect\ncontent   of  the  form  \"key1=value1&key2=value2\",  with  percent-encoding  for  special\ncharacters; the only difference is  that  one  expects  its  content  as  a  command-line\nparameter  and  the  other accepts its content from a file. In particular, --post-file is\nnot for transmitting files as form attachments: those must  appear  as  \"key=value\"  data\n(with  appropriate  percent-coding)  just  like  everything else. Wget does not currently\nsupport     \"multipart/form-data\"     for     transmitting      POST      data;      only\n\"application/x-www-form-urlencoded\".  Only  one  of --post-data and --post-file should be\nspecified.\n\nPlease  note  that  wget  does  not   require   the   content   to   be   of   the   form\n\"key1=value1&key2=value2\",  and  neither  does  it test for it. Wget will simply transmit\nwhatever data is provided to it. Most servers however expect the POST data to be  in  the\nabove format when processing HTML Forms.\n\nWhen  sending  a  POST  request  using  the --post-file option, Wget treats the file as a\nbinary file and will send every character in the POST request without stripping  trailing\nnewline  or  formfeed  characters.  Any other control characters in the text will also be\nsent as-is in the POST request.\n\nPlease be aware that Wget needs to know the size of the POST data in advance.   Therefore\nthe argument to \"--post-file\" must be a regular file; specifying a FIFO or something like\n/dev/stdin  won't work.  It's not quite clear how to work around this limitation inherent\nin HTTP/1.0.  Although HTTP/1.1 introduces chunked transfer that doesn't require  knowing\nthe request length in advance, a client can't use chunked unless it knows it's talking to\nan  HTTP/1.1  server.  And it can't know that until it receives a response, which in turn\nrequires the request to have been completed -- a chicken-and-egg problem.\n\nNote: As of version 1.15 if Wget is redirected after the POST request is  completed,  its\nbehaviour  will  depend  on  the  response code returned by the server.  In case of a 301\nMoved Permanently, 302 Moved  Temporarily  or  307  Temporary  Redirect,  Wget  will,  in\naccordance  with  RFC2616,  continue  to send a POST request.  In case a server wants the\nclient to change the Request method upon redirection, it should  send  a  303  See  Other\nresponse code.\n\nThis  example shows how to log in to a server using POST and then proceed to download the\ndesired pages, presumably only accessible to authorized users:\n\n# Log in to the server.  This can be done only once.\nwget --save-cookies cookies.txt \\\n--post-data 'user=foo&password=bar' \\\nhttp://example.com/auth.php\n\n# Now grab the page or pages we care about.\nwget --load-cookies cookies.txt \\\n-p http://example.com/interesting/article.php\n\nIf the server is using session cookies to track user authentication, the above  will  not\nwork  because  --save-cookies  will  not  save  them  (and neither will browsers) and the\ncookies.txt file will be empty.  In  that  case  use  --keep-session-cookies  along  with\n--save-cookies to force saving of session cookies.\n\n--method=HTTP-Method\nFor  the  purpose of RESTful scripting, Wget allows sending of other HTTP Methods without\nthe need to explicitly set them  using  --header=Header-Line.   Wget  will  use  whatever\nstring is passed to it after --method as the HTTP Method to the server.\n\n--body-data=Data-String\n--body-file=Data-File\nMust  be  set  when  additional data needs to be sent to the server along with the Method\nspecified using --method.  --body-data sends string as data,  whereas  --body-file  sends\nthe contents of file.  Other than that, they work in exactly the same way.\n\nCurrently, --body-file is not for transmitting files as a whole.  Wget does not currently\nsupport        \"multipart/form-data\"        for       transmitting       data;       only\n\"application/x-www-form-urlencoded\". In the future, this may  be  changed  so  that  wget\nsends  the  --body-file as a complete file instead of sending its contents to the server.\nPlease be aware that Wget needs to know the contents of BODY Data in advance,  and  hence\nthe argument to --body-file should be a regular file. See --post-file for a more detailed\nexplanation.  Only one of --body-data and --body-file should be specified.\n\nIf  Wget  is  redirected  after  the  request is completed, Wget will suspend the current\nmethod and send a GET request till the redirection is completed.  This is  true  for  all\nredirection  response  codes  except  307  Temporary Redirect which is used to explicitly\nspecify that the request method should not change.  Another exception is when the  method\nis  set  to  \"POST\",  in which case the redirection rules specified under --post-data are\nfollowed.\n",
                    "flag": "-U"
                },
                {
                    "name": "--content-disposition",
                    "content": "If   this   is   set   to   on,   experimental   (not   fully-functional)   support   for\n\"Content-Disposition\"  headers is enabled. This can currently result in extra round-trips\nto the server for a \"HEAD\" request, and is known to suffer from a few bugs, which is  why\nit is not currently enabled by default.\n\nThis   option   is   useful   for   some   file-downloading   CGI   programs   that   use\n\"Content-Disposition\" headers to describe what the name of a downloaded file should be.\n\nWhen  combined  with  --metalink-over-http  and  --trust-server-names,  a   Content-Type:\napplication/metalink4+xml  file  is named using the \"Content-Disposition\" filename field,\nif available.\n",
                    "long": "--content-disposition"
                },
                {
                    "name": "--content-on-error",
                    "content": "If this is set to on, wget will not skip the content when the server responds with a http\nstatus code that indicates error.\n",
                    "long": "--content-on-error"
                },
                {
                    "name": "--trust-server-names",
                    "content": "If this is set, on a redirect, the local file name will be based on the redirection  URL.\nBy  default  the  local  file  name  is  based on the original URL.  When doing recursive\nretrieving this can be helpful because in many web sites redirected URLs correspond to an\nunderlying file structure, while link URLs do not.\n",
                    "long": "--trust-server-names"
                },
                {
                    "name": "--auth-no-challenge",
                    "content": "If this option is given, Wget will send Basic HTTP authentication information  (plaintext\nusername and password) for all requests, just like Wget 1.10.2 and prior did by default.\n\nUse  of  this option is not recommended, and is intended only to support some few obscure\nservers, which never send HTTP authentication challenges,  but  accept  unsolicited  auth\ninfo, say, in addition to form-based authentication.\n",
                    "long": "--auth-no-challenge"
                },
                {
                    "name": "--retry-on-host-error",
                    "content": "Consider  host  errors,  such  as  \"Temporary  failure in name resolution\", as non-fatal,\ntransient errors.\n\n--retry-on-http-error=code[,code,...]\nConsider given HTTP response codes as  non-fatal,  transient  errors.   Supply  a  comma-\nseparated  list of 3-digit HTTP response codes as argument. Useful to work around special\ncircumstances where retries are required, but the server  responds  with  an  error  code\nnormally not retried by Wget. Such errors might be 503 (Service Unavailable) and 429 (Too\nMany  Requests). Retries enabled by this option are performed subject to the normal retry\ntiming and retry count limitations of Wget.\n\nUsing this option is intended to support special use cases  only  and  is  generally  not\nrecommended, as it can force retries even in cases where the server is actually trying to\ndecrease its load. Please use wisely and only if you know what you are doing.\n",
                    "long": "--retry-on-host-error"
                },
                {
                    "name": "HTTPS (SSL/TLS) Options",
                    "content": "To  support  encrypted  HTTP  (HTTPS)  downloads,  Wget must be compiled with an external SSL\nlibrary. The current default is GnuTLS.  In addition, Wget also supports  HSTS  (HTTP  Strict\nTransport  Security).   If  Wget  is  compiled without SSL support, none of these options are\navailable.\n\n--secure-protocol=protocol\nChoose the secure protocol to be used.  Legal  values  are  auto,  SSLv2,  SSLv3,  TLSv1,\nTLSv11, TLSv12, TLSv13 and PFS.  If auto is used, the SSL library is given the liberty\nof  choosing the appropriate protocol automatically, which is achieved by sending a TLSv1\ngreeting. This is the default.\n\nSpecifying SSLv2, SSLv3, TLSv1, TLSv11,  TLSv12  or  TLSv13  forces  the  use  of  the\ncorresponding  protocol.   This  is  useful  when  talking  to  old  and buggy SSL server\nimplementations that make it hard for the underlying SSL library to  choose  the  correct\nprotocol version.  Fortunately, such servers are quite rare.\n\nSpecifying  PFS enforces the use of the so-called Perfect Forward Security cipher suites.\nIn short, PFS adds security by creating a one-time key for each SSL connection. It has  a\nbit  more  CPU  impact  on client and server.  We use known to be secure ciphers (e.g. no\nMD4) and the TLS protocol. This  mode  also  explicitly  excludes  non-PFS  key  exchange\nmethods, such as RSA.\n"
                },
                {
                    "name": "--https-only",
                    "content": "When in recursive mode, only HTTPS links are followed.\n",
                    "long": "--https-only"
                },
                {
                    "name": "--ciphers",
                    "content": "Set  the  cipher  list  string.  Typically  this  string sets the cipher suites and other\nSSL/TLS options that the user wish should be used, in a set order of  preference  (GnuTLS\ncalls  it  'priority  string').  This  string  will be fed verbatim to the SSL/TLS engine\n(OpenSSL or GnuTLS) and hence its format and syntax is dependent on that. Wget  will  not\nprocess  or  manipulate  it  in any way. Refer to the OpenSSL or GnuTLS documentation for\nmore information.\n",
                    "long": "--ciphers"
                },
                {
                    "name": "--no-check-certificate",
                    "content": "Don't check the server certificate against the available certificate  authorities.   Also\ndon't require the URL host name to match the common name presented by the certificate.\n\nAs of Wget 1.10, the default is to verify the server's certificate against the recognized\ncertificate  authorities,  breaking  the  SSL  handshake and aborting the download if the\nverification fails.   Although  this  provides  more  secure  downloads,  it  does  break\ninteroperability  with  some  sites that worked with previous Wget versions, particularly\nthose using self-signed, expired, or otherwise invalid certificates.  This option  forces\nan  \"insecure\"  mode  of  operation  that  turns the certificate verification errors into\nwarnings and allows you to proceed.\n\nIf you encounter \"certificate verification\" errors  or  ones  saying  that  \"common  name\ndoesn't  match  requested  host name\", you can use this option to bypass the verification\nand proceed with the download.  Only use this option if you are  otherwise  convinced  of\nthe  site's  authenticity,  or  if  you  really  don't  care  about  the  validity of its\ncertificate.  It is almost  always  a  bad  idea  not  to  check  the  certificates  when\ntransmitting  confidential or important data.  For self-signed/internal certificates, you\nshould download the certificate and verify against that instead of forcing this  insecure\nmode.   If  you  are  really  sure  of not desiring any certificate verification, you can\nspecify --check-certificate=quiet to tell wget to not print  any  warning  about  invalid\ncertificates, albeit in most cases this is the wrong thing to do.\n\n--certificate=file\nUse  the  client  certificate  stored  in  file.   This  is  needed  for servers that are\nconfigured to require certificates from the clients that connect  to  them.   Normally  a\ncertificate is not required and this switch is optional.\n\n--certificate-type=type\nSpecify  the  type  of the client certificate.  Legal values are PEM (assumed by default)\nand DER, also known as ASN1.\n\n--private-key=file\nRead the private key from file.  This allows you to provide the private  key  in  a  file\nseparate from the certificate.\n\n--private-key-type=type\nSpecify the type of the private key.  Accepted values are PEM (the default) and DER.\n\n--ca-certificate=file\nUse  file  as  the  file  with the bundle of certificate authorities (\"CA\") to verify the\npeers.  The certificates must be in PEM format.\n\nWithout this option Wget looks for CA certificates  at  the  system-specified  locations,\nchosen at OpenSSL installation time.\n\n--ca-directory=directory\nSpecifies  directory containing CA certificates in PEM format.  Each file contains one CA\ncertificate, and the file name is based on a hash value  derived  from  the  certificate.\nThis  is  achieved  by  processing  a  certificate  directory with the \"crehash\" utility\nsupplied with OpenSSL.  Using --ca-directory is more efficient than --ca-certificate when\nmany certificates are installed because it allows Wget to fetch certificates on demand.\n\nWithout this option Wget looks for CA certificates  at  the  system-specified  locations,\nchosen at OpenSSL installation time.\n\n--crl-file=file\nSpecifies  a  CRL file in file.  This is needed for certificates that have been revocated\nby the CAs.\n",
                    "long": "--no-check-certificate"
                },
                {
                    "name": "--pinnedpubkey=file/hashes",
                    "content": "Tells wget to use the specified public key file (or hashes) to verify the peer.  This can\nbe a path to a file which contains a single public key in  PEM  or  DER  format,  or  any\nnumber of base64 encoded sha256 hashes preceded by \"sha256//\" and separated by \";\"\n\nWhen  negotiating  a TLS or SSL connection, the server sends a certificate indicating its\nidentity. A public key is extracted from this certificate and  if  it  does  not  exactly\nmatch  the  public  key(s) provided to this option, wget will abort the connection before\nsending or receiving any data.\n\n--random-file=file\n[OpenSSL and LibreSSL only] Use file as the source of random data for seeding the pseudo-\nrandom number generator on systems without /dev/urandom.\n\nOn such systems the SSL library needs an external source  of  randomness  to  initialize.\nRandomness  may be provided by EGD (see --egd-file below) or read from an external source\nspecified by the user.  If this option is not specified, Wget looks for  random  data  in\n$RANDFILE or, if that is unset, in $HOME/.rnd.\n\nIf  you're  getting  the \"Could not seed OpenSSL PRNG; disabling SSL.\"  error, you should\nprovide random data using some of the methods described above.\n\n--egd-file=file\n[OpenSSL only] Use file as the EGD socket.  EGD stands for Entropy  Gathering  Daemon,  a\nuser-space program that collects data from various unpredictable system sources and makes\nit  available to other programs that might need it.  Encryption software, such as the SSL\nlibrary, needs sources of non-repeating randomness to seed the  random  number  generator\nused to produce cryptographically strong keys.\n\nOpenSSL  allows  the  user  to  specify  his  own source of entropy using the \"RANDFILE\"\nenvironment variable.  If this variable is unset, or  if  the  specified  file  does  not\nproduce  enough randomness, OpenSSL will read random data from EGD socket specified using\nthis option.\n\nIf this option is not specified (and the equivalent startup command is not used), EGD  is\nnever contacted.  EGD is not needed on modern Unix systems that support /dev/urandom.\n",
                    "long": "--pinnedpubkey",
                    "arg": "file/hashes"
                },
                {
                    "name": "--no-hsts",
                    "content": "Wget  supports HSTS (HTTP Strict Transport Security, RFC 6797) by default.  Use --no-hsts\nto make Wget act as a non-HSTS-compliant UA. As a consequence, Wget would ignore all  the\n\"Strict-Transport-Security\" headers, and would not enforce any existing HSTS policy.\n\n--hsts-file=file\nBy  default,  Wget  stores its HSTS database in ~/.wget-hsts.  You can use --hsts-file to\noverride this. Wget will use the supplied file as  the  HSTS  database.  Such  file  must\nconform  to  the  correct  HSTS  database  format  used by Wget. If Wget cannot parse the\nprovided file, the behaviour is unspecified.\n\nThe Wget's HSTS database is a plain text file. Each line contains an HSTS  entry  (ie.  a\nsite  that  has  issued  a  \"Strict-Transport-Security\"  header  and  that  therefore has\nspecified a concrete HSTS policy to be applied). Lines starting with  a  dash  (\"#\")  are\nignored  by  Wget.  Please  note that in spite of this convenient human-readability hand-\nhacking the HSTS database is generally not a good idea.\n\nAn HSTS entry line consists of several fields separated by one or more whitespace:\n\n\"<hostname> SP [<port>] SP <include subdomains> SP <created> SP <max-age>\"\n\nThe hostname and port fields indicate the hostname and  port  to  which  the  given  HSTS\npolicy applies. The port field may be zero, and it will, in most of the cases. That means\nthat  the  port  number  will  not  be taken into account when deciding whether such HSTS\npolicy should be applied on a given request (only the hostname will be  evaluated).  When\nport  is  different  to zero, both the target hostname and the port will be evaluated and\nthe HSTS policy will only be applied if  both  of  them  match.  This  feature  has  been\nincluded for testing/development purposes only.  The Wget testsuite (in testenv/) creates\nHSTS databases with explicit ports with the purpose of ensuring Wget's correct behaviour.\nApplying  HSTS  policies  to ports other than the default ones is discouraged by RFC 6797\n(see Appendix B \"Differences between HSTS Policy and  Same-Origin  Policy\").  Thus,  this\nfunctionality  should  not  be used in production environments and port will typically be\nzero. The last three fields do what they are expected to.  The  field  includesubdomains\ncan either be 1 or 0 and it signals whether the subdomains of the target domain should be\npart  of the given HSTS policy as well. The created and max-age fields hold the timestamp\nvalues of when such entry was created (first seen by Wget)  and  the  HSTS-defined  value\n'max-age',  which  states  how  long  should  that HSTS policy remain active, measured in\nseconds elapsed since the timestamp stored in created. Once that time  has  passed,  that\nHSTS policy will no longer be valid and will eventually be removed from the database.\n\nIf  you  supply your own HSTS database via --hsts-file, be aware that Wget may modify the\nprovided file if any change occurs between the HSTS  policies  requested  by  the  remote\nservers  and those in the file. When Wget exits, it effectively updates the HSTS database\nby rewriting the database file with the new entries.\n\nIf the supplied file does not exist, Wget will create one. This file will contain the new\nHSTS entries. If no HSTS entries were generated (no  \"Strict-Transport-Security\"  headers\nwere  sent  by  any  of the servers) then no file will be created, not even an empty one.\nThis behaviour applies to the default database file (~/.wget-hsts) as well: it  will  not\nbe created until some server enforces an HSTS policy.\n\nCare  is  taken not to override possible changes made by other Wget processes at the same\ntime over the HSTS database. Before dumping the updated HSTS entries on  the  file,  Wget\nwill re-read it and merge the changes.\n\nUsing  a  custom HSTS database and/or modifying an existing one is discouraged.  For more\ninformation about the potential security threats arose from such practice, see section 14\n\"Security Considerations\" of RFC 6797, specially section 14.9 \"Creative  Manipulation  of\nHSTS Policy Store\".\n\n--warc-file=file\nUse file as the destination WARC file.\n\n--warc-header=string\nUse string into as the warcinfo record.\n\n--warc-max-size=size\nSet the maximum size of the WARC files to size.\n",
                    "long": "--no-hsts"
                },
                {
                    "name": "--warc-cdx",
                    "content": "Write CDX index files.\n\n--warc-dedup=file\nDo not store records listed in this CDX file.\n",
                    "long": "--warc-cdx"
                },
                {
                    "name": "--no-warc-compression",
                    "content": "Do not compress WARC files with GZIP.\n",
                    "long": "--no-warc-compression"
                },
                {
                    "name": "--no-warc-digests",
                    "content": "Do not calculate SHA1 digests.\n",
                    "long": "--no-warc-digests"
                },
                {
                    "name": "--no-warc-keep-log",
                    "content": "Do not store the log file in a WARC record.\n\n--warc-tempdir=dir\nSpecify the location for temporary files created by the WARC writer.\n",
                    "long": "--no-warc-keep-log"
                },
                {
                    "name": "FTP Options",
                    "content": "--ftp-user=user\n--ftp-password=password\nSpecify  the  username user and password password on an FTP server.  Without this, or the\ncorresponding startup  option,  the  password  defaults  to  -wget@,  normally  used  for\nanonymous FTP.\n\nAnother way to specify username and password is in the URL itself.  Either method reveals\nyour  password  to  anyone  who bothers to run \"ps\".  To prevent the passwords from being\nseen, store them in .wgetrc or .netrc, and make sure to protect those  files  from  other\nusers  with  \"chmod\".   If the passwords are really important, do not leave them lying in\nthose files either---edit the files and delete them after Wget has started the download.\n"
                },
                {
                    "name": "--no-remove-listing",
                    "content": "Don't remove the temporary .listing files generated by FTP retrievals.   Normally,  these\nfiles  contain  the  raw directory listings received from FTP servers.  Not removing them\ncan be useful for debugging purposes, or when you want to be able to easily check on  the\ncontents  of  remote  server  directories (e.g. to verify that a mirror you're running is\ncomplete).\n\nNote that even though Wget writes to a known filename  for  this  file,  this  is  not  a\nsecurity hole in the scenario of a user making .listing a symbolic link to /etc/passwd or\nsomething  and  asking  \"root\"  to  run  Wget  in his or her directory.  Depending on the\noptions  used,  either  Wget   will   refuse   to   write   to   .listing,   making   the\nglobbing/recursion/time-stamping operation fail, or the symbolic link will be deleted and\nreplaced   with  the  actual  .listing  file,  or  the  listing  will  be  written  to  a\n.listing.number file.\n\nEven though this situation isn't a problem, though, \"root\" should never  run  Wget  in  a\nnon-trusted  user's directory.  A user could do something as simple as linking index.html\nto /etc/passwd and asking \"root\" to  run  Wget  with  -N  or  -r  so  the  file  will  be\noverwritten.\n",
                    "long": "--no-remove-listing"
                },
                {
                    "name": "--no-glob",
                    "content": "Turn  off  FTP  globbing.   Globbing  refers  to the use of shell-like special characters\n(wildcards), like *, ?, [ and ] to retrieve more than one file from the same directory at\nonce, like:\n\nwget ftp://gnjilux.srk.fer.hr/*.msg\n\nBy default, globbing will be turned on if the URL contains a  globbing  character.   This\noption may be used to turn globbing on or off permanently.\n\nYou  may have to quote the URL to protect it from being expanded by your shell.  Globbing\nmakes Wget look for a directory listing,  which  is  system-specific.   This  is  why  it\ncurrently works only with Unix FTP servers (and the ones emulating Unix \"ls\" output).\n",
                    "long": "--no-glob"
                },
                {
                    "name": "--no-passive-ftp",
                    "content": "Disable  the  use of the passive FTP transfer mode.  Passive FTP mandates that the client\nconnect to the server to establish the data connection rather than the other way around.\n\nIf the machine is connected to the Internet directly, both passive and active FTP  should\nwork  equally well.  Behind most firewall and NAT configurations passive FTP has a better\nchance of working.  However, in some rare firewall configurations,  active  FTP  actually\nworks  when passive FTP doesn't.  If you suspect this to be the case, use this option, or\nset \"passiveftp=off\" in your init file.\n",
                    "long": "--no-passive-ftp"
                },
                {
                    "name": "--preserve-permissions",
                    "content": "Preserve remote file permissions instead of permissions set by umask.\n",
                    "long": "--preserve-permissions"
                },
                {
                    "name": "--retr-symlinks",
                    "content": "By  default,  when  retrieving  FTP  directories  recursively  and  a  symbolic  link  is\nencountered,  the  symbolic  link  is  traversed  and the pointed-to files are retrieved.\nCurrently, Wget does  not  traverse  symbolic  links  to  directories  to  download  them\nrecursively, though this feature may be added in the future.\n\nWhen  --retr-symlinks=no  is specified, the linked-to file is not downloaded.  Instead, a\nmatching symbolic link is created on the local file system.  The pointed-to file will not\nbe retrieved unless this recursive retrieval would have  encountered  it  separately  and\ndownloaded it anyway.  This option poses a security risk where a malicious FTP Server may\ncause  Wget  to  write  to  files outside of the intended directories through a specially\ncrafted .LISTING file.\n\nNote that when retrieving a file (not a  directory)  because  it  was  specified  on  the\ncommand-line,  rather  than  because  it  was  recursed  to,  this  option has no effect.\nSymbolic links are always traversed in this case.\n",
                    "long": "--retr-symlinks"
                },
                {
                    "name": "FTPS Options",
                    "content": ""
                },
                {
                    "name": "--ftps-implicit",
                    "content": "This option tells Wget to use FTPS implicitly. Implicit  FTPS  consists  of  initializing\nSSL/TLS  from  the very beginning of the control connection. This option does not send an\n\"AUTH TLS\" command: it assumes the server speaks FTPS  and  directly  starts  an  SSL/TLS\nconnection.  If  the  attempt is successful, the session continues just like regular FTPS\n(\"PBSZ\" and \"PROT\" are sent, etc.).  Implicit FTPS is no longer a  requirement  for  FTPS\nimplementations,  and  thus many servers may not support it. If --ftps-implicit is passed\nand no explicit port number specified, the default port for implicit FTPS, 990,  will  be\nused,  instead  of the default port for the \"normal\" (explicit) FTPS which is the same as\nthat of FTP, 21.\n",
                    "long": "--ftps-implicit"
                },
                {
                    "name": "--no-ftps-resume-ssl",
                    "content": "Do not resume the SSL/TLS session in the data channel. When starting a  data  connection,\nWget  tries  to  resume the SSL/TLS session previously started in the control connection.\nSSL/TLS session resumption avoids performing an entirely new  handshake  by  reusing  the\nSSL/TLS  parameters  of a previous session. Typically, the FTPS servers want it that way,\nso Wget does this by default. Under rare circumstances however, one might want  to  start\nan   entirely   new   SSL/TLS   session   in   every   data  connection.   This  is  what\n--no-ftps-resume-ssl is for.\n",
                    "long": "--no-ftps-resume-ssl"
                },
                {
                    "name": "--ftps-clear-data-connection",
                    "content": "All the data connections will be in plain text. Only the control connection will be under\nSSL/TLS. Wget will send a \"PROT C\" command to achieve this, which must be approved by the\nserver.\n",
                    "long": "--ftps-clear-data-connection"
                },
                {
                    "name": "--ftps-fallback-to-ftp",
                    "content": "Fall back to FTP if FTPS is not supported by the target  server.  For  security  reasons,\nthis  option  is not asserted by default. The default behaviour is to exit with an error.\nIf a server does not successfully reply to the initial \"AUTH TLS\" command, or in the case\nof implicit FTPS, if the initial SSL/TLS connection attempt is rejected, it is considered\nthat such server does not support FTPS.\n",
                    "long": "--ftps-fallback-to-ftp"
                },
                {
                    "name": "Recursive Retrieval Options",
                    "content": ""
                },
                {
                    "name": "-r",
                    "content": "",
                    "flag": "-r"
                },
                {
                    "name": "--recursive",
                    "content": "Turn on recursive retrieving.    The default maximum depth is 5.\n",
                    "long": "--recursive"
                },
                {
                    "name": "-l _",
                    "content": "--level=depth\nSet the maximum number of subdirectories that Wget will recurse into to depth.  In  order\nto  prevent  one  from  accidentally downloading very large websites when using recursion\nthis is limited to a depth of 5 by default, i.e., it will traverse at most 5  directories\ndeep starting from the provided URL.  Set -l 0 or -l inf for infinite recursion depth.\n\nwget -r -l 0 http://<site>/1.html\n\nIdeally,  one  would  expect this to download just 1.html.  but unfortunately this is not\nthe case, because -l 0 is  equivalent  to  -l  inf---that  is,  infinite  recursion.   To\ndownload  a single HTML page (or a handful of them), specify them all on the command line\nand leave away -r and -l. To download the essential items to view a single HTML page, see\npage requisites.\n",
                    "flag": "-l"
                },
                {
                    "name": "--delete-after",
                    "content": "This option tells Wget to delete every single file it downloads, after  having  done  so.\nIt is useful for pre-fetching popular pages through a proxy, e.g.:\n\nwget -r -nd --delete-after http://whatever.com/~popular/page/\n\nThe -r option is to retrieve recursively, and -nd to not create directories.\n\nNote  that --delete-after deletes files on the local machine.  It does not issue the DELE\ncommand to remote FTP sites,  for  instance.   Also  note  that  when  --delete-after  is\nspecified, --convert-links is ignored, so .orig files are simply not created in the first\nplace.\n",
                    "long": "--delete-after"
                },
                {
                    "name": "-k",
                    "content": "",
                    "flag": "-k"
                },
                {
                    "name": "--convert-links",
                    "content": "After  the  download is complete, convert the links in the document to make them suitable\nfor local viewing.  This affects not only the visible hyperlinks, but  any  part  of  the\ndocument  that links to external content, such as embedded images, links to style sheets,\nhyperlinks to non-HTML content, etc.\n\nEach link will be changed in one of the two ways:\n\n•   The links to files that have been downloaded by Wget will be changed to refer to  the\nfile they point to as a relative link.\n\nExample: if the downloaded file /foo/doc.html links to /bar/img.gif, also downloaded,\nthen  the link in doc.html will be modified to point to ../bar/img.gif.  This kind of\ntransformation works reliably for arbitrary combinations of directories.\n\n•   The links to files that have not been downloaded by Wget will be changed  to  include\nhost name and absolute path of the location they point to.\n\nExample:   if  the  downloaded  file  /foo/doc.html  links  to  /bar/img.gif  (or  to\n../bar/img.gif),  then  the  link  in  doc.html  will  be  modified   to   point   to\nhttp://hostname/bar/img.gif.\n\nBecause of this, local browsing works reliably: if a linked file was downloaded, the link\nwill  refer  to its local name; if it was not downloaded, the link will refer to its full\nInternet address rather than presenting a broken link.  The fact that  the  former  links\nare  converted  to  relative  links ensures that you can move the downloaded hierarchy to\nanother directory.\n\nNote that only at the end of the download can Wget know which links have been downloaded.\nBecause of that, the work done by -k will be performed at the end of all the downloads.\n",
                    "long": "--convert-links"
                },
                {
                    "name": "--convert-file-only",
                    "content": "This option converts only the filename part of the URLs, leaving the  rest  of  the  URLs\nuntouched.  This  filename  part  is sometimes referred to as the \"basename\", although we\navoid that term here in order not to cause confusion.\n\nIt works particularly well in conjunction with --adjust-extension, although this coupling\nis not enforced. It proves useful to populate Internet caches with files downloaded  from\ndifferent hosts.\n\nExample:  if  some  link points to //foo.com/bar.cgi?xyz with --adjust-extension asserted\nand its local destination is intended to  be  ./foo.com/bar.cgi?xyz.css,  then  the  link\nwould  be  converted  to  //foo.com/bar.cgi?xyz.css. Note that only the filename part has\nbeen modified. The rest of the URL has been left untouched, including the net path (\"//\")\nwhich would otherwise be processed by Wget and converted to  the  effective  scheme  (ie.\n\"http://\").\n",
                    "long": "--convert-file-only"
                },
                {
                    "name": "-K",
                    "content": "",
                    "flag": "-K"
                },
                {
                    "name": "--backup-converted",
                    "content": "When  converting  a  file, back up the original version with a .orig suffix.  Affects the\nbehavior of -N.\n",
                    "long": "--backup-converted"
                },
                {
                    "name": "-m",
                    "content": "",
                    "flag": "-m"
                },
                {
                    "name": "--mirror",
                    "content": "Turn on options suitable for  mirroring.   This  option  turns  on  recursion  and  time-\nstamping,  sets  infinite  recursion  depth  and  keeps  FTP  directory  listings.  It is\ncurrently equivalent to -r -N -l inf --no-remove-listing.\n",
                    "long": "--mirror"
                },
                {
                    "name": "-p",
                    "content": "",
                    "flag": "-p"
                },
                {
                    "name": "--page-requisites",
                    "content": "This option causes Wget to download all the files that are necessary to properly  display\na  given  HTML page.  This includes such things as inlined images, sounds, and referenced\nstylesheets.\n\nOrdinarily, when downloading a single HTML page, any  requisite  documents  that  may  be\nneeded  to  display  it properly are not downloaded.  Using -r together with -l can help,\nbut since Wget does not ordinarily distinguish between external  and  inlined  documents,\none is generally left with \"leaf documents\" that are missing their requisites.\n\nFor  instance, say document 1.html contains an \"<IMG>\" tag referencing 1.gif and an \"<A>\"\ntag pointing to external document 2.html.  Say that 2.html is similar but that its  image\nis 2.gif and it links to 3.html.  Say this continues up to some arbitrarily high number.\n\nIf one executes the command:\n\nwget -r -l 2 http://<site>/1.html\n\nthen 1.html, 1.gif, 2.html, 2.gif, and 3.html will be downloaded.  As you can see, 3.html\nis  without its requisite 3.gif because Wget is simply counting the number of hops (up to\n2) away from 1.html in order to determine where to stop  the  recursion.   However,  with\nthis command:\n\nwget -r -l 2 -p http://<site>/1.html\n\nall the above files and 3.html's requisite 3.gif will be downloaded.  Similarly,\n\nwget -r -l 1 -p http://<site>/1.html\n\nwill cause 1.html, 1.gif, 2.html, and 2.gif to be downloaded.  One might think that:\n\nwget -r -l 0 -p http://<site>/1.html\n\nwould  download just 1.html and 1.gif, but unfortunately this is not the case, because -l\n0 is equivalent to -l inf---that is, infinite recursion.  To download a single HTML  page\n(or  a  handful of them, all specified on the command-line or in a -i URL input file) and\nits (or their) requisites, simply leave off -r and -l:\n\nwget -p http://<site>/1.html\n\nNote that Wget will behave as if -r had been specified, but only that single page and its\nrequisites will be downloaded.  Links from that page to external documents  will  not  be\nfollowed.  Actually, to download a single page and all its requisites (even if they exist\non separate websites), and make sure the lot displays properly locally, this author likes\nto use a few options in addition to -p:\n\nwget -E -H -k -K -p http://<site>/<document>\n\nTo  finish  off  this  topic, it's worth knowing that Wget's idea of an external document\nlink is any URL specified in an \"<A>\" tag, an \"<AREA>\" tag, or a \"<LINK>\" tag other  than\n\"<LINK REL=\"stylesheet\">\".\n",
                    "long": "--page-requisites"
                },
                {
                    "name": "--strict-comments",
                    "content": "Turn  on  strict  parsing  of HTML comments.  The default is to terminate comments at the\nfirst occurrence of -->.\n\nAccording  to  specifications,  HTML  comments  are  expressed  as   SGML   declarations.\nDeclaration  is  special  markup  that  begins with <! and ends with >, such as <!DOCTYPE\n...>, that may contain comments between a pair  of  --  delimiters.   HTML  comments  are\n\"empty  declarations\",  SGML  declarations  without  any  non-comment  text.   Therefore,\n<!--foo--> is a valid comment, and so is <!--one-- --two-->, but <!--1--2--> is not.\n\nOn the other hand, most HTML writers don't perceive comments as anything other than  text\ndelimited  with  <!--  and -->, which is not quite the same.  For example, something like\n<!------------> works as a valid comment as long as the number of dashes is a multiple of\nfour (!).  If not, the comment technically lasts until the next --, which may be  at  the\nother  end of the document.  Because of this, many popular browsers completely ignore the\nspecification and implement what users have come to expect: comments delimited with  <!--\nand -->.\n\nUntil version 1.9, Wget interpreted comments strictly, which resulted in missing links in\nmany web pages that displayed fine in browsers, but had the misfortune of containing non-\ncompliant  comments.   Beginning  with  version 1.9, Wget has joined the ranks of clients\nthat implements \"naive\" comments, terminating each comment at  the  first  occurrence  of\n-->.\n\nIf, for whatever reason, you want strict comment parsing, use this option to turn it on.\n",
                    "long": "--strict-comments"
                },
                {
                    "name": "Recursive Accept/Reject Options",
                    "content": ""
                },
                {
                    "name": "-A _ --accept _",
                    "content": "",
                    "flag": "-A",
                    "long": "--accept"
                },
                {
                    "name": "-R _ --reject _",
                    "content": "Specify comma-separated lists of file name suffixes or patterns to accept or reject. Note\nthat  if any of the wildcard characters, *, ?, [ or ], appear in an element of acclist or\nrejlist, it will be treated as a pattern, rather than a suffix.  In this case,  you  have\nto  enclose  the  pattern into quotes to prevent your shell from expanding it, like in -A\n\"*.mp3\" or -A '*.mp3'.\n\n--accept-regex urlregex\n--reject-regex urlregex\nSpecify a regular expression to accept or reject the complete URL.\n\n--regex-type regextype\nSpecify the regular expression type.  Possible types are posix or pcre.  Note that to  be\nable to use pcre type, wget has to be compiled with libpcre support.\n",
                    "flag": "-R",
                    "long": "--reject"
                },
                {
                    "name": "-D _",
                    "content": "--domains=domain-list\nSet domains to be followed.  domain-list is a comma-separated list of domains.  Note that\nit does not turn on -H.\n\n--exclude-domains domain-list\nSpecify the domains that are not to be followed.\n",
                    "flag": "-D"
                },
                {
                    "name": "--follow-ftp",
                    "content": "Follow  FTP links from HTML documents.  Without this option, Wget will ignore all the FTP\nlinks.\n\n--follow-tags=list\nWget has an internal table of HTML tag / attribute pairs that it considers  when  looking\nfor  linked  documents  during  a  recursive retrieval.  If a user wants only a subset of\nthose tags to be considered, however, he or she should be specify such tags in  a  comma-\nseparated list with this option.\n\n--ignore-tags=list\nThis  is  the  opposite  of  the  --follow-tags  option.   To skip certain HTML tags when\nrecursively looking for documents to download, specify them in a comma-separated list.\n\nIn the past, this option was  the  best  bet  for  downloading  a  single  page  and  its\nrequisites, using a command-line like:\n\nwget --ignore-tags=a,area -H -k -K -r http://<site>/<document>\n\nHowever,  the  author  of this option came across a page with tags like \"<LINK REL=\"home\"\nHREF=\"/\">\" and came to the realization that specifying tags to  ignore  was  not  enough.\nOne  can't  just  tell  Wget  to  ignore  \"<LINK>\",  because then stylesheets will not be\ndownloaded.  Now the best bet for downloading a single page and  its  requisites  is  the\ndedicated --page-requisites option.\n",
                    "long": "--follow-ftp"
                },
                {
                    "name": "--ignore-case",
                    "content": "Ignore case when matching files and directories.  This influences the behavior of -R, -A,\n-I, and -X options, as well as globbing implemented when downloading from FTP sites.  For\nexample,  with  this  option,  -A  \"*.txt\"  will  match  file1.txt,  but  also file2.TXT,\nfile3.TxT, and so on.  The quotes in the example are to prevent the shell from  expanding\nthe pattern.\n",
                    "long": "--ignore-case"
                },
                {
                    "name": "-H",
                    "content": "",
                    "flag": "-H"
                },
                {
                    "name": "--span-hosts",
                    "content": "Enable spanning across hosts when doing recursive retrieving.\n",
                    "long": "--span-hosts"
                },
                {
                    "name": "-L",
                    "content": "",
                    "flag": "-L"
                },
                {
                    "name": "--relative",
                    "content": "Follow  relative  links  only.   Useful  for  retrieving a specific home page without any\ndistractions, not even those from the same hosts.\n",
                    "long": "--relative"
                },
                {
                    "name": "-I _",
                    "content": "--include-directories=list\nSpecify a comma-separated list of  directories  you  wish  to  follow  when  downloading.\nElements of list may contain wildcards.\n",
                    "flag": "-I"
                },
                {
                    "name": "-X _",
                    "content": "--exclude-directories=list\nSpecify  a  comma-separated  list  of  directories  you  wish  to  exclude from download.\nElements of list may contain wildcards.\n",
                    "flag": "-X"
                },
                {
                    "name": "-np",
                    "content": ""
                },
                {
                    "name": "--no-parent",
                    "content": "Do not ever ascend to the parent directory when retrieving recursively.  This is a useful\noption, since it guarantees that only  the  files  below  a  certain  hierarchy  will  be\ndownloaded.\n",
                    "long": "--no-parent"
                }
            ]
        },
        "ENVIRONMENT": {
            "content": "Wget  supports  proxies  for both HTTP and FTP retrievals.  The standard way to specify proxy\nlocation, which Wget recognizes, is using the following environment variables:\n",
            "subsections": [
                {
                    "name": "http_proxy",
                    "content": ""
                },
                {
                    "name": "https_proxy",
                    "content": "If set, the httpproxy and httpsproxy variables should contain the URLs of  the  proxies\nfor HTTP and HTTPS connections respectively.\n"
                },
                {
                    "name": "ftp_proxy",
                    "content": "This  variable  should  contain  the  URL  of the proxy for FTP connections.  It is quite\ncommon that httpproxy and ftpproxy are set to the same URL.\n"
                },
                {
                    "name": "no_proxy",
                    "content": "This variable should contain a comma-separated list of domain extensions proxy should not\nbe used for.  For instance, if the value of noproxy is .mit.edu, proxy will not be  used\nto retrieve documents from MIT.\n"
                }
            ]
        },
        "EXIT STATUS": {
            "content": "Wget may return one of several error codes if it encounters problems.\n\n0   No problems occurred.\n\n1   Generic error code.\n\n2   Parse error---for instance, when parsing command-line options, the .wgetrc or .netrc...\n\n3   File I/O error.\n\n4   Network failure.\n\n5   SSL verification failure.\n\n6   Username/password authentication failure.\n\n7   Protocol errors.\n\n8   Server issued an error response.\n\nWith  the  exceptions  of 0 and 1, the lower-numbered exit codes take precedence over higher-\nnumbered ones, when multiple types of errors are encountered.\n\nIn versions  of  Wget  prior  to  1.12,  Wget's  exit  status  tended  to  be  unhelpful  and\ninconsistent.  Recursive  downloads  would virtually always return 0 (success), regardless of\nany issues encountered, and non-recursive fetches only returned the status  corresponding  to\nthe most recently-attempted download.\n",
            "subsections": []
        },
        "FILES": {
            "content": "",
            "subsections": [
                {
                    "name": "/etc/wgetrc",
                    "content": "Default location of the global startup file.\n"
                },
                {
                    "name": ".wgetrc",
                    "content": "User startup file.\n"
                }
            ]
        },
        "BUGS": {
            "content": "You   are   welcome   to   submit   bug   reports   via   the   GNU  Wget  bug  tracker  (see\n<https://savannah.gnu.org/bugs/?func=additem&group=wget>)   or   to    our    mailing    list\n<bug-wget@gnu.org>.\n\nVisit  <https://lists.gnu.org/mailman/listinfo/bug-wget>  to get more info (how to subscribe,\nlist archives, ...).\n\nBefore actually submitting a bug report, please try to follow a few simple guidelines.\n\n1.  Please try to ascertain that the behavior you see really is a bug.  If Wget crashes, it's\na bug.  If Wget does not behave as documented, it's a bug.  If things work  strange,  but\nyou are not sure about the way they are supposed to work, it might well be a bug, but you\nmight want to double-check the documentation and the mailing lists.\n\n2.  Try to repeat the bug in as simple circumstances as possible.  E.g. if Wget crashes while\ndownloading  wget -rl0 -kKE -t5 --no-proxy http://example.com -o /tmp/log, you should try\nto see if the crash is repeatable, and if will occur with a simpler set of options.   You\nmight  even try to start the download at the page where the crash occurred to see if that\npage somehow triggered the crash.\n\nAlso, while I will probably be interested to know the contents of your .wgetrc file, just\ndumping it into the debug message is probably a bad idea.  Instead, you should first  try\nto  see  if the bug repeats with .wgetrc moved out of the way.  Only if it turns out that\n.wgetrc settings affect the bug, mail me the relevant parts of the file.\n\n3.  Please start Wget with -d option and send us the  resulting  output  (or  relevant  parts\nthereof).   If  Wget was compiled without debug support, recompile it---it is much easier\nto trace bugs with debug support on.\n\nNote: please make sure to remove any potentially sensitive information from the debug log\nbefore sending it to the bug address.  The \"-d\" won't  go  out  of  its  way  to  collect\nsensitive  information,  but  the log will contain a fairly complete transcript of Wget's\ncommunication with the server, which may include passwords and pieces of downloaded data.\nSince the bug address is publicly archived, you may  assume  that  all  bug  reports  are\nvisible to the public.\n\n4.  If  Wget  has crashed, try to run it in a debugger, e.g. \"gdb `which wget` core\" and type\n\"where\" to get the backtrace.  This may not work if the system administrator has disabled\ncore files, but it is safe to try.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "This is not the complete manual for GNU Wget.  For more complete information, including  more\ndetailed explanations of some of the options, and a number of commands available for use with\n.wgetrc files and the -e option, see the GNU Info entry for wget.\n\nAlso  see  wget2(1),  the  updated version of GNU Wget with even better support for recursive\ndownloading and modern protocols like HTTP/2.\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "Originally written by Hrvoje Nikšić <hniksic@xemacs.org>.  Currently  maintained  by  Darshit\nShah <darnir@gnu.org> and Tim Rühsen <tim.ruehsen@gmx.de>.\n",
            "subsections": []
        },
        "COPYRIGHT": {
            "content": "Copyright (c) 1996--2011, 2015, 2018--2023 Free Software Foundation, Inc.\n\nPermission  is granted to copy, distribute and/or modify this document under the terms of the\nGNU Free Documentation License, Version 1.3 or  any  later  version  published  by  the  Free\nSoftware Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-\nCover  Texts.   A  copy  of  the  license  is  included  in  the  section  entitled \"GNU Free\nDocumentation License\".\n\nGNU Wget 1.21.4                              2026-07-16                                      WGET(1)",
            "subsections": []
        }
    },
    "summary": "Wget - The non-interactive network downloader.",
    "flags": [
        {
            "flag": "-V",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--version",
            "arg": null,
            "description": "Display the version of Wget."
        },
        {
            "flag": "-h",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--help",
            "arg": null,
            "description": "Print a help message describing all of Wget's command-line options."
        },
        {
            "flag": "-b",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--background",
            "arg": null,
            "description": "Go to background immediately after startup. If no output file is specified via the -o, output is redirected to wget-log."
        },
        {
            "flag": "-e",
            "long": null,
            "arg": null,
            "description": "--execute command Execute command as if it were a part of .wgetrc. A command thus invoked will be executed after the commands in .wgetrc, thus taking precedence over them. If you need to specify more than one wgetrc command, use multiple instances of -e."
        },
        {
            "flag": "-o",
            "long": null,
            "arg": null,
            "description": "--output-file=logfile Log all messages to logfile. The messages are normally reported to standard error."
        },
        {
            "flag": "-a",
            "long": null,
            "arg": null,
            "description": "--append-output=logfile Append to logfile. This is the same as -o, only it appends to logfile instead of overwriting the old log file. If logfile does not exist, a new file is created."
        },
        {
            "flag": "-d",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--debug",
            "arg": null,
            "description": "Turn on debug output, meaning various information important to the developers of Wget if it does not work properly. Your system administrator may have chosen to compile Wget without debug support, in which case -d will not work. Please note that compiling with debug support is always safe---Wget compiled with the debug support will not print any debug info unless requested with -d."
        },
        {
            "flag": "-q",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--quiet",
            "arg": null,
            "description": "Turn off Wget's output."
        },
        {
            "flag": "-v",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--verbose",
            "arg": null,
            "description": "Turn on verbose output, with all the available data. The default output is verbose."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--no-verbose",
            "arg": null,
            "description": "Turn off verbose without being completely quiet (use -q for that), which means that error messages and basic information still get printed. --report-speed=type Output bandwidth as type. The only accepted value is bits."
        },
        {
            "flag": "-i",
            "long": null,
            "arg": null,
            "description": "--input-file=file Read URLs from a local or external file. If - is specified as file, URLs are read from the standard input. (Use ./- to read from a file literally named -.) If this function is used, no URLs need be present on the command line. If there are URLs both on the command line and in an input file, those on the command lines will be the first ones to be retrieved. If --force-html is not specified, then file should consist of a series of URLs, one per line. However, if you specify --force-html, the document will be regarded as html. In that case you may have problems with relative links, which you can solve either by adding \"<base href=\"url\">\" to the documents or by specifying --base=url on the command line. If the file is an external one, the document will be automatically treated as html if the Content-Type matches text/html. Furthermore, the file's location will be implicitly used as base href if none was specified. --input-metalink=file Downloads files covered in local Metalink file. Metalink version 3 and 4 are supported."
        },
        {
            "flag": "",
            "long": "--keep-badhash",
            "arg": null,
            "description": "Keeps downloaded Metalink's files with a bad hash. It appends .badhash to the name of Metalink's files which have a checksum mismatch, except without overwriting existing files."
        },
        {
            "flag": "",
            "long": "--metalink-over-http",
            "arg": null,
            "description": "Issues HTTP HEAD request instead of GET and extracts Metalink metadata from response headers. Then it switches to Metalink download. If no valid Metalink metadata is found, it falls back to ordinary HTTP download. Enables Content-Type: application/metalink4+xml files download/processing. --metalink-index=number Set the Metalink application/metalink4+xml metaurl ordinal NUMBER. From 1 to the total number of \"application/metalink4+xml\" available. Specify 0 or inf to choose the first good one. Metaurls, such as those from a --metalink-over-http, may have been sorted by priority key's value; keep this in mind to choose the right NUMBER."
        },
        {
            "flag": "",
            "long": "--preferred-location",
            "arg": null,
            "description": "Set preferred location for Metalink resources. This has effect if multiple resources with same priority are available."
        },
        {
            "flag": "",
            "long": "--xattr",
            "arg": null,
            "description": "Enable use of file system's extended attributes to save the original URL and the Referer HTTP header value if used. Be aware that the URL might contain private information like access tokens or credentials."
        },
        {
            "flag": "-F",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--force-html",
            "arg": null,
            "description": "When input is read from a file, force it to be treated as an HTML file. This enables you to retrieve relative links from existing HTML files on your local disk, by adding \"<base href=\"url\">\" to HTML, or using the --base command-line option."
        },
        {
            "flag": "-B",
            "long": null,
            "arg": null,
            "description": "--base=URL Resolves relative links using URL as the point of reference, when reading links from an HTML file specified via the -i/--input-file option (together with --force-html, or when the input file was fetched remotely from a server describing it as HTML). This is equivalent to the presence of a \"BASE\" tag in the HTML input file, with URL as the value for the \"href\" attribute. For instance, if you specify http://foo/bar/a.html for URL, and Wget reads ../baz/b.html from the input file, it would be resolved to http://foo/baz/b.html. --config=FILE Specify the location of a startup file you wish to use instead of the default one(s). Use --no-config to disable reading of config files. If both --config and --no-config are given, --no-config is ignored. --rejected-log=logfile Logs all URL rejections to logfile as comma separated values. The values include the reason of rejection, the URL and the parent URL it was found in."
        },
        {
            "flag": "-t",
            "long": null,
            "arg": null,
            "description": "--tries=number Set number of tries to number. Specify 0 or inf for infinite retrying. The default is to retry 20 times, with the exception of fatal errors like \"connection refused\" or \"not found\" (404), which are not retried."
        },
        {
            "flag": "-O",
            "long": null,
            "arg": null,
            "description": "--output-document=file The documents will not be written to the appropriate files, but all will be concatenated together and written to file. If - is used as file, documents will be printed to standard output, disabling link conversion. (Use ./- to print to a file literally named -.) Use of -O is not intended to mean simply \"use the name file instead of the one in the URL;\" rather, it is analogous to shell redirection: wget -O file http://foo is intended to work like wget -O - http://foo > file; file will be truncated immediately, and all downloaded content will be written there. For this reason, -N (for timestamp-checking) is not supported in combination with -O: since file is always newly created, it will always have a very new timestamp. A warning will be issued if this combination is used. Similarly, using -r or -p with -O may not work as you expect: Wget won't just download the first file to file and then download the rest to their normal names: all downloaded content will be placed in file. This was disabled in version 1.11, but has been reinstated (with a warning) in 1.11.2, as there are some cases where this behavior can actually have some use. A combination with -nc is only accepted if the given output file does not exist. Note that a combination with -k is only permitted when downloading a single document, as in that case it will just convert all relative URIs to external ones; -k makes no sense for multiple URIs when they're all being downloaded to a single file; -k can be used only when the output is a regular file."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--no-clobber",
            "arg": null,
            "description": "If a file is downloaded more than once in the same directory, Wget's behavior depends on a few options, including -nc. In certain cases, the local file will be clobbered, or overwritten, upon repeated download. In other cases it will be preserved. When running Wget without -N, -nc, -r, or -p, downloading the same file in the same directory will result in the original copy of file being preserved and the second copy being named file.1. If that file is downloaded yet again, the third copy will be named file.2, and so on. (This is also the behavior with -nd, even if -r or -p are in effect.) When -nc is specified, this behavior is suppressed, and Wget will refuse to download newer copies of file. Therefore, \"\"no-clobber\"\" is actually a misnomer in this mode---it's not clobbering that's prevented (as the numeric suffixes were already preventing clobbering), but rather the multiple version saving that's prevented. When running Wget with -r or -p, but without -N, -nd, or -nc, re-downloading a file will result in the new copy simply overwriting the old. Adding -nc will prevent this behavior, instead causing the original version to be preserved and any newer copies on the server to be ignored. When running Wget with -N, with or without -r or -p, the decision as to whether or not to download a newer copy of a file depends on the local and remote timestamp and size of the file. -nc may not be specified at the same time as -N. A combination with -O/--output-document is only accepted if the given output file does not exist. Note that when -nc is specified, files with the suffixes .html or .htm will be loaded from the local disk and parsed as if they had been retrieved from the Web. --backups=backups Before (over)writing a file, back up an existing file by adding a .1 suffix (1 on VMS) to the file name. Such backup files are rotated to .2, .3, and so on, up to backups (and lost beyond that)."
        },
        {
            "flag": "",
            "long": "--no-netrc",
            "arg": null,
            "description": "Do not try to obtain credentials from .netrc file. By default .netrc file is searched for credentials in case none have been passed on command line and authentication is required."
        },
        {
            "flag": "-c",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--continue",
            "arg": null,
            "description": "Continue getting a partially-downloaded file. This is useful when you want to finish up a download started by a previous instance of Wget, or by another program. For instance: wget -c ftp://sunsite.doc.ic.ac.uk/ls-lR.Z If there is a file named ls-lR.Z in the current directory, Wget will assume that it is the first portion of the remote file, and will ask the server to continue the retrieval from an offset equal to the length of the local file. Note that you don't need to specify this option if you just want the current invocation of Wget to retry downloading a file should the connection be lost midway through. This is the default behavior. -c only affects resumption of downloads started prior to this invocation of Wget, and whose local files are still sitting around. Without -c, the previous example would just download the remote file to ls-lR.Z.1, leaving the truncated ls-lR.Z file alone. If you use -c on a non-empty file, and the server does not support continued downloading, Wget will restart the download from scratch and overwrite the existing file entirely. Beginning with Wget 1.7, if you use -c on a file which is of equal size as the one on the server, Wget will refuse to download the file and print an explanatory message. The same happens when the file is smaller on the server than locally (presumably because it was changed on the server since your last download attempt)---because \"continuing\" is not meaningful, no download occurs. On the other side of the coin, while using -c, any file that's bigger on the server than locally will be considered an incomplete download and only \"(length(remote) - length(local))\" bytes will be downloaded and tacked onto the end of the local file. This behavior can be desirable in certain cases---for instance, you can use wget -c to download just the new portion that's been appended to a data collection or log file. However, if the file is bigger on the server because it's been changed, as opposed to just appended to, you'll end up with a garbled file. Wget has no way of verifying that the local file is really a valid prefix of the remote file. You need to be especially careful of this when using -c in conjunction with -r, since every file will be considered as an \"incomplete download\" candidate. Another instance where you'll get a garbled file if you try to use -c is if you have a lame HTTP proxy that inserts a \"transfer interrupted\" string into the local file. In the future a \"rollback\" option may be added to deal with this case. Note that -c only works with FTP servers and with HTTP servers that support the \"Range\" header. --start-pos=OFFSET Start downloading at zero-based position OFFSET. Offset may be expressed in bytes, kilobytes with the `k' suffix, or megabytes with the `m' suffix, etc. --start-pos has higher precedence over --continue. When --start-pos and --continue are both specified, wget will emit a warning then proceed as if --continue was absent. Server support for continued download is required, otherwise --start-pos cannot help. See -c for details. --progress=type Select the type of the progress indicator you wish to use. Legal indicators are \"dot\" and \"bar\". The \"bar\" indicator is used by default. It draws an ASCII progress bar graphics (a.k.a \"thermometer\" display) indicating the status of retrieval. If the output is not a TTY, the \"dot\" bar will be used by default. Use --progress=dot to switch to the \"dot\" display. It traces the retrieval by printing dots on the screen, each dot representing a fixed amount of downloaded data. The progress type can also take one or more parameters. The parameters vary based on the type selected. Parameters to type are passed by appending them to the type sperated by a colon (:) like this: --progress=type:parameter1:parameter2. When using the dotted retrieval, you may set the style by specifying the type as dot:style. Different styles assign different meaning to one dot. With the \"default\" style each dot represents 1K, there are ten dots in a cluster and 50 dots in a line. The \"binary\" style has a more \"computer\"-like orientation---8K dots, 16-dots clusters and 48 dots per line (which makes for 384K lines). The \"mega\" style is suitable for downloading large files---each dot represents 64K retrieved, there are eight dots in a cluster, and 48 dots on each line (so each line contains 3M). If \"mega\" is not enough then you can use the \"giga\" style---each dot represents 1M retrieved, there are eight dots in a cluster, and 32 dots on each line (so each line contains 32M). With --progress=bar, there are currently two possible parameters, force and noscroll. When the output is not a TTY, the progress bar always falls back to \"dot\", even if --progress=bar was passed to Wget during invocation. This behaviour can be overridden and the \"bar\" output forced by using the \"force\" parameter as --progress=bar:force. By default, the bar style progress bar scroll the name of the file from left to right for the file being downloaded if the filename exceeds the maximum length allotted for its display. In certain cases, such as with --progress=bar:force, one may not want the scrolling filename in the progress bar. By passing the \"noscroll\" parameter, Wget can be forced to display as much of the filename as possible without scrolling through it. Note that you can set the default style using the \"progress\" command in .wgetrc. That setting may be overridden from the command line. For example, to force the bar output without scrolling, use --progress=bar:force:noscroll."
        },
        {
            "flag": "",
            "long": "--show-progress",
            "arg": null,
            "description": "Force wget to display the progress bar in any verbosity. By default, wget only displays the progress bar in verbose mode. One may however, want wget to display the progress bar on screen in conjunction with any other verbosity modes like --no-verbose or --quiet. This is often a desired a property when invoking wget to download several small/large files. In such a case, wget could simply be invoked with this parameter to get a much cleaner output on the screen. This option will also force the progress bar to be printed to stderr when used alongside the --output-file option."
        },
        {
            "flag": "-N",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--timestamping",
            "arg": null,
            "description": "Turn on time-stamping."
        },
        {
            "flag": "",
            "long": "--no-if-modified-since",
            "arg": null,
            "description": "Do not send If-Modified-Since header in -N mode. Send preliminary HEAD request instead. This has only effect in -N mode."
        },
        {
            "flag": "",
            "long": "--no-use-server-timestamps",
            "arg": null,
            "description": "Don't set the local file's timestamp by the one on the server. By default, when a file is downloaded, its timestamps are set to match those from the remote file. This allows the use of --timestamping on subsequent invocations of wget. However, it is sometimes useful to base the local file's timestamp on when it was actually downloaded; for that purpose, the --no-use-server-timestamps option has been provided."
        },
        {
            "flag": "-S",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--server-response",
            "arg": null,
            "description": "Print the headers sent by HTTP servers and responses sent by FTP servers."
        },
        {
            "flag": "",
            "long": "--spider",
            "arg": null,
            "description": "When invoked with this option, Wget will behave as a Web spider, which means that it will not download the pages, just check that they are there. For example, you can use Wget to check your bookmarks: wget --spider --force-html -i bookmarks.html This feature needs much more work for Wget to get close to the functionality of real web spiders."
        },
        {
            "flag": "-T",
            "long": null,
            "arg": null,
            "description": "--timeout=seconds Set the network timeout to seconds seconds. This is equivalent to specifying --dns-timeout, --connect-timeout, and --read-timeout, all at the same time. When interacting with the network, Wget can check for timeout and abort the operation if it takes too long. This prevents anomalies like hanging reads and infinite connects. The only timeout enabled by default is a 900-second read timeout. Setting a timeout to 0 disables it altogether. Unless you know what you are doing, it is best not to change the default timeout settings. All timeout-related options accept decimal values, as well as subsecond values. For example, 0.1 seconds is a legal (though unwise) choice of timeout. Subsecond timeouts are useful for checking server response times or for testing network latency. --dns-timeout=seconds Set the DNS lookup timeout to seconds seconds. DNS lookups that don't complete within the specified time will fail. By default, there is no timeout on DNS lookups, other than that implemented by system libraries. --connect-timeout=seconds Set the connect timeout to seconds seconds. TCP connections that take longer to establish will be aborted. By default, there is no connect timeout, other than that implemented by system libraries. --read-timeout=seconds Set the read (and write) timeout to seconds seconds. The \"time\" of this timeout refers to idle time: if, at any point in the download, no data is received for more than the specified number of seconds, reading fails and the download is restarted. This option does not directly affect the duration of the entire download. Of course, the remote server may choose to terminate the connection sooner than this option requires. The default read timeout is 900 seconds. --limit-rate=amount Limit the download speed to amount bytes per second. Amount may be expressed in bytes, kilobytes with the k suffix, or megabytes with the m suffix. For example, --limit-rate=20k will limit the retrieval rate to 20KB/s. This is useful when, for whatever reason, you don't want Wget to consume the entire available bandwidth. This option allows the use of decimal numbers, usually in conjunction with power suffixes; for example, --limit-rate=2.5k is a legal value. Note that Wget implements the limiting by sleeping the appropriate amount of time after a network read that took less time than specified by the rate. Eventually this strategy causes the TCP transfer to slow down to approximately the specified rate. However, it may take some time for this balance to be achieved, so don't be surprised if limiting the rate doesn't work well with very small files."
        },
        {
            "flag": "-w",
            "long": null,
            "arg": null,
            "description": "--wait=seconds Wait the specified number of seconds between the retrievals. Use of this option is recommended, as it lightens the server load by making the requests less frequent. Instead of in seconds, the time can be specified in minutes using the \"m\" suffix, in hours using \"h\" suffix, or in days using \"d\" suffix. Specifying a large value for this option is useful if the network or the destination host is down, so that Wget can wait long enough to reasonably expect the network error to be fixed before the retry. The waiting interval specified by this function is influenced by \"--random-wait\", which see. --waitretry=seconds If you don't want Wget to wait between every retrieval, but only between retries of failed downloads, you can use this option. Wget will use linear backoff, waiting 1 second after the first failure on a given file, then waiting 2 seconds after the second failure on that file, up to the maximum number of seconds you specify. By default, Wget will assume a value of 10 seconds."
        },
        {
            "flag": "",
            "long": "--random-wait",
            "arg": null,
            "description": "Some web sites may perform log analysis to identify retrieval programs such as Wget by looking for statistically significant similarities in the time between requests. This option causes the time between requests to vary between 0.5 and 1.5 * wait seconds, where wait was specified using the --wait option, in order to mask Wget's presence from such analysis. A 2001 article in a publication devoted to development on a popular consumer platform provided code to perform this analysis on the fly. Its author suggested blocking at the class C address level to ensure automated retrieval programs were blocked despite changing DHCP-supplied addresses. The --random-wait option was inspired by this ill-advised recommendation to block many unrelated users from a web site due to the actions of one."
        },
        {
            "flag": "",
            "long": "--no-proxy",
            "arg": null,
            "description": "Don't use proxies, even if the appropriate *proxy environment variable is defined."
        },
        {
            "flag": "-Q",
            "long": null,
            "arg": null,
            "description": "--quota=quota Specify download quota for automatic retrievals. The value can be specified in bytes (default), kilobytes (with k suffix), or megabytes (with m suffix). Note that quota will never affect downloading a single file. So if you specify wget -Q10k https://example.com/ls-lR.gz, all of the ls-lR.gz will be downloaded. The same goes even when several URLs are specified on the command-line. The quota is checked only at the end of each downloaded file, so it will never result in a partially downloaded file. Thus you may safely type wget -Q2m -i sites---download will be aborted after the file that exhausts the quota is completely downloaded. Setting quota to 0 or to inf unlimits the download quota."
        },
        {
            "flag": "",
            "long": "--no-dns-cache",
            "arg": null,
            "description": "Turn off caching of DNS lookups. Normally, Wget remembers the IP addresses it looked up from DNS so it doesn't have to repeatedly contact the DNS server for the same (typically small) set of hosts it retrieves from. This cache exists in memory only; a new Wget run will contact DNS again. However, it has been reported that in some situations it is not desirable to cache host names, even for the duration of a short-running application like Wget. With this option Wget issues a new DNS lookup (more precisely, a new call to \"gethostbyname\" or \"getaddrinfo\") each time it makes a new connection. Please note that this option will not affect caching that might be performed by the resolving library or by an external caching layer, such as NSCD. If you don't understand exactly what this option does, you probably won't need it. --restrict-file-names=modes Change which characters found in remote URLs must be escaped during generation of local filenames. Characters that are restricted by this option are escaped, i.e. replaced with %HH, where HH is the hexadecimal number that corresponds to the restricted character. This option may also be used to force all alphabetical cases to be either lower- or uppercase. By default, Wget escapes the characters that are not valid or safe as part of file names on your operating system, as well as control characters that are typically unprintable. This option is useful for changing these defaults, perhaps because you are downloading to a non-native partition, or because you want to disable escaping of the control characters, or you want to further restrict characters to only those in the ASCII range of values. The modes are a comma-separated set of text values. The acceptable values are unix, windows, nocontrol, ascii, lowercase, and uppercase. The values unix and windows are mutually exclusive (one will override the other), as are lowercase and uppercase. Those last are special cases, as they do not change the set of characters that would be escaped, but rather force local file paths to be converted either to lower- or uppercase. When \"unix\" is specified, Wget escapes the character / and the control characters in the ranges 0--31 and 128--159. This is the default on Unix-like operating systems. When \"windows\" is given, Wget escapes the characters \\, |, /, :, ?, \", *, <, >, and the control characters in the ranges 0--31 and 128--159. In addition to this, Wget in Windows mode uses + instead of : to separate host and port in local file names, and uses @ instead of ? to separate the query portion of the file name from the rest. Therefore, a URL that would be saved as www.xemacs.org:4300/search.pl?input=blah in Unix mode would be saved as www.xemacs.org+4300/search.pl@input=blah in Windows mode. This mode is the default on Windows. If you specify nocontrol, then the escaping of the control characters is also switched off. This option may make sense when you are downloading URLs whose names contain UTF-8 characters, on a system which can save and display filenames in UTF-8 (some possible byte values used in UTF-8 byte sequences fall in the range of values designated by Wget as \"controls\"). The ascii mode is used to specify that any bytes whose values are outside the range of ASCII characters (that is, greater than 127) shall be escaped. This can be useful when saving filenames whose encoding does not match the one used locally."
        },
        {
            "flag": "-4",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--inet4-only",
            "arg": null,
            "description": ""
        },
        {
            "flag": "-6",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--inet6-only",
            "arg": null,
            "description": "Force connecting to IPv4 or IPv6 addresses. With --inet4-only or -4, Wget will only connect to IPv4 hosts, ignoring AAAA records in DNS, and refusing to connect to IPv6 addresses specified in URLs. Conversely, with --inet6-only or -6, Wget will only connect to IPv6 hosts and ignore A records and IPv4 addresses. Neither options should be needed normally. By default, an IPv6-aware Wget will use the address family specified by the host's DNS record. If the DNS responds with both IPv4 and IPv6 addresses, Wget will try them in sequence until it finds one it can connect to. (Also see \"--prefer-family\" option described below.) These options can be used to deliberately force the use of IPv4 or IPv6 address families on dual family systems, usually to aid debugging or to deal with broken network configuration. Only one of --inet6-only and --inet4-only may be specified at the same time. Neither option is available in Wget compiled without IPv6 support."
        },
        {
            "flag": "",
            "long": "--prefer-family",
            "arg": "none/IPv4/IPv6",
            "description": "When given a choice of several addresses, connect to the addresses with specified address family first. The address order returned by DNS is used without change by default. This avoids spurious errors and connect attempts when accessing hosts that resolve to both IPv6 and IPv4 addresses from IPv4 networks. For example, www.kame.net resolves to 2001:200:0:8002:203:47ff:fea5:3085 and to 203.178.141.194. When the preferred family is \"IPv4\", the IPv4 address is used first; when the preferred family is \"IPv6\", the IPv6 address is used first; if the specified value is \"none\", the address order returned by DNS is used without change. Unlike -4 and -6, this option doesn't inhibit access to any address family, it only changes the order in which the addresses are accessed. Also note that the reordering performed by this option is stable---it doesn't affect order of addresses of the same family. That is, the relative order of all IPv4 addresses and of all IPv6 addresses remains intact in all cases."
        },
        {
            "flag": "",
            "long": "--retry-connrefused",
            "arg": null,
            "description": "Consider \"connection refused\" a transient error and try again. Normally Wget gives up on a URL when it is unable to connect to the site because failure to connect is taken as a sign that the server is not running at all and that retries would not help. This option is for mirroring unreliable sites whose servers tend to disappear for short periods of time. --user=user --password=password Specify the username user and password password for both FTP and HTTP file retrieval. These parameters can be overridden using the --ftp-user and --ftp-password options for FTP connections and the --http-user and --http-password options for HTTP connections."
        },
        {
            "flag": "",
            "long": "--ask-password",
            "arg": null,
            "description": "Prompt for a password for each connection established. Cannot be specified when --password is being used, because they are mutually exclusive. --use-askpass=command Prompt for a user and password using the specified command. If no command is specified then the command in the environment variable WGETASKPASS is used. If WGETASKPASS is not set then the command in the environment variable SSHASKPASS is used. You can set the default command for use-askpass in the .wgetrc. That setting may be overridden from the command line."
        },
        {
            "flag": "",
            "long": "--no-iri",
            "arg": null,
            "description": "Turn off internationalized URI (IRI) support. Use --iri to turn it on. IRI support is activated by default. You can set the default state of IRI support using the \"iri\" command in .wgetrc. That setting may be overridden from the command line. --local-encoding=encoding Force Wget to use encoding as the default system encoding. That affects how Wget converts URLs specified as arguments from locale to UTF-8 for IRI support. Wget use the function nllanginfo() and then the \"CHARSET\" environment variable to get the locale. If it fails, ASCII is used. You can set the default local encoding using the \"localencoding\" command in .wgetrc. That setting may be overridden from the command line. --remote-encoding=encoding Force Wget to use encoding as the default remote server encoding. That affects how Wget converts URIs found in files from remote encoding to UTF-8 during a recursive fetch. This options is only useful for IRI support, for the interpretation of non-ASCII characters. For HTTP, remote encoding can be found in HTTP \"Content-Type\" header and in HTML \"Content-Type http-equiv\" meta tag. You can set the default encoding using the \"remoteencoding\" command in .wgetrc. That setting may be overridden from the command line."
        },
        {
            "flag": "",
            "long": "--unlink",
            "arg": null,
            "description": "Force Wget to unlink file instead of clobbering existing file. This option is useful for downloading to the directory with hardlinks."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--no-directories",
            "arg": null,
            "description": "Do not create a hierarchy of directories when retrieving recursively. With this option turned on, all files will get saved to the current directory, without clobbering (if a name shows up more than once, the filenames will get extensions .n)."
        },
        {
            "flag": "-x",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--force-directories",
            "arg": null,
            "description": "The opposite of -nd---create a hierarchy of directories, even if one would not have been created otherwise. E.g. wget -x http://fly.srk.fer.hr/robots.txt will save the downloaded file to fly.srk.fer.hr/robots.txt."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--no-host-directories",
            "arg": null,
            "description": "Disable generation of host-prefixed directories. By default, invoking Wget with -r http://fly.srk.fer.hr/ will create a structure of directories beginning with fly.srk.fer.hr/. This option disables such behavior."
        },
        {
            "flag": "",
            "long": "--protocol-directories",
            "arg": null,
            "description": "Use the protocol name as a directory component of local file names. For example, with this option, wget -r http://host will save to http/host/... rather than just to host/.... --cut-dirs=number Ignore number directory components. This is useful for getting a fine-grained control over the directory where recursive retrieval will be saved. Take, for example, the directory at ftp://ftp.xemacs.org/pub/xemacs/. If you retrieve it with -r, it will be saved locally under ftp.xemacs.org/pub/xemacs/. While the -nH option can remove the ftp.xemacs.org/ part, you are still stuck with pub/xemacs. This is where --cut-dirs comes in handy; it makes Wget not \"see\" number remote directory components. Here are several examples of how --cut-dirs option works. No options -> ftp.xemacs.org/pub/xemacs/ -nH -> pub/xemacs/ -nH --cut-dirs=1 -> xemacs/ -nH --cut-dirs=2 -> . --cut-dirs=1 -> ftp.xemacs.org/xemacs/ ... If you just want to get rid of the directory structure, this option is similar to a combination of -nd and -P. However, unlike -nd, --cut-dirs does not lose with subdirectories---for instance, with -nH --cut-dirs=1, a beta/ subdirectory will be placed to xemacs/beta, as one would expect."
        },
        {
            "flag": "-P",
            "long": null,
            "arg": null,
            "description": "--directory-prefix=prefix Set directory prefix to prefix. The directory prefix is the directory where all other files and subdirectories will be saved to, i.e. the top of the retrieval tree. The default is . (the current directory)."
        },
        {
            "flag": "-E",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--adjust-extension",
            "arg": null,
            "description": "If a file of type application/xhtml+xml or text/html is downloaded and the URL does not end with the regexp \\.[Hh][Tt][Mm][Ll]?, this option will cause the suffix .html to be appended to the local filename. This is useful, for instance, when you're mirroring a remote site that uses .asp pages, but you want the mirrored pages to be viewable on your stock Apache server. Another good use for this is when you're downloading CGI-generated materials. A URL like http://site.com/article.cgi?25 will be saved as article.cgi?25.html. Note that filenames changed in this way will be re-downloaded every time you re-mirror a site, because Wget can't tell that the local X.html file corresponds to remote URL X (since it doesn't yet know that the URL produces output of type text/html or application/xhtml+xml. As of version 1.12, Wget will also ensure that any downloaded files of type text/css end in the suffix .css, and the option was renamed from --html-extension, to better reflect its new behavior. The old option name is still acceptable, but should now be considered deprecated. As of version 1.19.2, Wget will also ensure that any downloaded files with a \"Content-Encoding\" of br, compress, deflate or gzip end in the suffix .br, .Z, .zlib and .gz respectively. At some point in the future, this option may well be expanded to include suffixes for other types of content, including content types that are not parsed by Wget. --http-user=user --http-password=password Specify the username user and password password on an HTTP server. According to the type of the challenge, Wget will encode them using either the \"basic\" (insecure), the \"digest\", or the Windows \"NTLM\" authentication scheme. Another way to specify username and password is in the URL itself. Either method reveals your password to anyone who bothers to run \"ps\". To prevent the passwords from being seen, use the --use-askpass or store them in .wgetrc or .netrc, and make sure to protect those files from other users with \"chmod\". If the passwords are really important, do not leave them lying in those files either---edit the files and delete them after Wget has started the download."
        },
        {
            "flag": "",
            "long": "--no-http-keep-alive",
            "arg": null,
            "description": "Turn off the \"keep-alive\" feature for HTTP downloads. Normally, Wget asks the server to keep the connection open so that, when you download more than one document from the same server, they get transferred over the same TCP connection. This saves time and at the same time reduces the load on the server. This option is useful when, for some reason, persistent (keep-alive) connections don't work for you, for example due to a server bug or due to the inability of server-side scripts to cope with the connections."
        },
        {
            "flag": "",
            "long": "--no-cache",
            "arg": null,
            "description": "Disable server-side cache. In this case, Wget will send the remote server appropriate directives (Cache-Control: no-cache and Pragma: no-cache) to get the file from the remote service, rather than returning the cached version. This is especially useful for retrieving and flushing out-of-date documents on proxy servers. Caching is allowed by default."
        },
        {
            "flag": "",
            "long": "--no-cookies",
            "arg": null,
            "description": "Disable the use of cookies. Cookies are a mechanism for maintaining server-side state. The server sends the client a cookie using the \"Set-Cookie\" header, and the client responds with the same cookie upon further requests. Since cookies allow the server owners to keep track of visitors and for sites to exchange this information, some consider them a breach of privacy. The default is to use cookies; however, storing cookies is not on by default. --load-cookies file Load cookies from file before the first HTTP retrieval. file is a textual file in the format originally used by Netscape's cookies.txt file. You will typically use this option when mirroring sites that require that you be logged in to access some or all of their content. The login process typically works by the web server issuing an HTTP cookie upon receiving and verifying your credentials. The cookie is then resent by the browser when accessing that part of the site, and so proves your identity. Mirroring such a site requires Wget to send the same cookies your browser sends when communicating with the site. This is achieved by --load-cookies---simply point Wget to the location of the cookies.txt file, and it will send the same cookies your browser would send in the same situation. Different browsers keep textual cookie files in different locations: \"Netscape 4.x.\" The cookies are in ~/.netscape/cookies.txt. \"Mozilla and Netscape 6.x.\" Mozilla's cookie file is also named cookies.txt, located somewhere under ~/.mozilla, in the directory of your profile. The full path usually ends up looking somewhat like ~/.mozilla/default/some-weird-string/cookies.txt. \"Internet Explorer.\" You can produce a cookie file Wget can use by using the File menu, Import and Export, Export Cookies. This has been tested with Internet Explorer 5; it is not guaranteed to work with earlier versions. \"Other browsers.\" If you are using a different browser to create your cookies, --load-cookies will only work if you can locate or produce a cookie file in the Netscape format that Wget expects. If you cannot use --load-cookies, there might still be an alternative. If your browser supports a \"cookie manager\", you can use it to view the cookies used when accessing the site you're mirroring. Write down the name and value of the cookie, and manually instruct Wget to send those cookies, bypassing the \"official\" cookie support: wget --no-cookies --header \"Cookie: <name>=<value>\" --save-cookies file Save cookies to file before exiting. This will not save cookies that have expired or that have no expiry time (so-called \"session cookies\"), but also see --keep-session-cookies."
        },
        {
            "flag": "",
            "long": "--keep-session-cookies",
            "arg": null,
            "description": "When specified, causes --save-cookies to also save session cookies. Session cookies are normally not saved because they are meant to be kept in memory and forgotten when you exit the browser. Saving them is useful on sites that require you to log in or to visit the home page before you can access some pages. With this option, multiple Wget runs are considered a single browser session as far as the site is concerned. Since the cookie file format does not normally carry session cookies, Wget marks them with an expiry timestamp of 0. Wget's --load-cookies recognizes those as session cookies, but it might confuse other browsers. Also note that cookies so loaded will be treated as other session cookies, which means that if you want --save-cookies to preserve them again, you must use --keep-session-cookies again."
        },
        {
            "flag": "",
            "long": "--ignore-length",
            "arg": null,
            "description": "Unfortunately, some HTTP servers (CGI programs, to be more precise) send out bogus \"Content-Length\" headers, which makes Wget go wild, as it thinks not all the document was retrieved. You can spot this syndrome if Wget retries getting the same document again and again, each time claiming that the (otherwise normal) connection has closed on the very same byte. With this option, Wget will ignore the \"Content-Length\" header---as if it never existed. --header=header-line Send header-line along with the rest of the headers in each HTTP request. The supplied header is sent as-is, which means it must contain name and value separated by colon, and must not contain newlines. You may define more than one additional header by specifying --header more than once. wget --header='Accept-Charset: iso-8859-2' \\ --header='Accept-Language: hr' \\ http://fly.srk.fer.hr/ Specification of an empty string as the header value will clear all previous user-defined headers. As of Wget 1.10, this option can be used to override headers otherwise generated automatically. This example instructs Wget to connect to localhost, but to specify foo.bar in the \"Host\" header: wget --header=\"Host: foo.bar\" http://localhost/ In versions of Wget prior to 1.10 such use of --header caused sending of duplicate headers. --compression=type Choose the type of compression to be used. Legal values are auto, gzip and none. If auto or gzip are specified, Wget asks the server to compress the file using the gzip compression format. If the server compresses the file and responds with the \"Content-Encoding\" header field set appropriately, the file will be decompressed automatically. If none is specified, wget will not ask the server to compress the file and will not decompress any server responses. This is the default. Compression support is currently experimental. In case it is turned on, please report any bugs to \"bug-wget@gnu.org\". --max-redirect=number Specifies the maximum number of redirections to follow for a resource. The default is 20, which is usually far more than necessary. However, on those occasions where you want to allow more (or fewer), this is the option to use. --proxy-user=user --proxy-password=password Specify the username user and password password for authentication on a proxy server. Wget will encode them using the \"basic\" authentication scheme. Security considerations similar to those with --http-password pertain here as well. --referer=url Include `Referer: url' header in HTTP request. Useful for retrieving documents with server-side processing that assume they are always being retrieved by interactive web browsers and only come out properly when Referer is set to one of the pages that point to them."
        },
        {
            "flag": "",
            "long": "--save-headers",
            "arg": null,
            "description": "Save the headers sent by the HTTP server to the file, preceding the actual contents, with an empty line as the separator."
        },
        {
            "flag": "-U",
            "long": null,
            "arg": null,
            "description": "--user-agent=agent-string Identify as agent-string to the HTTP server. The HTTP protocol allows the clients to identify themselves using a \"User-Agent\" header field. This enables distinguishing the WWW software, usually for statistical purposes or for tracing of protocol violations. Wget normally identifies as Wget/version, version being the current version number of Wget. However, some sites have been known to impose the policy of tailoring the output according to the \"User-Agent\"-supplied information. While this is not such a bad idea in theory, it has been abused by servers denying information to clients other than (historically) Netscape or, more frequently, Microsoft Internet Explorer. This option allows you to change the \"User-Agent\" line issued by Wget. Use of this option is discouraged, unless you really know what you are doing. Specifying empty user agent with --user-agent=\"\" instructs Wget not to send the \"User-Agent\" header in HTTP requests. --post-data=string --post-file=file Use POST as the method for all HTTP requests and send the specified data in the request body. --post-data sends string as data, whereas --post-file sends the contents of file. Other than that, they work in exactly the same way. In particular, they both expect content of the form \"key1=value1&key2=value2\", with percent-encoding for special characters; the only difference is that one expects its content as a command-line parameter and the other accepts its content from a file. In particular, --post-file is not for transmitting files as form attachments: those must appear as \"key=value\" data (with appropriate percent-coding) just like everything else. Wget does not currently support \"multipart/form-data\" for transmitting POST data; only \"application/x-www-form-urlencoded\". Only one of --post-data and --post-file should be specified. Please note that wget does not require the content to be of the form \"key1=value1&key2=value2\", and neither does it test for it. Wget will simply transmit whatever data is provided to it. Most servers however expect the POST data to be in the above format when processing HTML Forms. When sending a POST request using the --post-file option, Wget treats the file as a binary file and will send every character in the POST request without stripping trailing newline or formfeed characters. Any other control characters in the text will also be sent as-is in the POST request. Please be aware that Wget needs to know the size of the POST data in advance. Therefore the argument to \"--post-file\" must be a regular file; specifying a FIFO or something like /dev/stdin won't work. It's not quite clear how to work around this limitation inherent in HTTP/1.0. Although HTTP/1.1 introduces chunked transfer that doesn't require knowing the request length in advance, a client can't use chunked unless it knows it's talking to an HTTP/1.1 server. And it can't know that until it receives a response, which in turn requires the request to have been completed -- a chicken-and-egg problem. Note: As of version 1.15 if Wget is redirected after the POST request is completed, its behaviour will depend on the response code returned by the server. In case of a 301 Moved Permanently, 302 Moved Temporarily or 307 Temporary Redirect, Wget will, in accordance with RFC2616, continue to send a POST request. In case a server wants the client to change the Request method upon redirection, it should send a 303 See Other response code. This example shows how to log in to a server using POST and then proceed to download the desired pages, presumably only accessible to authorized users: # Log in to the server. This can be done only once. wget --save-cookies cookies.txt \\ --post-data 'user=foo&password=bar' \\ http://example.com/auth.php # Now grab the page or pages we care about. wget --load-cookies cookies.txt \\ -p http://example.com/interesting/article.php If the server is using session cookies to track user authentication, the above will not work because --save-cookies will not save them (and neither will browsers) and the cookies.txt file will be empty. In that case use --keep-session-cookies along with --save-cookies to force saving of session cookies. --method=HTTP-Method For the purpose of RESTful scripting, Wget allows sending of other HTTP Methods without the need to explicitly set them using --header=Header-Line. Wget will use whatever string is passed to it after --method as the HTTP Method to the server. --body-data=Data-String --body-file=Data-File Must be set when additional data needs to be sent to the server along with the Method specified using --method. --body-data sends string as data, whereas --body-file sends the contents of file. Other than that, they work in exactly the same way. Currently, --body-file is not for transmitting files as a whole. Wget does not currently support \"multipart/form-data\" for transmitting data; only \"application/x-www-form-urlencoded\". In the future, this may be changed so that wget sends the --body-file as a complete file instead of sending its contents to the server. Please be aware that Wget needs to know the contents of BODY Data in advance, and hence the argument to --body-file should be a regular file. See --post-file for a more detailed explanation. Only one of --body-data and --body-file should be specified. If Wget is redirected after the request is completed, Wget will suspend the current method and send a GET request till the redirection is completed. This is true for all redirection response codes except 307 Temporary Redirect which is used to explicitly specify that the request method should not change. Another exception is when the method is set to \"POST\", in which case the redirection rules specified under --post-data are followed."
        },
        {
            "flag": "",
            "long": "--content-disposition",
            "arg": null,
            "description": "If this is set to on, experimental (not fully-functional) support for \"Content-Disposition\" headers is enabled. This can currently result in extra round-trips to the server for a \"HEAD\" request, and is known to suffer from a few bugs, which is why it is not currently enabled by default. This option is useful for some file-downloading CGI programs that use \"Content-Disposition\" headers to describe what the name of a downloaded file should be. When combined with --metalink-over-http and --trust-server-names, a Content-Type: application/metalink4+xml file is named using the \"Content-Disposition\" filename field, if available."
        },
        {
            "flag": "",
            "long": "--content-on-error",
            "arg": null,
            "description": "If this is set to on, wget will not skip the content when the server responds with a http status code that indicates error."
        },
        {
            "flag": "",
            "long": "--trust-server-names",
            "arg": null,
            "description": "If this is set, on a redirect, the local file name will be based on the redirection URL. By default the local file name is based on the original URL. When doing recursive retrieving this can be helpful because in many web sites redirected URLs correspond to an underlying file structure, while link URLs do not."
        },
        {
            "flag": "",
            "long": "--auth-no-challenge",
            "arg": null,
            "description": "If this option is given, Wget will send Basic HTTP authentication information (plaintext username and password) for all requests, just like Wget 1.10.2 and prior did by default. Use of this option is not recommended, and is intended only to support some few obscure servers, which never send HTTP authentication challenges, but accept unsolicited auth info, say, in addition to form-based authentication."
        },
        {
            "flag": "",
            "long": "--retry-on-host-error",
            "arg": null,
            "description": "Consider host errors, such as \"Temporary failure in name resolution\", as non-fatal, transient errors. --retry-on-http-error=code[,code,...] Consider given HTTP response codes as non-fatal, transient errors. Supply a comma- separated list of 3-digit HTTP response codes as argument. Useful to work around special circumstances where retries are required, but the server responds with an error code normally not retried by Wget. Such errors might be 503 (Service Unavailable) and 429 (Too Many Requests). Retries enabled by this option are performed subject to the normal retry timing and retry count limitations of Wget. Using this option is intended to support special use cases only and is generally not recommended, as it can force retries even in cases where the server is actually trying to decrease its load. Please use wisely and only if you know what you are doing."
        },
        {
            "flag": "",
            "long": "--https-only",
            "arg": null,
            "description": "When in recursive mode, only HTTPS links are followed."
        },
        {
            "flag": "",
            "long": "--ciphers",
            "arg": null,
            "description": "Set the cipher list string. Typically this string sets the cipher suites and other SSL/TLS options that the user wish should be used, in a set order of preference (GnuTLS calls it 'priority string'). This string will be fed verbatim to the SSL/TLS engine (OpenSSL or GnuTLS) and hence its format and syntax is dependent on that. Wget will not process or manipulate it in any way. Refer to the OpenSSL or GnuTLS documentation for more information."
        },
        {
            "flag": "",
            "long": "--no-check-certificate",
            "arg": null,
            "description": "Don't check the server certificate against the available certificate authorities. Also don't require the URL host name to match the common name presented by the certificate. As of Wget 1.10, the default is to verify the server's certificate against the recognized certificate authorities, breaking the SSL handshake and aborting the download if the verification fails. Although this provides more secure downloads, it does break interoperability with some sites that worked with previous Wget versions, particularly those using self-signed, expired, or otherwise invalid certificates. This option forces an \"insecure\" mode of operation that turns the certificate verification errors into warnings and allows you to proceed. If you encounter \"certificate verification\" errors or ones saying that \"common name doesn't match requested host name\", you can use this option to bypass the verification and proceed with the download. Only use this option if you are otherwise convinced of the site's authenticity, or if you really don't care about the validity of its certificate. It is almost always a bad idea not to check the certificates when transmitting confidential or important data. For self-signed/internal certificates, you should download the certificate and verify against that instead of forcing this insecure mode. If you are really sure of not desiring any certificate verification, you can specify --check-certificate=quiet to tell wget to not print any warning about invalid certificates, albeit in most cases this is the wrong thing to do. --certificate=file Use the client certificate stored in file. This is needed for servers that are configured to require certificates from the clients that connect to them. Normally a certificate is not required and this switch is optional. --certificate-type=type Specify the type of the client certificate. Legal values are PEM (assumed by default) and DER, also known as ASN1. --private-key=file Read the private key from file. This allows you to provide the private key in a file separate from the certificate. --private-key-type=type Specify the type of the private key. Accepted values are PEM (the default) and DER. --ca-certificate=file Use file as the file with the bundle of certificate authorities (\"CA\") to verify the peers. The certificates must be in PEM format. Without this option Wget looks for CA certificates at the system-specified locations, chosen at OpenSSL installation time. --ca-directory=directory Specifies directory containing CA certificates in PEM format. Each file contains one CA certificate, and the file name is based on a hash value derived from the certificate. This is achieved by processing a certificate directory with the \"crehash\" utility supplied with OpenSSL. Using --ca-directory is more efficient than --ca-certificate when many certificates are installed because it allows Wget to fetch certificates on demand. Without this option Wget looks for CA certificates at the system-specified locations, chosen at OpenSSL installation time. --crl-file=file Specifies a CRL file in file. This is needed for certificates that have been revocated by the CAs."
        },
        {
            "flag": "",
            "long": "--pinnedpubkey",
            "arg": "file/hashes",
            "description": "Tells wget to use the specified public key file (or hashes) to verify the peer. This can be a path to a file which contains a single public key in PEM or DER format, or any number of base64 encoded sha256 hashes preceded by \"sha256//\" and separated by \";\" When negotiating a TLS or SSL connection, the server sends a certificate indicating its identity. A public key is extracted from this certificate and if it does not exactly match the public key(s) provided to this option, wget will abort the connection before sending or receiving any data. --random-file=file [OpenSSL and LibreSSL only] Use file as the source of random data for seeding the pseudo- random number generator on systems without /dev/urandom. On such systems the SSL library needs an external source of randomness to initialize. Randomness may be provided by EGD (see --egd-file below) or read from an external source specified by the user. If this option is not specified, Wget looks for random data in $RANDFILE or, if that is unset, in $HOME/.rnd. If you're getting the \"Could not seed OpenSSL PRNG; disabling SSL.\" error, you should provide random data using some of the methods described above. --egd-file=file [OpenSSL only] Use file as the EGD socket. EGD stands for Entropy Gathering Daemon, a user-space program that collects data from various unpredictable system sources and makes it available to other programs that might need it. Encryption software, such as the SSL library, needs sources of non-repeating randomness to seed the random number generator used to produce cryptographically strong keys. OpenSSL allows the user to specify his own source of entropy using the \"RANDFILE\" environment variable. If this variable is unset, or if the specified file does not produce enough randomness, OpenSSL will read random data from EGD socket specified using this option. If this option is not specified (and the equivalent startup command is not used), EGD is never contacted. EGD is not needed on modern Unix systems that support /dev/urandom."
        },
        {
            "flag": "",
            "long": "--no-hsts",
            "arg": null,
            "description": "Wget supports HSTS (HTTP Strict Transport Security, RFC 6797) by default. Use --no-hsts to make Wget act as a non-HSTS-compliant UA. As a consequence, Wget would ignore all the \"Strict-Transport-Security\" headers, and would not enforce any existing HSTS policy. --hsts-file=file By default, Wget stores its HSTS database in ~/.wget-hsts. You can use --hsts-file to override this. Wget will use the supplied file as the HSTS database. Such file must conform to the correct HSTS database format used by Wget. If Wget cannot parse the provided file, the behaviour is unspecified. The Wget's HSTS database is a plain text file. Each line contains an HSTS entry (ie. a site that has issued a \"Strict-Transport-Security\" header and that therefore has specified a concrete HSTS policy to be applied). Lines starting with a dash (\"#\") are ignored by Wget. Please note that in spite of this convenient human-readability hand- hacking the HSTS database is generally not a good idea. An HSTS entry line consists of several fields separated by one or more whitespace: \"<hostname> SP [<port>] SP <include subdomains> SP <created> SP <max-age>\" The hostname and port fields indicate the hostname and port to which the given HSTS policy applies. The port field may be zero, and it will, in most of the cases. That means that the port number will not be taken into account when deciding whether such HSTS policy should be applied on a given request (only the hostname will be evaluated). When port is different to zero, both the target hostname and the port will be evaluated and the HSTS policy will only be applied if both of them match. This feature has been included for testing/development purposes only. The Wget testsuite (in testenv/) creates HSTS databases with explicit ports with the purpose of ensuring Wget's correct behaviour. Applying HSTS policies to ports other than the default ones is discouraged by RFC 6797 (see Appendix B \"Differences between HSTS Policy and Same-Origin Policy\"). Thus, this functionality should not be used in production environments and port will typically be zero. The last three fields do what they are expected to. The field includesubdomains can either be 1 or 0 and it signals whether the subdomains of the target domain should be part of the given HSTS policy as well. The created and max-age fields hold the timestamp values of when such entry was created (first seen by Wget) and the HSTS-defined value 'max-age', which states how long should that HSTS policy remain active, measured in seconds elapsed since the timestamp stored in created. Once that time has passed, that HSTS policy will no longer be valid and will eventually be removed from the database. If you supply your own HSTS database via --hsts-file, be aware that Wget may modify the provided file if any change occurs between the HSTS policies requested by the remote servers and those in the file. When Wget exits, it effectively updates the HSTS database by rewriting the database file with the new entries. If the supplied file does not exist, Wget will create one. This file will contain the new HSTS entries. If no HSTS entries were generated (no \"Strict-Transport-Security\" headers were sent by any of the servers) then no file will be created, not even an empty one. This behaviour applies to the default database file (~/.wget-hsts) as well: it will not be created until some server enforces an HSTS policy. Care is taken not to override possible changes made by other Wget processes at the same time over the HSTS database. Before dumping the updated HSTS entries on the file, Wget will re-read it and merge the changes. Using a custom HSTS database and/or modifying an existing one is discouraged. For more information about the potential security threats arose from such practice, see section 14 \"Security Considerations\" of RFC 6797, specially section 14.9 \"Creative Manipulation of HSTS Policy Store\". --warc-file=file Use file as the destination WARC file. --warc-header=string Use string into as the warcinfo record. --warc-max-size=size Set the maximum size of the WARC files to size."
        },
        {
            "flag": "",
            "long": "--warc-cdx",
            "arg": null,
            "description": "Write CDX index files. --warc-dedup=file Do not store records listed in this CDX file."
        },
        {
            "flag": "",
            "long": "--no-warc-compression",
            "arg": null,
            "description": "Do not compress WARC files with GZIP."
        },
        {
            "flag": "",
            "long": "--no-warc-digests",
            "arg": null,
            "description": "Do not calculate SHA1 digests."
        },
        {
            "flag": "",
            "long": "--no-warc-keep-log",
            "arg": null,
            "description": "Do not store the log file in a WARC record. --warc-tempdir=dir Specify the location for temporary files created by the WARC writer."
        },
        {
            "flag": "",
            "long": "--no-remove-listing",
            "arg": null,
            "description": "Don't remove the temporary .listing files generated by FTP retrievals. Normally, these files contain the raw directory listings received from FTP servers. Not removing them can be useful for debugging purposes, or when you want to be able to easily check on the contents of remote server directories (e.g. to verify that a mirror you're running is complete). Note that even though Wget writes to a known filename for this file, this is not a security hole in the scenario of a user making .listing a symbolic link to /etc/passwd or something and asking \"root\" to run Wget in his or her directory. Depending on the options used, either Wget will refuse to write to .listing, making the globbing/recursion/time-stamping operation fail, or the symbolic link will be deleted and replaced with the actual .listing file, or the listing will be written to a .listing.number file. Even though this situation isn't a problem, though, \"root\" should never run Wget in a non-trusted user's directory. A user could do something as simple as linking index.html to /etc/passwd and asking \"root\" to run Wget with -N or -r so the file will be overwritten."
        },
        {
            "flag": "",
            "long": "--no-glob",
            "arg": null,
            "description": "Turn off FTP globbing. Globbing refers to the use of shell-like special characters (wildcards), like *, ?, [ and ] to retrieve more than one file from the same directory at once, like: wget ftp://gnjilux.srk.fer.hr/*.msg By default, globbing will be turned on if the URL contains a globbing character. This option may be used to turn globbing on or off permanently. You may have to quote the URL to protect it from being expanded by your shell. Globbing makes Wget look for a directory listing, which is system-specific. This is why it currently works only with Unix FTP servers (and the ones emulating Unix \"ls\" output)."
        },
        {
            "flag": "",
            "long": "--no-passive-ftp",
            "arg": null,
            "description": "Disable the use of the passive FTP transfer mode. Passive FTP mandates that the client connect to the server to establish the data connection rather than the other way around. If the machine is connected to the Internet directly, both passive and active FTP should work equally well. Behind most firewall and NAT configurations passive FTP has a better chance of working. However, in some rare firewall configurations, active FTP actually works when passive FTP doesn't. If you suspect this to be the case, use this option, or set \"passiveftp=off\" in your init file."
        },
        {
            "flag": "",
            "long": "--preserve-permissions",
            "arg": null,
            "description": "Preserve remote file permissions instead of permissions set by umask."
        },
        {
            "flag": "",
            "long": "--retr-symlinks",
            "arg": null,
            "description": "By default, when retrieving FTP directories recursively and a symbolic link is encountered, the symbolic link is traversed and the pointed-to files are retrieved. Currently, Wget does not traverse symbolic links to directories to download them recursively, though this feature may be added in the future. When --retr-symlinks=no is specified, the linked-to file is not downloaded. Instead, a matching symbolic link is created on the local file system. The pointed-to file will not be retrieved unless this recursive retrieval would have encountered it separately and downloaded it anyway. This option poses a security risk where a malicious FTP Server may cause Wget to write to files outside of the intended directories through a specially crafted .LISTING file. Note that when retrieving a file (not a directory) because it was specified on the command-line, rather than because it was recursed to, this option has no effect. Symbolic links are always traversed in this case."
        },
        {
            "flag": "",
            "long": "--ftps-implicit",
            "arg": null,
            "description": "This option tells Wget to use FTPS implicitly. Implicit FTPS consists of initializing SSL/TLS from the very beginning of the control connection. This option does not send an \"AUTH TLS\" command: it assumes the server speaks FTPS and directly starts an SSL/TLS connection. If the attempt is successful, the session continues just like regular FTPS (\"PBSZ\" and \"PROT\" are sent, etc.). Implicit FTPS is no longer a requirement for FTPS implementations, and thus many servers may not support it. If --ftps-implicit is passed and no explicit port number specified, the default port for implicit FTPS, 990, will be used, instead of the default port for the \"normal\" (explicit) FTPS which is the same as that of FTP, 21."
        },
        {
            "flag": "",
            "long": "--no-ftps-resume-ssl",
            "arg": null,
            "description": "Do not resume the SSL/TLS session in the data channel. When starting a data connection, Wget tries to resume the SSL/TLS session previously started in the control connection. SSL/TLS session resumption avoids performing an entirely new handshake by reusing the SSL/TLS parameters of a previous session. Typically, the FTPS servers want it that way, so Wget does this by default. Under rare circumstances however, one might want to start an entirely new SSL/TLS session in every data connection. This is what --no-ftps-resume-ssl is for."
        },
        {
            "flag": "",
            "long": "--ftps-clear-data-connection",
            "arg": null,
            "description": "All the data connections will be in plain text. Only the control connection will be under SSL/TLS. Wget will send a \"PROT C\" command to achieve this, which must be approved by the server."
        },
        {
            "flag": "",
            "long": "--ftps-fallback-to-ftp",
            "arg": null,
            "description": "Fall back to FTP if FTPS is not supported by the target server. For security reasons, this option is not asserted by default. The default behaviour is to exit with an error. If a server does not successfully reply to the initial \"AUTH TLS\" command, or in the case of implicit FTPS, if the initial SSL/TLS connection attempt is rejected, it is considered that such server does not support FTPS."
        },
        {
            "flag": "-r",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--recursive",
            "arg": null,
            "description": "Turn on recursive retrieving. The default maximum depth is 5."
        },
        {
            "flag": "-l",
            "long": null,
            "arg": null,
            "description": "--level=depth Set the maximum number of subdirectories that Wget will recurse into to depth. In order to prevent one from accidentally downloading very large websites when using recursion this is limited to a depth of 5 by default, i.e., it will traverse at most 5 directories deep starting from the provided URL. Set -l 0 or -l inf for infinite recursion depth. wget -r -l 0 http://<site>/1.html Ideally, one would expect this to download just 1.html. but unfortunately this is not the case, because -l 0 is equivalent to -l inf---that is, infinite recursion. To download a single HTML page (or a handful of them), specify them all on the command line and leave away -r and -l. To download the essential items to view a single HTML page, see page requisites."
        },
        {
            "flag": "",
            "long": "--delete-after",
            "arg": null,
            "description": "This option tells Wget to delete every single file it downloads, after having done so. It is useful for pre-fetching popular pages through a proxy, e.g.: wget -r -nd --delete-after http://whatever.com/~popular/page/ The -r option is to retrieve recursively, and -nd to not create directories. Note that --delete-after deletes files on the local machine. It does not issue the DELE command to remote FTP sites, for instance. Also note that when --delete-after is specified, --convert-links is ignored, so .orig files are simply not created in the first place."
        },
        {
            "flag": "-k",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--convert-links",
            "arg": null,
            "description": "After the download is complete, convert the links in the document to make them suitable for local viewing. This affects not only the visible hyperlinks, but any part of the document that links to external content, such as embedded images, links to style sheets, hyperlinks to non-HTML content, etc. Each link will be changed in one of the two ways: • The links to files that have been downloaded by Wget will be changed to refer to the file they point to as a relative link. Example: if the downloaded file /foo/doc.html links to /bar/img.gif, also downloaded, then the link in doc.html will be modified to point to ../bar/img.gif. This kind of transformation works reliably for arbitrary combinations of directories. • The links to files that have not been downloaded by Wget will be changed to include host name and absolute path of the location they point to. Example: if the downloaded file /foo/doc.html links to /bar/img.gif (or to ../bar/img.gif), then the link in doc.html will be modified to point to http://hostname/bar/img.gif. Because of this, local browsing works reliably: if a linked file was downloaded, the link will refer to its local name; if it was not downloaded, the link will refer to its full Internet address rather than presenting a broken link. The fact that the former links are converted to relative links ensures that you can move the downloaded hierarchy to another directory. Note that only at the end of the download can Wget know which links have been downloaded. Because of that, the work done by -k will be performed at the end of all the downloads."
        },
        {
            "flag": "",
            "long": "--convert-file-only",
            "arg": null,
            "description": "This option converts only the filename part of the URLs, leaving the rest of the URLs untouched. This filename part is sometimes referred to as the \"basename\", although we avoid that term here in order not to cause confusion. It works particularly well in conjunction with --adjust-extension, although this coupling is not enforced. It proves useful to populate Internet caches with files downloaded from different hosts. Example: if some link points to //foo.com/bar.cgi?xyz with --adjust-extension asserted and its local destination is intended to be ./foo.com/bar.cgi?xyz.css, then the link would be converted to //foo.com/bar.cgi?xyz.css. Note that only the filename part has been modified. The rest of the URL has been left untouched, including the net path (\"//\") which would otherwise be processed by Wget and converted to the effective scheme (ie. \"http://\")."
        },
        {
            "flag": "-K",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--backup-converted",
            "arg": null,
            "description": "When converting a file, back up the original version with a .orig suffix. Affects the behavior of -N."
        },
        {
            "flag": "-m",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--mirror",
            "arg": null,
            "description": "Turn on options suitable for mirroring. This option turns on recursion and time- stamping, sets infinite recursion depth and keeps FTP directory listings. It is currently equivalent to -r -N -l inf --no-remove-listing."
        },
        {
            "flag": "-p",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--page-requisites",
            "arg": null,
            "description": "This option causes Wget to download all the files that are necessary to properly display a given HTML page. This includes such things as inlined images, sounds, and referenced stylesheets. Ordinarily, when downloading a single HTML page, any requisite documents that may be needed to display it properly are not downloaded. Using -r together with -l can help, but since Wget does not ordinarily distinguish between external and inlined documents, one is generally left with \"leaf documents\" that are missing their requisites. For instance, say document 1.html contains an \"<IMG>\" tag referencing 1.gif and an \"<A>\" tag pointing to external document 2.html. Say that 2.html is similar but that its image is 2.gif and it links to 3.html. Say this continues up to some arbitrarily high number. If one executes the command: wget -r -l 2 http://<site>/1.html then 1.html, 1.gif, 2.html, 2.gif, and 3.html will be downloaded. As you can see, 3.html is without its requisite 3.gif because Wget is simply counting the number of hops (up to 2) away from 1.html in order to determine where to stop the recursion. However, with this command: wget -r -l 2 -p http://<site>/1.html all the above files and 3.html's requisite 3.gif will be downloaded. Similarly, wget -r -l 1 -p http://<site>/1.html will cause 1.html, 1.gif, 2.html, and 2.gif to be downloaded. One might think that: wget -r -l 0 -p http://<site>/1.html would download just 1.html and 1.gif, but unfortunately this is not the case, because -l 0 is equivalent to -l inf---that is, infinite recursion. To download a single HTML page (or a handful of them, all specified on the command-line or in a -i URL input file) and its (or their) requisites, simply leave off -r and -l: wget -p http://<site>/1.html Note that Wget will behave as if -r had been specified, but only that single page and its requisites will be downloaded. Links from that page to external documents will not be followed. Actually, to download a single page and all its requisites (even if they exist on separate websites), and make sure the lot displays properly locally, this author likes to use a few options in addition to -p: wget -E -H -k -K -p http://<site>/<document> To finish off this topic, it's worth knowing that Wget's idea of an external document link is any URL specified in an \"<A>\" tag, an \"<AREA>\" tag, or a \"<LINK>\" tag other than \"<LINK REL=\"stylesheet\">\"."
        },
        {
            "flag": "",
            "long": "--strict-comments",
            "arg": null,
            "description": "Turn on strict parsing of HTML comments. The default is to terminate comments at the first occurrence of -->. According to specifications, HTML comments are expressed as SGML declarations. Declaration is special markup that begins with <! and ends with >, such as <!DOCTYPE ...>, that may contain comments between a pair of -- delimiters. HTML comments are \"empty declarations\", SGML declarations without any non-comment text. Therefore, <!--foo--> is a valid comment, and so is <!--one-- --two-->, but <!--1--2--> is not. On the other hand, most HTML writers don't perceive comments as anything other than text delimited with <!-- and -->, which is not quite the same. For example, something like <!------------> works as a valid comment as long as the number of dashes is a multiple of four (!). If not, the comment technically lasts until the next --, which may be at the other end of the document. Because of this, many popular browsers completely ignore the specification and implement what users have come to expect: comments delimited with <!-- and -->. Until version 1.9, Wget interpreted comments strictly, which resulted in missing links in many web pages that displayed fine in browsers, but had the misfortune of containing non- compliant comments. Beginning with version 1.9, Wget has joined the ranks of clients that implements \"naive\" comments, terminating each comment at the first occurrence of -->. If, for whatever reason, you want strict comment parsing, use this option to turn it on."
        },
        {
            "flag": "-A",
            "long": "--accept",
            "arg": null,
            "description": ""
        },
        {
            "flag": "-R",
            "long": "--reject",
            "arg": null,
            "description": "Specify comma-separated lists of file name suffixes or patterns to accept or reject. Note that if any of the wildcard characters, *, ?, [ or ], appear in an element of acclist or rejlist, it will be treated as a pattern, rather than a suffix. In this case, you have to enclose the pattern into quotes to prevent your shell from expanding it, like in -A \"*.mp3\" or -A '*.mp3'. --accept-regex urlregex --reject-regex urlregex Specify a regular expression to accept or reject the complete URL. --regex-type regextype Specify the regular expression type. Possible types are posix or pcre. Note that to be able to use pcre type, wget has to be compiled with libpcre support."
        },
        {
            "flag": "-D",
            "long": null,
            "arg": null,
            "description": "--domains=domain-list Set domains to be followed. domain-list is a comma-separated list of domains. Note that it does not turn on -H. --exclude-domains domain-list Specify the domains that are not to be followed."
        },
        {
            "flag": "",
            "long": "--follow-ftp",
            "arg": null,
            "description": "Follow FTP links from HTML documents. Without this option, Wget will ignore all the FTP links. --follow-tags=list Wget has an internal table of HTML tag / attribute pairs that it considers when looking for linked documents during a recursive retrieval. If a user wants only a subset of those tags to be considered, however, he or she should be specify such tags in a comma- separated list with this option. --ignore-tags=list This is the opposite of the --follow-tags option. To skip certain HTML tags when recursively looking for documents to download, specify them in a comma-separated list. In the past, this option was the best bet for downloading a single page and its requisites, using a command-line like: wget --ignore-tags=a,area -H -k -K -r http://<site>/<document> However, the author of this option came across a page with tags like \"<LINK REL=\"home\" HREF=\"/\">\" and came to the realization that specifying tags to ignore was not enough. One can't just tell Wget to ignore \"<LINK>\", because then stylesheets will not be downloaded. Now the best bet for downloading a single page and its requisites is the dedicated --page-requisites option."
        },
        {
            "flag": "",
            "long": "--ignore-case",
            "arg": null,
            "description": "Ignore case when matching files and directories. This influences the behavior of -R, -A, -I, and -X options, as well as globbing implemented when downloading from FTP sites. For example, with this option, -A \"*.txt\" will match file1.txt, but also file2.TXT, file3.TxT, and so on. The quotes in the example are to prevent the shell from expanding the pattern."
        },
        {
            "flag": "-H",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--span-hosts",
            "arg": null,
            "description": "Enable spanning across hosts when doing recursive retrieving."
        },
        {
            "flag": "-L",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--relative",
            "arg": null,
            "description": "Follow relative links only. Useful for retrieving a specific home page without any distractions, not even those from the same hosts."
        },
        {
            "flag": "-I",
            "long": null,
            "arg": null,
            "description": "--include-directories=list Specify a comma-separated list of directories you wish to follow when downloading. Elements of list may contain wildcards."
        },
        {
            "flag": "-X",
            "long": null,
            "arg": null,
            "description": "--exclude-directories=list Specify a comma-separated list of directories you wish to exclude from download. Elements of list may contain wildcards."
        },
        {
            "flag": "",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "",
            "long": "--no-parent",
            "arg": null,
            "description": "Do not ever ascend to the parent directory when retrieving recursively. This is a useful option, since it guarantees that only the files below a certain hierarchy will be downloaded."
        }
    ],
    "examples": [],
    "see_also": [
        {
            "name": "wget2",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/wget2/1/json"
        }
    ],
    "tldr": {
        "source": "official",
        "description": "Download files from the Web.",
        "examples": [
            {
                "description": "Download the contents of a URL to a file (named \"foo\" in this case)",
                "command": "wget {{https://example.com/foo}}"
            },
            {
                "description": "Download the contents of a URL to a file (named \"bar\" in this case)",
                "command": "wget {{-O|--output-document}} {{bar}} {{https://example.com/foo}}"
            },
            {
                "description": "Download a single web page and all its resources with 3-second intervals between requests (scripts, stylesheets, images, etc.)",
                "command": "wget {{-pkw|--page-requisites --convert-links --wait}} 3 {{https://example.com/some_page.html}}"
            },
            {
                "description": "Download all listed files within a directory and its sub-directories (does not download embedded page elements)",
                "command": "wget {{-mnp|--mirror --no-parent}} {{https://example.com/some_path/}}"
            },
            {
                "description": "Limit the download speed and the number of connection retries",
                "command": "wget --limit-rate {{300k}} {{-t|--tries}} {{100}} {{https://example.com/some_path/}}"
            },
            {
                "description": "Download a file from an HTTP server using Basic Auth (also works for FTP)",
                "command": "wget --user {{username}} --password {{password}} {{https://example.com}}"
            },
            {
                "description": "Continue an incomplete download",
                "command": "wget {{-c|--continue}} {{https://example.com}}"
            },
            {
                "description": "Download all URLs stored in a text file to a specific directory",
                "command": "wget {{-P|--directory-prefix}} {{path/to/directory}} {{-i|--input-file}} {{path/to/URLs.txt}}"
            }
        ]
    }
}