# mcdiff - man - phpMan

[MC(1)](https://www.chedong.com/phpMan.php/man/MC/1/markdown)                                  GNU Midnight Commander                                  [MC(1)](https://www.chedong.com/phpMan.php/man/MC/1/markdown)



## NAME
       mc - Visual shell for Unix-like systems.

## SYNOPSIS
       **mc** [-abcCdfhPstuUVx] [-l log] [dir1 [dir2]] [-e [file] ...] [-v file]

## DESCRIPTION
       GNU Midnight Commander is a directory browser/file manager for Unix-like operating systems.

## OPTIONS
       _-a,_ _--stickchars_
              Disable usage of graphic characters for line drawing.

       _-b,_ _--nocolor_
              Force black and white display.

       _-c,_ _--color_
              Force color mode, please check the section Colors for more information.

       _-C_ _arg,_ _--colors=arg_
              Specify a different color set in the command line.  The format of arg is documented in
              the Colors section.

       _--configure-options_
              Display configure options.

       _-d,_ _--nomouse_
              Disable mouse support.

       _-D_ _N,_ _--debuglevel=N_
              Save the debug level for SMB VFS. N is in 0-10 range.

       _-e_ _[file],_ _--edit[=file]_
              Start the internal editor.  If the file is specified, open it on  startup.   See  also
              **mcedit** **(1)**.

       _-f,_ _--datadir_
              Display the compiled-in search paths for Midnight Commander files.

       _-F,_ _--datadir-info_
              Display extended info about compiled-in paths for Midnight Commander.

       _-g,_ _--oldmouse_
              Force  a  "normal  tracking"  mouse mode. Used when running on xterm-capable terminals
              (tmux/screen).

       _-k,_ _--resetsoft_
              Reset softkeys to their default from the termcap/terminfo database. Only useful on  HP
              terminals when the function keys don't work.

       _-K_ _file,_ _--keymap=file_
              Specify a name of keymap file in the command line.

       _-l_ _file,_ _--ftplog=file_
              Save the ftpfs dialog with the server in file.

       _--nokeymap_
              Don't load key bindings from any file, use default hardcoded keys.

       _-P_ _file,_ _--printwd=file_
              Print  the  last working directory to the specified file.  This option is not meant to
              be used directly.  Instead, it's used from a special shell script  that  automatically
              changes  the  current  directory of the shell to the last directory Midnight Commander
              was in. Source the file **/usr/lib/mc/mc.sh** (bash  and  zsh  users)  or  **/usr/lib/mc.csh**
              (tcsh users) respectively to define **mc** as an alias to the appropriate shell script.

       _-s,_ _--slow_
              Turn  on the slow terminal mode, in this mode the program will not draw expensive line
              drawing characters and will toggle verbose mode off.

       _-S_ _arg,_ _--skin=arg_
              Specify a name of skin in the command line. Technology of skins is documented  in  the
              Skins section.

       _-t,_ _--termcap_
              Used only if the code was compiled with S-Lang and terminfo: it makes Midnight Comman‐
              der use the value of the **TERMCAP** variable for the terminal information instead of  the
              information on the system wide terminal database

       _-u,_ _--nosubshell_
              Disable  use  of the concurrent shell (only makes sense if Midnight Commander has been
              built with concurrent shell support).

       _-U,_ _--subshell_
              Enable use of the concurrent shell support (only makes sense if the Midnight Commander
              was built with the subshell support set as an optional feature).

       _-v_ _file,_ _--view=file_
              Start the internal viewer to view the specified file.  See also **mcview** **(1)**.

       _-V,_ _--version_
              Display the version of the program.

       _-x,_ _--xterm_
              Force xterm mode.  Used when running on xterm-capable terminals (two screen modes, and
              able to send mouse escape sequences).

       _-X,_ _--no-x11_
              Do not use X11 to get the state of modifiers Alt, Ctrl, Shift

       If both paths are specified, the first path name is the  directory  to  show  in  the  active
       panel; the second path name is the directory to be shown in the other panel.

       If  one  path is specified, the path name is the directory to show in the active panel; value
       of "other_dir" from panels.ini is the directory to be shown in the passive panel.

       If no paths are specified,  current  directory  is  shown  in  the  active  panel;  value  of
       "other_dir" from panels.ini is the directory to be shown in the passive panel.

## Overview
       The  screen of Midnight Commander is divided into four parts.  Almost all of the screen space
       is taken up by two directory panels.  By default, the second line  from  the  bottom  of  the
       screen  is  the  shell  command line, and the bottom line shows the function key labels.  The
       topmost line is the menu bar line.  The menu bar line may not be visible, but appears if  you
       click the topmost line with the mouse or press the F9 key.

       Midnight  Commander provides a view of two directories at the same time. One of the panels is
       the current panel (a selection bar is in the current panel). Almost all operations take place
       on  the current panel. Some file operations like Rename and Copy by default use the directory
       of the unselected panel as a destination (don't worry, they always ask you  for  confirmation
       first).  For  more  information, see the sections on the Directory Panels, the Left and Right
       Menus and the File Menu.

       You can execute system commands from Midnight Commander by simply typing them. Everything you
       type will appear on the shell command line, and when you press Enter, Midnight Commander will
       execute the command line you typed; read the Shell Command Line and Input Line Keys  sections
       to learn more about the command line.

### Mouse Support
       Midnight  Commander  comes with mouse support. It is activated whenever you are running on an
       [**xterm(1)](https://www.chedong.com/phpMan.php/man/xterm/1/markdown)** terminal (it even works if you take a telnet, ssh or rlogin  connection  to  another
       machine  from  the  xterm)  or  if  you are running on a Linux console and have the **gpm** mouse
       server running.

       When you left click on a file in the directory panels, that file is selected;  if  you  click
       with the right button, the file is marked (or unmarked, depending on the previous state).

       Double-clicking on a file will try to execute the command if it is an executable program; and
       if the extension file has a program specified for the file's extension, the specified program
       is executed.

       Also,  it is possible to execute the commands assigned to the function key labels by clicking
       on them.

       The default auto repeat rate for the mouse buttons is 400 milliseconds. This may  be  changed
       to  other  values by editing the ~/.config/mc/ini file and changing the _mouse_repeat_rate_ pa‐
       rameter.

       If you are running Midnight Commander with the mouse support, you can get the  default  mouse
       behavior (cutting and pasting text) by holding down the Shift key.


## Keys
       Some commands in Midnight Commander involve the use of the _Control_ (sometimes labeled CTRL or
       CTL) and the _Meta_ (sometimes labeled ALT or even Compose) keys. In this manual  we  will  use
       the following abbreviations:

### C-<chr>
              means  hold the Control key while typing the character <chr>.  Thus C-f would be: hold
              the Control key and type f.

### Alt-<chr>
              means hold the Meta or Alt key down while typing <chr>.  If there is no  Meta  or  Alt
              key, type _Esc_, release it, then type the character <chr>.

### S-<chr>
              means hold the Shift key down while typing <chr>.

       All  input  lines  in  Midnight  Commander use an approximation to the GNU Emacs editor's key
       bindings (default).

       You may redefine key bindings. See _redefine_ _hotkey_ _bindings_

       for more info. All other key bindings (described in this manual) are relative to default  be‐
       havior.


       There are many sections which tell about the keys. The following are the most important.

       The File Menu section documents the keyboard shortcuts for the commands appearing in the File
       menu. This section includes the function keys. Most of these commands  perform  some  action,
       usually on the selected file or the tagged files.

       The  Directory Panels section documents the keys which select a file or tag files as a target
       for a later action (the action is usually one from the file menu).

       The Shell Command Line section list the keys which are used for entering and editing  command
       lines.  Most  of these copy file names and such from the directory panels to the command line
       (to avoid excessive typing) or access the command line history.

       Input Line Keys are used for editing input lines. This means both the command  line  and  the
       input lines in the query dialogs.


### Redefine hotkey bindings
       Hotkey  bindings may be read from external file (keymap-file).  Initially, Midnight Commander
       creates  key  bindings  using  keymap  defined  in  the  source   code.   Then,   two   files
       **/usr/share/mc/mc.keymap**  and **/etc/mc/mc.keymap** are loaded always, sequentially reassigned key
       bindings defined earlier.  User-defined keymap-file is searched on  the  following  algorithm
       (to the first one found):

              1) command line option **-K** **<keymap>** or **--keymap=<keymap>**
              2) Environment variable **MC**___**KEYMAP**
              3) Parameter **keymap** in section **[Midnight-Commander]** of config file.
              4) File **~/.config/mc/mc.keymap**

       Command  line option, environment variable and parameter in config file may contain the abso‐
       lute path to  the  keymap-file  (with  the  extension  .keymap  or  without  it).  Search  of
       keymap-file will occur in (to the first one found):

              1) **~/.config/mc**
              2) **/etc/mc/**
              3) **/usr/share/mc/**


### Miscellaneous Keys
       Here are some keys which don't fall into any of the other categories:

       **Enter**  if  there is some text in the command line (the one at the bottom of the panels), then
              that command is executed. If there is no text in the command line then if  the  selec‐
              tion  bar  is  over a directory the Midnight Commander does a [**chdir(2)](https://www.chedong.com/phpMan.php/man/chdir/2/markdown)** to the selected
              directory and reloads the information on the panel; if the selection is an  executable
              file  then it is executed. Finally, if the extension of the selected file name matches
              one of the extensions in the extensions file then the corresponding  command  is  exe‐
              cuted.

       **C-l**    repaint all the information in Midnight Commander.

       **C-x** **c**  run the Chmod command on a file or on the tagged files.

       **C-x** **o**  run the Chown command on the current file or on the tagged files.

       **C-x** **l**  run the hard link command.

       **C-x** **s**  run the absolute symbolic link command.

       **C-x** **v**  run the relative symbolic link command. See the File Menu section for more information
              about symbolic links.

       **C-x** **i**  set the other panel display mode to information.

       **C-x** **q**  set the other panel display mode to quick view.

       **C-x** **!**  execute the External panelize command.

       **C-x** **h**  run the add directory to hotlist command.

       **Alt-!**  executes the Filtered view command, described in the view command.

       **Alt-?**  executes the Find file command.

       **Alt-c**  pops up the quick cd dialog.

       **C-o**    when the program is being run in the Linux or FreeBSD console or under  an  xterm,  it
              will show you the output of the previous command.  When ran on the Linux console, Mid‐
              night Commander uses an external program (cons.saver) to handle saving  and  restoring
              of information on the screen.

       When  the subshell support is compiled in, you can type C-o at any time and you will be taken
       back to Midnight Commander's main screen, to return to your application just  type  C-o.   If
       you  have  an  application  suspended by using this trick, you won't be able to execute other
       programs from Midnight Commander until you terminate the suspended application.

### Directory Panels
       This section lists the keys which operate on the directory panels. If you want to know how to
       change the appearance of the panels take a look at the section on Left and Right Menus.

### Tab, C-i
              change  the  current  panel. The old other panel becomes the new current panel and the
              old current panel becomes the new other panel. The selection bar moves  from  the  old
              current panel to the new current panel.

### Insert, C-t
              to  tag  files  you  may  use  the Insert key (the kich1 terminfo sequence).  To untag
              files, just retag a tagged file.

       **Alt-e**  to change charset of panel you may use Alt-e (M-e).  Recoding is  made  from  selected
              codepage  into system codepage. To cancel the recoding, select "No translation" in the
              dialog of encodings.

### Alt-g, Alt-r, Alt-j
              used to select the top file in a panel, the middle file and the  bottom  one,  respec‐
              tively.

       **Alt-t**  toggle the current display listing to show the next display listing format.  With this
              it is possible to quickly switch to brief listing, long listing, user defined  listing
              format, and back to the default.

### C-\ (control-backslash)
              show the directory hotlist and change to the selected directory.

### +  (plus)
              this  is  used  to select (tag) a group of files. Midnight Commander will prompt for a
              selection options. When _Files_ _only_ checkbox is on, only files will  be  selected.   If
              _Files_  _only_  is  off,  as  files as directories will be selected.  When _Shell_ _Patterns_
              checkbox is on, the regular expression is much like the filename globbing in the shell
              (*  standing  for  zero or more characters and ? standing for one character). If _Shell_
              _Patterns_ is off, then the tagging of files is done  with  normal  regular  expressions
              (see ed (1)). When _Case_ _sensitive_ checkbox is on, the selection will be case sensitive
              characters.  If _Case_ _sensitive_ is off, the case will be ignored.

### \ (backslash)
              use the "\" key to unselect a group of files. This is the opposite of the Plus key.

### up-key, C-p
              move the selection bar to the previous entry in the panel.

### down-key, C-n
              move the selection bar to the next entry in the panel.

### home, a1, Alt-<
              move the selection bar to the first entry in the panel.

### end, c1, Alt->
              move the selection bar to the last entry in the panel.

### next-page, C-v
              move the selection bar one page down.

### prev-page, Alt-v
              move the selection bar one page up.

       **Alt-o**  If the currently selected file is a directory, load that directory on the other  panel
              and  moves the selection to the next file. If the currently selected file is not a di‐
              rectory, load the parent directory on the other panel and moves the selection  to  the
              next file.

       **Alt-i**  make  the  current  directory  of  the current panel also the current directory of the
              other panel.  Put the other panel to the listing mode if needed.  If the current panel
              is panelized, the other panel doesn't become panelized.

### C-PageUp, C-PageDown
              only  when supported by the terminal: change to ".." and to the currently selected di‐
              rectory respectively.

       **Alt-y**  moves to the previous directory in the history, equivalent to clicking the _<_ with  the
              mouse.

       **Alt-u**  moves  to  the  next  directory  in the history, equivalent to clicking the _>_ with the
              mouse.

### Alt-S-h, Alt-H
              displays the directory history, equivalent to depressing the 'v' with the mouse.

### Quick search
       The Quick search mode allows you to perform fast file search in file  panel.   Press  _C-s_  or
       _Alt-s_ to start a filename search in the directory listing.

       When  the  search is active, the user input will be added to the search string instead of the
       command line. If the _Show_ _mini-status_ option is enabled the search string  is  shown  on  the
       mini-status line. When typing, the selection bar will move to the next file starting with the
       typed letters. The _Backspace_ or _DEL_ keys can be used to correct typing mistakes.  If  C-s  is
       pressed again, the next match is searched for.

       If  quick  search  is  started with double pressing of C-s, the previous quick search pattern
       will be used for current search.

       Besides the filename characters, you can also use wildcard characters '*' and '?'.

### Shell Command Line
       This section lists keys which are useful to avoid excessive typing when entering  shell  com‐
       mands.

### Alt-Enter
              copy the currently selected file name to the command line.

### C-Enter
              same a Alt-Enter.  May not work on remote systems and some terminals.

### C-S-Enter
              copy  the  full path name of the currently selected file to the command line.  May not
              work on remote systems and some terminals.

### Alt-Tab
              does the filename, command, variable, username and hostname completion for you.

### C-x t, C-x C-t
              copy the tagged files (or if there are no tagged files, the selected file) of the cur‐
              rent panel (C-x t) or of the other panel (C-x C-t) to the command line.

### C-x p, C-x C-p
              the  first key sequence copies the current path name to the command line, and the sec‐
              ond one copies the unselected panel's path name to the command line.

       **C-q**    the quote command can be used to insert characters that are otherwise  interpreted  by
              Midnight Commander (like the '+' symbol)

### Alt-p, Alt-n
              use  these keys to browse through the command history. Alt-p takes you to the last en‐
              try, Alt-n takes you to the next one.

       **Alt-h**  displays the history for the current input line.

### General Movement Keys
       The help viewer, the file viewer and the directory tree use common  code  to  handle  moving.
       Therefore they accept exactly the same keys. Each of them also accepts some keys of its own.

       Other  parts of Midnight Commander use some of the same movement keys, so this section may be
       of use for those parts too.

### Up, C-p
              moves one line backward.

### Down, C-n
              moves one line forward.

### Prev Page, Page Up, Alt-v
              moves one page up.

### Next Page, Page Down, C-v
              moves one page down.

### Home, A1
              moves to the beginning.

### End, C1
              move to the end.

       The help viewer and the file viewer accept the following keys in addition the  to  ones  men‐
       tioned above:

### b, C-b, C-h, Backspace, Delete
              moves one page up.

### Space bar
              moves one page down.

       **u,** **d**   moves one half of a page up or down.

       **g,** **G**   moves to the beginning or to the end.

### Input Line Keys
       The input lines (they are used for the command line and for the query dialogs in the program)
       accept these keys:

       **C-a**    puts the cursor at the beginning of line.

       **C-e**    puts the cursor at the end of the line.

### C-b, move-left
              move the cursor one position left.

### C-f, move-right
              move the cursor one position right.

       **Alt-f**  moves one word forward.

       **Alt-b**  moves one word backward.

### C-h, Backspace
              delete the previous character.

### C-d, Delete
              delete the character in the point (over the cursor).

       **C-@**    sets the mark for cutting.

       **C-w**    copies the text between the cursor and the mark to a kill buffer and removes the  text
              from the input line.

       **Alt-w**  copies the text between the cursor and the mark to a kill buffer.

       **C-y**    yanks back the contents of the kill buffer.

       **C-k**    kills the text from the cursor to the end of the line.

### Alt-p, Alt-n
              Use  these keys to browse through the command history. Alt-p takes you to the last en‐
              try, Alt-n takes you to the next one.

### Alt-C-h, Alt-Backspace
              delete one word backward.

### Alt-Tab
              does the filename, command, variable, username and hostname completion for you.


### Menu Bar
       The menu bar pops up when you press F9 or click the mouse on the top row of the  screen.  The
       menu bar has five menus: "Left", "File", "Command", "Options" and "Right".

       The  Left  and Right Menus allow you to modify the appearance of the left and right directory
       panels.

       The File Menu lists the actions you can perform on the currently selected file or the  tagged
       files.

       The  Command  Menu  lists the actions which are more general and bear no relation to the cur‐
       rently selected file or the tagged files.

       The Options Menu lists the actions which allow you to customize Midnight Commander.

### Left and Right (Above and Below) Menus
       The outlook of the directory panels can be changed from the **Left** and **Right**  menus  (they  are
       named  **Above** and **Below** when the horizontal panel split is chosen from the Layout options dia‐
       log).

### Listing Format...
       The listing mode view is used to display a listing of files, there are four different listing
       formats  available: **Full**, **Brief**, **Long** and **User**.  The full directory view shows the file name,
       the size of the file and the modification time.

       The brief view shows only the file name and it has from 1 up to 9 columns (therefore  showing
       more  files unlike other views). The long view is similar to the output of **ls** **-l** command. The
       long view takes the whole screen width.

       If you choose the "User" display format, then you have to specify the display format.

       The user display format must start with a panel  size  specifier.   This  may  be  "half"  or
       "full", and they specify a half screen panel and a full screen panel respectively.

       After the panel size, you may specify how many listings to fit in the panel, side-by-side (in
       other words: how many times to repeat the fields horizontally). This defaults to 1.  You  may
       change this by adding a number from 1 to 9 to the format string.

       After  this  you  add  the  name of the fields with an optional size specifier.  This are the
       available fields you may display:

       **name**   displays the file name.

       **size**   displays the file size.

       **bsize**  is an alternative form of the **size** format. It displays the size of the files  and  for
              directories it just shows SUB-DIR or UP--DIR.

       **type**   displays  a  one character wide type field.  This character is similar to what is dis‐
              played by ls with the -F flag - ***** for executable  files,  **/**  for  directories,  **@**  for
              links, **=** for sockets, **-** for character devices, **+** for block devices, **|** for pipes, **~** for
              symbolic links to directories and **!**  for stale symlinks (links that point nowhere).

       **mark**   an asterisk if the file is tagged, a space if it's not.

       **mtime**  file's last modification time.

       **atime**  file's last access time.

       **ctime**  file's status change time.

       **perm**   a string representing the current permission bits of the file.

       **mode**   an octal value with the current permission bits of the file.

       **nlink**  the number of links to the file.

       **ngid**   the GID (numeric).

       **nuid**   the UID (numeric).

       **owner**  the owner of the file.

       **group**  the group of the file.

       **inode**  the inode of the file.

       Also you can use following keywords to define the panel layout:

       **space**  a space in the display format.

       **|**      add a vertical line to the display format.

       To force one field to a fixed size (a size specifier), you just add **:** followed by the  number
       of  characters  you  want the field to have.  If the number is followed by the symbol **+**, then
       the size specifies the minimal field size - if the program finds out that there is more space
       on the screen, it will then expand that field.

       For example, the **Full** display corresponds to this format:

       half type name | size | mtime

       And the **Long** display corresponds to this format:

       full perm space nlink space owner space group space size space mtime space name

       This is a nice user display format:

       half name | size:7 | type mode:3

       Panels may also be set to the following modes:

       **Info**   The info view display information related to the currently selected file and if possi‐
              ble information about the current file system.

       **Tree**   The tree view is quite similar to the directory tree feature. See the section about it
              for more information.

### Quick View
              In  this mode, the panel will switch to a reduced viewer that displays the contents of
              the currently selected file, if you select the panel (with the tab key or the  mouse),
              you will have access to the usual viewer commands.

### Sort Order...
       The eight sort orders are by name, by extension, by modification time, by access time, and by
       inode information modification time, by size, by inode and unsorted.  In the Sort order  dia‐
       log box you can choose the sort order and you may also specify if you want to sort in reverse
       order by checking the reverse box.

       By default directories are sorted before files but this can be changed from the Panel options
       menu (option **Mix** **all** **files**).

### Filter...
       The  filter  command  allows  you to specify a shell pattern (for example ***.tar.gz**) which the
       files must match to be shown. Regardless of the filter pattern, the directories and the links
       to directories are always shown in the directory panel.

### Reread
       The reread command reload the list of files in the directory. It is useful if other processes
       have created or removed files.

### File Menu
       Midnight Commander uses the F1 - F10 keys as keyboard shortcuts for commands appearing in the
       file  menu.   The escape sequences for the function keys are terminfo capabilities kf1 trough
       kf10.  On terminals without function key support, you can achieve the same  functionality  by
       pressing the Esc key and then a number in the range 1 through 9 and 0 (corresponding to F1 to
       F9 and F10 respectively).

       The File menu has the following commands (keyboard shortcuts in parentheses):

### Help (F1)

       Invokes the built-in hypertext help viewer. Inside the help viewer, you can use the  Tab  key
       to  select  the next link and the Enter key to follow that link. The keys Space and Backspace
       are used to move forward and backward in a help page. Press F1 again to get the full list  of
       accepted keys.

### Menu (F2)

       Invoke  the  user  menu.  The user menu provides an easy way to provide users with a menu and
       add extra features to Midnight Commander.

### View (F3, F13)

       View the currently selected file. By default this invokes the Internal File Viewer but if the
       option "Use internal view" is off, it invokes an external file viewer specified by the **VIEWER**
       environment variable.  If **VIEWER** is undefined, the **PAGER** environment variable is  tried.   If
       **PAGER**  is  also undefined, the "view" command is invoked.  If you use F13 instead, the viewer
       will be invoked without doing any formatting or preprocessing to the file.

       See parameters for external viewer for explain how you may specify an extended  command  line
       options for external viewers.

### Filtered View (Alt-!)

       This  command prompts for a command and its arguments (the argument defaults to the currently
       selected file name), the output from such command is shown in the internal file viewer.

### Edit (F4, F14)

       Press F4 to edit the highlighted file.  Press F14 (usually F14) to start the  editor  with  a
       new,  empty file.  Currently they invoke the **vi** editor, or the editor specified in the **EDITOR**
       environment variable, or the Internal File Editor if the use_internal_edit option is on.

       See parameters for external editor for explain how you may specify an extended  command  line
       options for external editors.

### Copy (F5, F15)

       Press  F5 to pop up an input dialog to copy the currently selected file (or the tagged files,
       if there is at least one file tagged) to the directory/filename you specify in the input dia‐
       log.  The destination defaults to the directory in the non-selected panel. Space for destina‐
       tion file may be preallocated relative to preallocate_space configure  option.   During  this
       process,  you  can  press  C-c  or Esc to abort the operation.  For details about source mask
       (which will be usually either * or ^\(.*\)$ depending on setting of Use shell  patterns)  and
       possible wildcards in the destination see Mask copy/rename.

       F15  (usually F15) is similar, but defaults to the directory in the selected panel. It always
       operates on the selected file, regardless of any tagged files.

       On some systems, it is possible to do the copy in the background by  clicking  on  the  back‐
       ground  button (or pressing Alt-b in the dialog box).  The Background Jobs is used to control
       the background process.

### Link (C-x l)

       Create a hard link to the current file.

### Absolute symlink (C-x s)

       Create a absolute symbolic link to the current file.

### Relative symLink (C-x v)

       Create a relative symbolic link to the current file.

       To those of you who don't know what links are: creating a link to a file is a bit like  copy‐
       ing  the  file,  but both the source filename and the destination filename represent the same
       file image. For example, if you edit one of these files, all changes you make will appear  in
       both files. Some people call links aliases or shortcuts.

       A  hard link appears as a real file. After making it, there is no way of telling which one is
       the original and which is the link. If you delete either one of them the other one  is  still
       intact.  It  is  very  difficult  to notice that the files represent the same image. Use hard
       links when you don't even want to know.

       A symbolic link is a reference to the name of the original file.  If  the  original  file  is
       deleted the symbolic link is useless. It is quite easy to notice that the files represent the
       same image. Midnight Commander shows an "@"-sign in front of the file name if it  is  a  sym‐
       bolic link to somewhere (except to directory, where it shows a tilde (~)).  The original file
       which the link points to is shown on mini-status line if the _Show_ _mini-status_ option  is  en‐
       abled.  Use  symbolic  links  when you want to avoid the confusion that can be caused by hard
       links.

       When you press "C-x s" Midnight Commander will automatically fill in the complete  path+file‐
       name of the original file and suggest a name for the link.  You can change either one.

       Sometimes  you  may want to change the absolute path of the original into a relative path. An
       absolute path starts from the root directory:

       _/home/frodo/mc/mc_ _->_ _/home/frodo/new/mc_

       A relative link describes the original file's location starting from the location of the link
       itself:

       _/home/frodo/mc/mc_ _->_ _../new/mc_

       You  can  force  Midnight Commander to suggest a relative path by pressing "C-x v" instead of
       "C-x s".

### Rename/Move (F6, F16)

       Press F6 to pop up an input dialog to copy the currently selected file (or the tagged  files,
       if there is at least one file tagged) to the directory/filename you specify in the input dia‐
       log.  The destination defaults to the directory in the non-selected panel. For  more  details
       look at Copy (F5) operation above, most of the things are quite similar.

       F16  (usually F16) is similar, but defaults to the directory in the selected panel. It always
       operates on the selected file, regardless of any tagged files.

       On some systems, it is possible to do the copy in the background by  clicking  on  the  back‐
       ground  button (or pressing Alt-b in the dialog box).  The Background Jobs is used to control
       the background process.

### Mkdir (F7)

       Pop up an input dialog and creates the directory specified.

### Delete (F8)

       Delete the currently selected file or the tagged files in the currently selected panel.  Dur‐
       ing the process, you can press C-c or Esc to abort the operation.

       **Quick**  **cd** **(Alt-c)** Use the quick cd command if you have full command line and want to cd some‐
       where.

### Select group (+)

       This is used to select (tag) a group of files. Midnight Commander will prompt for a selection
       options.  When _Files_ _only_ checkbox is on, only files will be selected.  If _Files_ _only_ is off,
       as files as directories will be selected.  When _Shell_ _Patterns_ checkbox is  on,  the  regular
       expression is much like the filename globbing in the shell (* standing for zero or more char‐
       acters and ?  standing for one character). If _Shell_ _Patterns_ is  off,  then  the  tagging  of
       files  is  done with normal regular expressions (see ed (1)). When _Case_ _sensitive_ checkbox is
       on, the selection will be case sensitive characters.  If _Case_ _sensitive_ is off, the case will
       be ignored.

### Unselect group (\)

       Used to unselect a group of files. This is the opposite of the _Select_ _group_ command.

### Quit (F10, S-F10)

       Terminate Midnight Commander. S-F10 is used when you want to quit and you are using the shell
       wrapper.  S-F10 will not take you to the last directory you visited with Midnight  Commander,
       instead it will stay at the directory where you started Midnight Commander.

### Quick cd
       This  command is useful if you have a full command line and want to cd somewhere without hav‐
       ing to yank and paste the command line. This command pops up a small dialog, where you  enter
       everything  you  would enter after **cd** on the command line and then you press enter. This fea‐
       tures all the things that are already in the internal cd command.

### Command Menu
       The Directory tree command shows a tree figure of the directories.

       The "Find file" command allows you to search for a specific file.

       The "Swap panels" command swaps the contents of the two directory panels.

       The "Switch panels on/off" command shows the output of the last shell  command.   This  works
       only on xterm and on Linux and FreeBSD console.

       The "Compare directories" command compares the directory panels with each other. You can then
       use the Copy (F5) command to make the panels identical. There are three compare methods.  The
       quick  method  compares  only  file  size  and  file  date.  The thorough method makes a full
       byte-by-byte compare. The thorough method is not available if the machine  does  not  support
       the  [mmap(2)](https://www.chedong.com/phpMan.php/man/mmap/2/markdown) system call.  The size-only compare method just compares the file sizes and does
       not check the contents or the date times, it just checks the file size.

       The "External panelize" allows you to execute an external program, and  make  the  output  of
       that program the contents of the current panel.

       The  "Command history" command shows a list of typed commands. The selected command is copied
       to the command line. The command history can also be accessed by typing Alt-p or Alt-n.

       The "Directory hotlist" command makes changing of the current directory to often used  direc‐
       tories faster.

       The  "Screen  list" command shows a dialog window with the list of currently running internal
       editors, viewers and other MC modules that support this mode.

       The "Edit extension file" command allows you to specify programs to executed when you try  to
       execute,  view, edit and do a bunch of other thing on files with certain extensions (filename
       endings).

       The "Edit Menu File" command may be used for editing the user menu (which appears by pressing
       F2).

### Directory Tree
       The Directory Tree command shows a tree figure of the directories. You can select a directory
       from the figure and Midnight Commander will change to that directory.

       There are two ways to invoke the tree. The real directory tree command is available from Com‐
       mands menu. The other way is to select tree view from the Left or Right menu.

       To  get  rid  of  long  delays, Midnight Commander creates the tree figure by scanning only a
       small subset of all the directories. If the directory which you want to see is missing,  move
       to its parent directory and press C-r (or F2).

       You can use the following keys:

       General movement keys
              are accepted.

       **Enter.** In  the  directory tree, exits the directory tree and changes to this directory in the
              current panel. In the tree view, changes to this directory  in  the  other  panel  and
              stays in tree view mode in the current panel.

### C-r, F2 (Rescan).
              Rescan  this  directory.  Use  this when the tree figure is out of date: it is missing
              subdirectories or shows some subdirectories which don't exist any more.

### F3 (Forget).
              Delete this directory from the tree figure. Use this to remove clutter from  the  fig‐
              ure.  If  you want the directory back to the tree figure press F2 in its parent direc‐
              tory.

### F4 (Static/Dynamic).
              Toggle between the dynamic navigation mode (default) and the static navigation mode.

       In the static navigation mode you can use the Up and Down keys to  select  a  directory.  All
       known directories are shown.

       In  the  dynamic  navigation mode you can use the Up and Down keys to select a sibling direc‐
       tory, the Left key to move to the parent directory, and the Right key to move to a child  di‐
       rectory.  Only  the  parent, sibling and children directories are shown, others are left out.
       The tree figure changes dynamically as you traverse.

### F5 (Copy).
              Copy the directory.

### F6 (RenMov).
              Move the directory.

### F7 (Mkdir).
              Make a new directory below this directory.

### F8 (Delete).
              Delete this directory from the file system.

### C-s, Alt-s.
              Search the next directory matching the search string. If there is  no  such  directory
              these keys will move one line down.

### C-h, Backspace.
              Delete the last character of the search string.

### Any other character.
              Add  the  character  to  the search string and move to the next directory which starts
              with these characters. In the tree view you must first activate  the  search  mode  by
              pressing C-s. The search string is shown in the mini status line.

       The  following actions are available only in the directory tree. They aren't supported in the
       tree view.

### F1 (Help).
              Invoke the help viewer and show this section.

### Esc, F10.
              Exit the directory tree. Do not change the directory.

       The mouse is supported. A double-click behaves like Enter. See also the section on mouse sup‐
       port.

### Find File
       The  Find  File feature first asks for the start directory for the search and the filename to
       be searched for. By pressing the Tree button you can select the start directory from the  di‐
       rectory tree figure.

       The "File name" input field contains a filename pattern to be searched for. It is interpreted
       as a shell pattern or as a regular expression depending on the state of the "Using shell pat‐
       terns" checkbox. An empty value is valid and matches any file name.

       The  "Content" input field contains a string to search for within the files. Leave this field
       empty to disable searching file contents.

       Option "Whole words" allows select only those files containing matches that form whole words.
       Like grep -w.

       You  can start the search by pressing the OK button.  During the search you can stop from the
       Stop button and continue from the Start button.

       You can browse the filelist with the up and down arrow keys. The Chdir button will change  to
       the  directory  of  the currently selected file. The Again button will ask for the parameters
       for a new search. The Quit button quits the search operation. The Panelize button will  place
       the  found  files  to the current directory panel so that you can do additional operations on
       them (view, copy, move, delete and so on). To return to the normal file listing,  change  di‐
       rectory to "..".

       The  'Enable  ignore  directories'  checkbox and input field below it allow one to set up the
       list of directories that should be skip during the search files (for example, you may want to
       avoid  searches  on  a CD-ROM or on a NFS directory that is mounted across a slow link). List
       components must be separated with a colon, here is an example:

       /cdrom:/nfs/wuarchive:/afs

       Relative paths are supported also. The following example shows how to skip  special  directo‐
       ries of version control systems:
       /cdrom:/nfs/wuarchive:/afs:.svn:.git:CVS

       Attention: input field can contain a dot (.), this means the current absolute path.

       You  may  consider using the External panelize command for some operations. Find file command
       is for simple queries only, while using External panelize you can do as  mysterious  searches
       as you would like.

### External panelize
       The  External panelize allows you to execute an external program, and make the output of that
       program the contents of the current panel.

       For example, if you want to manipulate in one of the panels all the  symbolic  links  in  the
       current directory, you can use external panelization to run the following command:

       find . -type l -print

       Upon  command completion, the directory contents of the panel will no longer be the directory
       listing of the current directory, but all the files that are symbolic links.

       If you want to panelize all of the files that have been downloaded from your FTP server,  you
       can use this awk command to extract the file name from the transfer log files:

       awk '$9 ~! /incoming/ { print $9 }' < /var/log/xferlog

       You  may  want to save often used panelize commands under a descriptive name, so that you can
       recall them quickly. You do this by typing the command on the input line and pressing Add new
       button.  Then  you  enter a name under which you want the command to be saved. Next time, you
       just choose that command from the list and do not have to type it again.

### Hotlist
       The Directory hotlist command shows the labels of the directories in the  directory  hotlist.
       Midnight  Commander  will  change to the directory corresponding to the selected label.  From
       the hotlist dialog, you can remove already created label/directory pairs and  add  new  ones.
       To  add  new  directories quickly, you can use the Add to hotlist command (C-x h), which adds
       the current directory into the directory hotlist, asking just for the label  for  the  direc‐
       tory.

       This makes cd to often used directories faster. You may consider using the CDPATH variable as
       described in internal cd command description.

### Edit Extension File
       This will invoke your editor on the file _~/.config/mc/mc.ext_.  The format of this  file  fol‐
       lowing:

       All lines starting with # or empty lines are thrown away.

       Lines starting in the first column should have following format:

       _keyword/expr_, i.e. everything after the slash until new line is _expr_.

       _keyword_ can be:

       _shell_  -  _expr_ is an extension (no wildcards).  File matches it its name ends with _expr_.  Ex‐
              ample: _shell/.tar_ matches _*.tar_.

       _regex_  - _expr_ is a regular expression.  File matches if its name matches the regular  expres‐
              sion.

       _directory_
              -  _expr_  is  a  regular  expression.   File  matches if it is a directory and its name
              matches the regular expression.

       _type_   - _expr_ is a regular expression.  File matches if the output of  _file_  _%f_  without  the
              initial "filename:" part matches regular expression _expr_.

       _default_
              - matches any file.  _expr_ is ignored.

       _include_
              - denotes a common section.  _expr_ is the name of the section.

       Other  lines  should  start  with a space or tab and should be of the format: _keyword=command_
       (with no spaces around =), where _keyword_ should be: _Open_ (invoked on Enter or double  click),
       _View_  (F3),  _Edit_  (F4)  or  _Include_  (to add rules from the common section).  _command_ is any
       one-line shell command, with the simple macro substitution.

       Rules are matched from top to bottom, thus the order is important.  If the appropriate action
       is  missing,  search continues as if this rule didn't match (i.e. if a file matches the first
       and second entry and View action is missing in the first one, then on pressing  F3  the  View
       action from the second entry will be used).  _default_ should match all the actions.

### Background Jobs
       This  lets  you control the state of any background Midnight Commander process (only copy and
       move files operations can be done in the background).  You can stop, restart and kill a back‐
       ground job from here.

### Edit Menu File
       The user menu is a menu of useful actions that can be customized by the user. When you access
       the user menu, the file .mc.menu from the current directory is used if it exists, but only if
       it  is  owned  by  user  or  root  and is not world-writable.  If no such file found, ~/.con‐
       fig/mc/menu is tried in the same way, and otherwise mc  uses  the  default  system-wide  menu
       /usr/share/mc/mc.menu.

       The  format  of the menu file is very simple. Lines that start with anything but space or tab
       are considered entries for the menu (in order to be able to use it like a hot key, the  first
       character  should  be  a letter). All the lines that start with a space or a tab are the com‐
       mands that will be executed when the entry is selected.

       When an option is selected all the command lines of the option are copied to a temporary file
       in the temporary directory (usually /usr/tmp) and then that file is executed. This allows the
       user to put normal shell constructs in the menus. Also simple macro substitution takes  place
       before executing the menu code. For more information, see macro substitution.

       Here is a sample mc.menu file:

       A    Dump the currently selected file
            od -c %f

       B    Edit a bug report and send it to root
            I=`mktemp ${MC_TMPDIR:-/tmp}/mail.XXXXXX` || exit 1
            vi $I
            mail -s "Midnight Commander bug" root < $I
            rm -f $I

       M    Read mail
            emacs -f rmail

       N    Read Usenet news
            emacs -f gnus

       H    Call the info hypertext browser
            info

       J    Copy current directory to other panel recursively
            tar cf - . | (cd %D && tar xvpf -)

       K    Make a release of the current subdirectory
            echo -n "Name of distribution file: "
            read tar
            ln -s %d `dirname %d`/$tar
            cd ..
            tar cvhf ${tar}.tar $tar

       = f *.tar.gz | f *.tgz & t n
       X       Extract the contents of a compressed tar file
            tar xzvf %f

### Default Conditions

       Each  menu entry may be preceded by a condition. The condition must start from the first col‐
       umn with a '=' character. If the condition is true, the menu entry will be the default entry.

       Condition syntax:   = <sub-cond>
         or:               = <sub-cond> | <sub-cond> ...
         or:               = <sub-cond> & <sub-cond> ...

       Sub-condition is one of following:

         y <pattern>       syntax of current file matching pattern?
                      (for edit menu only)
         f <pattern>       current file matching pattern?
         F <pattern>       other file matching pattern?
         d <pattern>       current directory matching pattern?
         D <pattern>       other directory matching pattern?
         t <type>          current file of type?
         T <type>          other file of type?
         x <filename>      is it executable filename?
         ! <sub-cond>      negate the result of sub-condition

       Pattern is a normal shell pattern or a regular expression, according to  the  shell  patterns
       option. You can override the global value of the shell patterns option by writing "shell_pat‐
       terns=x" on the first line of the menu file (where "x" is either 0 or 1).

       Type is one or more of the following characters:

         n  not a directory
         r  regular file
         d  directory
         l  link
         c  character device
         b  block device
         f  FIFO (pipe)
         s  socket
         x  executable file
         t  tagged

       For example 'rlf' means either regular file, link or fifo. The 't' type is a  little  special
       because  it  acts on the panel instead of the file. The condition '=t t' is true if there are
       tagged files in the current panel and false if not.

       If the condition starts with '=?' instead of '=' a debug trace will  be  shown  whenever  the
       value of the condition is calculated.

       The conditions are calculated from left to right. This means
            = f *.tar.gz | f *.tgz & t n
       is calculated as
            ( (f *.tar.gz) | (f *.tgz) ) & (t n)

       Here is a sample of the use of conditions:

       = f *.tar.gz | f *.tgz & t n
       L    List the contents of a compressed tar-archive
            gzip -cd %f | tar xvf -

### Addition Conditions

       If  the condition begins with '+' (or '+?') instead of '=' (or '=?') it is an addition condi‐
       tion. If the condition is true the menu entry will be included in the menu. If the  condition
       is false the menu entry will not be included in the menu.

       You  can  combine default and addition conditions by starting condition with '+=' or '=+' (or
       '+=?' or '=+?' if you want debug trace). If you want to use two different conditions, one for
       adding and another for defaulting, you can precede a menu entry with two condition lines, one
       starting with '+' and another starting with '='.

       Comments are started with '#'. The additional comment lines must start  with  '#',  space  or
       tab.

### Options Menu
       Midnight  Commander  has some options that may be toggled on and off in several dialogs which
       are accessible from this menu. Options are enabled if they have an asterisk or "x"  in  front
       of them.

       The Configuration command pops up a dialog from which you can change most of settings of Mid‐
       night Commander.

       The Layout command pops up a dialog from which you specify a bunch of options  how  mc  looks
       like on the screen.

       The  Panel  options  command  pops up a dialog from which you specify options of file manager
       panels.

       The Confirmation command pops up a dialog from which you specify which actions  you  want  to
       confirm.

       The Appearance command pops up a dialog from which you specify the skin.

       The  Display bits command pops up a dialog from which you may select which characters is your
       terminal able to display.

       The Learn keys command pops up a dialog from which you test some keys which are  not  working
       on some terminals and you may fix them.

       The Virtual FS command pops up a dialog from which you specify some VFS related options.

       The  Save  setup  command  saves the current settings of the Left, Right and Options menus. A
       small number of other settings is saved, too.

### Configuration
       The options in this dialog are divided into several groups: "File  operation  options",  "Esc
       key mode", "Pause after run" and "Other options".

### File operation options

       _Verbose_ _operation._  This toggles whether the file Copy, Rename and Delete operations are ver‐
       bose (i.e., display a dialog box for each operation). If you have a slow  terminal,  you  may
       wish  to  disable  the verbose operation. It is automatically turned off if the speed of your
       terminal is less than 9600 bps.

       _Compute_ _totals._  If this option is enabled, Midnight Commander computes total byte sizes  and
       total  number of files prior to any Copy, Rename and Delete operations. This will provide you
       with a more accurate progress bar at the expense of some speed. This option has no effect, if
       _Verbose_ _operation_ is disabled.

       _Classic_  _progressbar._   If this option is enabled, the progressbar of Copy/Move/Delete opera‐
       tions is always grown form left to right. If disabled, the growing direction  of  progressbar
       follows  to  direction  of  Copy/Move/Delete operation: from left panel to right one and vice
       versa. Enabled by default.

       _Mkdir_ _autoname._  When you press F7 to create a new directory, the input line in popup  dialog
       will be filled by name of current file or directory in active panel.  Disabled by default.

       _Preallocate_  _space._  Preallocate space for whole target file, if possible, before copy opera‐
       tion.  Disabled by default.

### Esc key mode.

       By default, Midnight Commander treats the Esc key as a key  prefix.   Therefore,  you  should
       press  Esc  code  twice to exit a dialog. But there is a possibility to use a single press of
       Esc key for that action.

       _Single_ _press._  By default this option is disabled. If you'll enable it, the Esc key will  act
       as  a  prefix  key  for set up time interval (see _Timeout_ option below), and if no extra keys
       have arrived, then the Esc key is interpreted as a cancel key (Esc Esc).

       _Timeout._  This options is used to setup the time interval (in microseconds) for single  press
       of  Esc key. By default, this interval is one second (1000000 microseconds). Also the timeout
       can be set via KEYBOARD_KEY_TIMEOUT_US environment variable (also in microseconds), which has
       higher priority than Timeout option value.

### Pause after run

       After executing your commands, Midnight Commander can pause, so that you can examine the out‐
       put of the command.  There are three possible settings for this variable:

       _Never._  Means that you do not want to see the output of your command.  If you are  using  the
       Linux  or  FreeBSD  console or an xterm, you will be able to see the output of the command by
       typing C-o.

       _On_ _dumb_ _terminals._  You will get the pause message on terminals that are not capable of show‐
       ing  the  output of the last command executed (any terminal that is not an xterm or the Linux
       console).

       _Always._  The program will pause after executing all of your commands.

### Other options

       _Use_ _internal_ _editor._  If this option is enabled, the built-in file editor  is  used  to  edit
       files.  If the option is disabled, the editor specified in the **EDITOR** environment variable is
       used.  If no editor is specified, **vi** is used.  See the section on the internal file editor.

       _Use_ _internal_ _viewer._  If this option is enabled, the built-in file viewer  is  used  to  view
       files.  If  the  option is disabled, the pager specified in the **PAGER** environment variable is
       used.  If no pager is specified, the **view** command is used.  See the section on  the  internal
       file viewer.

       _Ask_ _new_ _file_ _name._  If this option is enabled, file name is asked before open new file in ed‐
       itor.

       _Auto_ _menus._  If this option is enabled, the user menu will be invoked at startup.  Useful for
       building menus for non-unixers.

       _Drop_  _down_ _menus._  When this option is enabled, the pull down menus will be activated as soon
       as you press the F9 key. Otherwise, you will only get the menu title, and you  will  have  to
       activate  the  menu  either with the arrow keys or with the hotkeys. It is recommended if you
       are using hotkeys.

       _Shell_ _Patterns._  By default the Select, Unselect and Filter commands will use shell-like reg‐
       ular  expressions.  The  following  conversions are performed to achieve this: the '*' is re‐
       placed by '.*' (zero or more characters); the '?'  is replaced by '.' (exactly one character)
       and  '.'  by the literal dot. If the option is disabled, then the regular expressions are the
       ones described in [ed(1)](https://www.chedong.com/phpMan.php/man/ed/1/markdown).

       _Complete:_ _show_ _all._  By default, Midnight Commander pops up all possible completions  if  the
       completion is ambiguous only when you press **Alt-Tab** for the second time.  For the first time,
       it just completes as much as possible and beeps in the case of ambiguity.  Enable this option
       if you want to see all possible completions even after pressing **Alt-Tab** the first time.

       _Rotating_  _dash._   If  this option is enabled, the Midnight Commander shows a rotating dash in
       the upper right corner as a work in progress indicator.

       _Cd_ _follows_ _links._  This option, if set, causes Midnight Commander to follow the logical chain
       of directories when changing current directory either in the panels, or using the cd command.
       This is the default behavior of bash. When unset, Midnight Commander follows the real  direc‐
       tory structure, so cd .. if you've entered that directory through a link will move you to the
       current directory's real parent and not to the directory where the link was present.

       _Safe_ _delete._  If this option is enabled, deleting files and directory hotlist  entries  unin‐
       tentionally  becomes  more  difficult.  The default selection in the confirmation dialogs for
       deletion changes from **Yes** to **No**.  This option is disabled by default.

       _Safe_ _overwrite._  If this option is enabled, overwriting files  unintentionally  becomes  more
       difficult.   The  default  selection in the overwrite confirmation dialog changes from **Yes** to
       **No**.  This option is disabled by default.

       _Auto_ _save_ _setup._  If this option is enabled, when you exit Midnight  Commander,  the  config‐
       urable options of Midnight Commander are saved in the ~/.config/mc/ini file.

### Layout
       The layout dialog gives you a possibility to change the general layout of screen. The options
       in this dialog are divided into several groups: "Panel split", "Console  output"  and  "Other
       options".

### Panel split

       The rest of the screen area is used for the two directory panels. You can specify whether the
       area is split to the panels in _Vertical_ or _Horizontal_ direction. Panel layout can be  changed
       using Alt-, (Alt-comma) shortcut.

       _Equal_  _split._   By default, panels have equal sizes. Using this option you can specify an un‐
       equal split.

### Console output

       On the Linux or FreeBSD console you can specify how many lines are shown in the  output  win‐
       dow. This option is available if Midnight Commander runs on native console only.

### Other options

       _Menu_  _bar_  _visible._  If enabled, main menu of Midnight Commander is always visible on the top
       row of screen above panels. Enabled by default.

       _Command_ _prompt._  If enabled, command line is available. Enabled by default.

       _Keybar_ _visible._  If enabled, 10 labels associated with F1-F10 keys are located at the  bottom
       row of screen. Enabled by default.

       _Hintbar_  _visible._   If  enabled,  the one-line hints are visible below panels. Enabled by de‐
       fault.

       _XTerm_ _window_ _title._  When run in a terminal emulator for X11,  Midnight  Commander  sets  the
       terminal  window  title  to  the current working directory and updates it when necessary.  If
       your terminal emulator is broken and you see some incorrect output on startup  and  directory
       change, turn off this option.  Enabled by default.

       _Show_  _free_  _space._  If enabled, free space and total space of current file system is shown at
       the bottom frame of panel. Enabled by default.

### Panel options
### Main panel options

       _Show_ _mini-status._  If enabled, one line of status information about  the  currently  selected
       item is shown at the bottom of the panels. Enabled by default.

       _Use_  _SI_ _size_ _units._  If this option is enabled, Midnight Commander will use SI prefixes (base
       10) when displaying any byte sizes. If disabled (default), Midnight Commander  will  use  IEC
       prefixes (base 2).

       _Mix_  _all_  _files._   If  this  option is enabled, all files and directories are shown mixed to‐
       gether.  If the option is disabled (default), directories  (and  links  to  directories)  are
       shown at the beginning of the listing, and other files below.

       _Show_ _backup_ _files._  If enabled, Midnight Commander will show files ending with a tilde.  Oth‐
       erwise, they won't be shown (like GNU's ls option -B). Enabled by default.

       _Show_ _hidden_ _files._  If enabled, Midnight Commander will show all files that start with a  dot
       (like ls -a). Disabled by default.

       _Fast_ _directory_ _reload._  If this option is enabled, Midnight Commander will use a trick to de‐
       termine if the directory contents have changed.  The trick is to reload the directory only if
       the  i-node  of the directory has changed; this means that reloads only happen when files are
       created or deleted.  If what changes is the i-node for a file in  the  directory  (file  size
       changes, mode or owner changes, etc) the display is not updated.  In these cases, if you have
       the option on, you have to rescan the directory manually (with C-r). Disabled by default.

       _Mark_ _moves_ _down._  If enabled, the selection bar will move down when you mark a file (with In‐
       sert key). Enabled by default.

       _Reverse_  _files_  _only._  Allow revert selection of files only. Enabled by default.  If enabled,
       the reverse selection is applied to files only, not to directories.  The selection of  direc‐
       tories  is  untouched.  If off, the reverse selection is applied to files as well to directo‐
       ries: all unselected items become selected, and vice versa.

       _Simple_ _swap._  If both panels contain file listing, simple swap means that panels exchange its
       screen  positions:  left panel become right one, and vice versa. If this option is unchecked,
       file listing panels exchange its content keeping listing format and sort  options.  Unchecked
       by default.

       _Auto_  _save_  _panels_  _setup._   If this option is enabled, when you exit Midnight Commander, the
       current settings of panels are saved in the ~/.config/mc/panels.ini file.   Disabled  by  de‐
       fault.

### Navigation

       _Lynx-like_  _motion._   If  this option is enabled, you may use the arrows keys to automatically
       chdir if the current selection is a subdirectory and the shell command line is empty. By  de‐
       fault, this setting is off.

       _Page_  _scrolling._  If set (the default), panel will scroll by half the display when the cursor
       reaches the end or the beginning of the panel, otherwise it will just  scroll  a  file  at  a
       time.

       _Center_  _scrolling._  If set, panel will scroll when the cursor reaches the middle of the panel
       column, only hitting the top or bottom of the panel when actually on the first or last  file.
       This  behavior  applies  when  scrolling  one  file at a time, and does not apply to the page
       up/down keys.

       _Mouse_ _page_ _scrolling._  Controls whenever scrolling with the mouse wheel is done by  pages  or
       line by line on the panels.

### File highlight

       You  can  specify  whether  _permissions_ and _file_ _types_ should be highlighted with distinctive
       Colors.  If the permission highlighting is enabled, the parts of the _perm_  and  _mode_  display
       fields  which apply to the user running Midnight Commander are highlighted with the color de‐
       fined by the _selected_ keyword.  If the file type highlighting is enabled, file names are col‐
       ored  according to rules described in /etc/mc/filehighlight.ini file. See Filenames Highlight
       for more info.

### Quick search

       You can specify how the Quick search mode should work: case insensitively,  case  sensitively
       or be matched to the panel sort order: case sensitive or not.

### Confirmation
       In  this  dialog you configure the confirmation options for file deletion, overwriting files,
       execution by pressing enter, quitting the program, directory  hotlist  entries  deletion  and
       history cleanup.

### Appearance
       In this dialog you can select the skin to be used and enable shadow for dialogs and drop down
       menus.

       See the Skins section for technical details about the skin definition files.

       _Shadows._  If this option is enabled, all dialogs and drop down menus will have a shadow.

### Display bits
       This is used to configure the range of visible characters on the screen.  This setting may be
       7-bits  if  your terminal/curses supports only seven output bits, ISO-8859-1 displays all the
       characters in the ISO-8859-1 map and full 8 bits is for those terminals that can display full
       8 bit characters.

### Learn keys
       This  dialog  allows  you  to test and redefine functional keys, cursor arrows and some other
       keys to make them work properly on your terminal.  They  often  don't,  since  many  terminal
       databases are incomplete or broken.

       You  can move around with the Tab key and with the vi moving keys ('h' left, 'j' down, 'k' up
       and 'l' right).  Once you press any cursor movement key and it is  recognized,  you  can  use
       that key as well.

       You  can  test keys just by pressing each of them.  When you press a key and it is recognized
       properly, OK should appear next to the name of that key.  Once a key is marked OK  it  starts
       working as usually, e.g. F1 pressed the first time will just check that the F1 key works, but
       after that it will show help.  The same applies to the arrow keys.  The  Tab  key  should  be
       working always.

       If  some  keys do not work properly then you won't see OK appear after pressing one of these.
       Then you may want to redefine it.  Do it by pressing the button with the  name  of  that  key
       (either  by  the  mouse  or by Enter or Space after selecting the button with Tab or arrows).
       Then a message box will appear asking you to press that key.  Do it and wait until  the  mes‐
       sage box disappears.  If you want to abort, just press Escape once and wait.

       When  you finish with all the keys, you can Save them.  The definitions for the keys you have
       redefined will be written into the [terminal:TERM]  section  of  your  ~/.config/mc/ini  file
       (where TERM is the name of your current terminal).  The definitions of the keys that were al‐
       ready working properly are not saved.

### Virtual FS
       This option gives you control over the settings of the Virtual File System.

       Midnight Commander keeps in memory the information related to some of the virtual  file  sys‐
       tems  to speed up the access to the files in the file system (for example, directory listings
       fetched from FTP servers).

       Also, in order to access the contents  of  compressed  files  (for  example,  compressed  tar
       files), Midnight Commander needs to create temporary uncompressed files on your disk.

       Since  both  the information in memory and the temporary files on disk take up resources, you
       may want to tune the parameters of the cached information to decrease your resource usage  or
       to maximize the speed of access to frequently used file systems.

       Because  of  the  format of the tar archives, the _Tar_ _filesystem_ needs to read the whole file
       just to load the file entries.  Since most tar files are usually kept compressed  (plain  tar
       files  are species in extinction), the tar file system has to uncompress the file on the disk
       in a temporary location and then access the uncompressed file as a regular tar file.

       Now, since we all love to browse files and tar files all over the disk, it's common that  you
       will leave a tar file and then re-enter it later.  Since decompression is slow, Midnight Com‐
       mander will cache the information in memory for a limited time.  When  the  timeout  expires,
       all  the  resources associated with the file system are released.  The default timeout is set
       to one minute.

       The FTP File System (ftpfs) allows you to browse directories on remote FTP servers.   It  has
       several options.

       _ftp_  _anonymous_  _password_  is the password used when you login as "anonymous".  Some sites re‐
       quire a valid e-mail address.  On the other hand, you probably don't want to give  your  real
       e-mail address to untrusted sites, especially if you are not using spam filtering.

       ftpfs  keeps the directory listing it fetches from a FTP server in a cache.  The cache expire
       time is configurable with the _ftpfs_ _directory_ _cache_ _timeout_ option.  A low value for this op‐
       tion may slow down every operation on the ftpfs because every operation would require sending
       a request to the FTP server.

       You can define an FTP proxy host for doing FTP.  Note that most modern  firewalls  are  fully
       transparent at least for passive FTP (see below), so FTP proxies are considered obsolete.

       If _Always_ _use_ _ftp_ _proxy_ is not set, you can use the exclamation sign to enable proxy for cer‐
       tain hosts.  See FTP File System for examples.

       If this option is set, the program will do two things:  consult  the  /usr/lib/mc/mc.no_proxy
       file  for  lines containing host names that are local (if the host name starts with a dot, it
       is assumed to be a domain) and to assume that any hostnames without dots in their  names  are
       directly accessible.  All other hosts will be accessed through the specified FTP proxy.

       You  can  enable  using _~/.netrc_ file, which keeps login names and passwords for ftp servers.
       See netrc (5) for the description of the .netrc format.

       _Use_ _passive_ _mode_ enables using FTP passive mode, when the connection  for  data  transfer  is
       initiated  by  the  client, not by the server.  This option is recommended and enabled by de‐
       fault.  If this option is turned off, the data connection is initiated by the  server.   This
       may not work with some firewalls.

### Save Setup
       At  startup,  Midnight  Commander  tries  to load initialization information from the ~/.con‐
       fig/mc/ini file.  If this file doesn't exist, the system-wide file **/etc/mc/mc.ini** is used. If
       this  file  doesn't  exist,  the  system-wide file **/usr/share/mc/mc.ini** is used. If this file
       doesn't exist, MC uses the default settings.

       The _Save_ _Setup_ command creates the ~/.config/mc/ini file by saving the  current  settings  of
       the Left, Right and Options menus.

       If you activate the _auto_ _save_ _setup_ option, MC will always save the current settings when ex‐
       iting.

       There also exist settings which can't be changed from the menus. To change these settings you
       have  to  edit  the setup file with your favorite editor. See the section on Special Settings
       for more information.


### Executing operating system commands
       You may execute commands by typing them directly in Midnight Commander's input  line,  or  by
       selecting  the  program  you  want to execute with the selection bar in one of the panels and
       hitting Enter.

       If you press Enter over a file that is not executable, Midnight Commander checks  the  exten‐
       sion of the selected file against the extensions in the Extensions File.  If a match is found
       then the code associated with that extension is executed. A very simple macro expansion takes
       place before executing the command.

### The cd internal command
       The  _cd_  command  is interpreted by Midnight Commander, it is not passed to the command shell
       for execution.  Thus it may not handle all of the nice macro expansion and substitution  that
       your shell does, although it does some of them:

       _Tilde_  _substitution._   The  (~) will be substituted with your home directory, if you append a
       username after the tilde, then it will be substituted with the login directory of the  speci‐
       fied user.

       For  example, ~guest is the home directory for the user guest, while ~/guest is the directory
       guest in your home directory.

       _Previous_ _directory._  You can jump to the directory you were previously by using  the  special
       directory name '-' like this: **cd** **-**

       _CDPATH_  _directories._   If the directory specified to the **cd** command is not in the current di‐
       rectory, then Midnight Commander uses the value in the environment variable **CDPATH** to  search
       for the directory in any of the named directories.

       For example you could set your **CDPATH** variable to ~/src:/usr/src, allowing you to change your
       directory to any of the directories inside the ~/src and /usr/src directories, from any place
       in  the  file  system  by  using  its  relative  name (for example cd linux could take you to
       /usr/src/linux).

### Macro Substitution
       When accessing a user menu, or executing an extension dependent command, or running a command
       from the command line input, a simple macro substitution takes place.

       The macros are:

       _%i_     The indent of blank space, equal the cursor column position.  For edit menu only.

       _%y_     The syntax type of current file. For edit menu only.

       _%k_     The block file name.

       _%e_     The error file name.

       _%m_     The current menu name.

       _%f_ and _%p_
              In  file  manager  user menu: the current file name in selected panel.  In mcedit user
              menu: the name of opened file.

       _%x_     The extension of current file name.

       _%b_     The current file name without extension.

       _%d_     The current directory name.

       _%F_     The current file in the unselected panel.

       _%D_     The directory name of the unselected panel.

       _%t_     The currently tagged files.

       _%T_     The tagged files in the unselected panel.

       _%u_ and _%U_
              Similar to the %t and %T macros, but in addition the files are untagged.  You can  use
              this  macro  only  once per menu file entry or extension file entry, because next time
              there will be no tagged files.

       _%s_ and _%S_
              The selected files: The tagged files if there are any. Otherwise the current file.

       _%cd_    This is a special macro that is used to change the current directory to the  directory
              specified  in front of it.  This is used primarily as an interface to the Virtual File
              System.

       _%view_  This macro is used to invoke the internal viewer.  This macro can be  used  alone,  or
              with  arguments.   If you pass any arguments to this macro, they should be enclosed in
              brackets.

              The arguments are: _ascii_ to force the viewer into ascii mode; _hex_ to force the  viewer
              into  hex  mode; _nroff_ to tell the viewer that it should interpret the bold and under‐
              line sequences of nroff; _unformatted_ to tell the viewer to not  interpret  nroff  com‐
              mands for making the text bold or underlined.

       _%%_     The % character

       _%{some_ _text}_
              Prompt  for  the substitution. An input box is shown and the text inside the braces is
              used as a prompt. The macro is substituted by the text typed by the user. The user can
              press Esc or F10 to cancel. This macro doesn't work on the command line yet.

       _%var{ENV:default}_
              If  environment  variable  _ENV_  is  unset, the _default_ is substituted.  Otherwise, the
              value of _ENV_ is substituted.

### The subshell support
       The subshell support is a compile time option, that works with the shells: bash, ash (BusyBox
       and Debian), tcsh, zsh and fish.

       When  the subshell support is active, Midnight Commander will spawn a concurrent copy of your
       shell (the one defined in the **SHELL** variable and if it is not defined, then the  one  in  the
       /etc/passwd  file) and run it in a pseudo terminal, instead of invoking a new shell each time
       you execute a command, the command will be passed to the subshell as if  you  had  typed  it.
       This  also  allows  you  to  change the environment variables, use shell functions and define
       aliases that are valid until you quit Midnight Commander.

       **bash** users may specify startup commands in ~/.local/share/mc/bashrc (fallback ~/.bashrc)  and
       special keyboard maps in ~/.local/share/mc/inputrc (fallback ~/.inputrc).

       **ash/dash**  users  (BusyBox  or Debian) may specify startup commands in ~/.local/share/mc/ashrc
       (fallback ~/.profile).

       **zsh** users may specify startup commands in ~/.local/share/mc/.zshrc (fallback ~/.zshrc).

       **tcsh,** **fish** users cannot specify mc-specific startup commands at present. They have to rely on
       shell-specific startup files.

       The following paragraphs are relevant only when the subshell support is active:

       You can suspend applications at any time with the sequence C-o and jump back to Midnight Com‐
       mander, if you interrupt an application, you will not be able to run other external  commands
       until you quit the application you interrupted.

       The  basic  prompt displayed by Midnight Commander is of the form "user@host:current_path$ ".
       When using a capable shell, like Bash, the prompt displayed by Midnight Commander will be the
       same prompt that you are currently using in your shell.

       (There's  a  known  problem when using fish: the prompt is displayed only in full screen mode
       (Ctrl-o), not when the panels are visible.)

       The OPTIONS section has more information on how you can control subshell usage (-U/-u).  Fur‐
       thermore,  to  set  a  specific  subshell different from your current SHELL variable or login
       shell defined in /etc/passwd, you may call MC like this: **SHELL=/bin/myshell** **mc**

## Chmod
       The Chmod window is used to change the attribute bits in a group of  files  and  directories.
       It can be invoked with the C-x c key combination.

       The Chmod window has two parts - _Permissions_ and _File_.

       In  the  File  section are displayed the name of the file or directory and its permissions in
       octal form, as well as its owner and group.

       In the Permissions section there is a set of check buttons which correspond to the  file  at‐
       tribute  bits.   As  you change the attribute bits, you can see the octal value change in the
       File section.

       To move between the widgets (buttons and check buttons) use the _arrow_ _keys_ or  the  _Tab_  key.
       To  change  the state of the check buttons or to select a button use _Space._  You can also use
       the hotkeys on the buttons to quickly activate them.  Hotkeys are shown as  highlighted  let‐
       ters on the buttons.

       To set the attribute bits, use the Enter key.

       When working with a group of files or directories, you just click on the bits you want to set
       or clear.  Once you have selected the bits you want to change, you select one of  the  action
       buttons (Set marked or Clear marked).

       Finally,  to set the attributes exactly to those specified, you can use the **[Set** **all]** button,
       which will act on all the tagged files.

       **[Marked** **all]** set only marked attributes to all selected files

       **[Set** **marked]** set marked bits in attributes of all selected files

       **[Clean** **marked]** clear marked bits in attributes of all selected files

       **[Set]** set the attributes of one file

       **[Cancel]** cancel the Chmod command

## Chown
       The Chown command is used to change the owner/group of a file. The hot key for  this  command
       is C-x o.

### Advanced Chown
       The  Advanced  Chown command is the Chmod and Chown command combined into one window. You can
       change the permissions and owner/group of files at once.

## Chattr
       The Chattr window is used to change the attributes of a group of files and directories  on  a
       Linux file system. It can be invoked with the C-x e key combination.

       Not all attributes are supported or utilized by all filesystems.  List of available attribute
       flags is represented as a set of check buttons which correspond to the attribute  flags  (see
       [**chattr(1)](https://www.chedong.com/phpMan.php/man/chattr/1/markdown)**  for  details).  As  you change the attribute flags, you can see the symbolic value
       change below file name.

       To move between the widgets (buttons and check buttons) use the _arrow_ _keys_ or the _Tab_ key. To
       change the state of the check buttons or to select a button use **Space**.

       To set the attributes, use the Enter key.

       When  working  with  a group of files or directories, you just click on the flags you want to
       set or clear. Once you have selected the flags you want to change, you select one of the  ac‐
       tion buttons (Set marked or Clear marked).

       Finally,  to set the attributes exactly to those specified, you can use the **[Set** **all]** button,
       which will act on all the tagged files.

       **[Marked** **all]** set only marked attributes to all selected files.

       **[Set** **marked]** set marked flags in attributes of all selected files.

       **[Clean** **marked]** clear marked flags in attributes of all selected files.

       **[Set]** set the attributes of one file.

       **[Cancel]** cancel the Chattr command.

### File Operations
       When you copy, move or delete files, Midnight Commander shows the file operations dialog.  It
       shows  the  files currently being processed and uses up to three progress bars.  The file bar
       indicates the percentage of the current file that has been processed so far.  The  count  bar
       shows how many of the tagged files have been handled.  The bytes bar indicates the percentage
       of the total size of the tagged files that has been handled.  If the verbose option  is  off,
       the file and bytes bars are not shown.

       There  are  two  buttons  at the bottom of the dialog. Pressing the Skip button will skip the
       rest of the current file. Pressing the Abort button will abort the whole operation, the  rest
       of the files are skipped.

       There are three other dialogs which you can run into during the file operations.

       The  error  dialog informs about error conditions and has three choices.  Normally you select
       either the Skip button to skip the file or the Abort button  to  abort  the  operation  alto‐
       gether.  You can also select the Retry button if you fixed the problem from another terminal.

       The replace dialog is shown when you attempt to copy or move a file on the top of an existing
       file.  The dialog shows the dates and sizes of the both files.  Press the Yes button to over‐
       write  the  file,  the No button to skip the file, the All button to overwrite all the files,
       the None button to never overwrite and the Update button to overwrite if the source  file  is
       newer than the target file.  You can abort the whole operation by pressing the Abort button.

       The  recursive  delete dialog is shown when you try to delete a directory which is not empty.
       Press the Yes button to delete the directory recursively, the No button to  skip  the  direc‐
       tory,  the  All  button  to  delete  all  the directories and the None button to skip all the
       non-empty directories.  You can abort the whole operation by pressing the Abort  button.   If
       you  selected the Yes or All button you will be asked for a confirmation.  Type "yes" only if
       you are really sure you want to do the recursive delete.

       If you have tagged files and perform an operation on them only the files on which the  opera‐
       tion succeeded are untagged. Failed and skipped files are left tagged.

### Mask Copy/Rename
       The  copy/move operations let you translate the names of files in an easy way.  To do it, you
       have to specify the correct source mask and usually in the trailing part of  the  destination
       specify  some wildcards.  All the files matching the source mask are copied/renamed according
       to the target mask.  If there are tagged files, only the tagged  files  matching  the  source
       mask are renamed.

       There are other options which you can set:

### Follow links

       determines  whether  make  the symlinks and hardlinks in the source directory (recursively in
       subdirectories) new links in the target directory or whether would you  like  to  copy  their
       content.

### Dive into subdirs

       determines  the  behavior when the source directory is about to be copied, but the target di‐
       rectory already exists.  The default action is to copy the contents of the  source  directory
       into  the  target directory.  Enabling this option causes copying the source directory itself
       into the target directory.

       For example, you want to copy directory _/foo_ containing file _bar_ to _/bla/foo_, which is an al‐
       ready  existing  directory.  Normally (when **Dive** **into** **subdirs** is not set), mc would copy file
       _/foo/bar_ into the file _/bla/foo/bar_.  By enabling this option the _/bla/foo/foo_ directory will
       be created, and _/foo/bar_ will be copied into _/bla/foo/foo/bar_.

### Preserve attributes

       determines  whether  to preserve the permissions, timestamps and (if you are root) the owner‐
       ship of the original files.  If this option is not set, the current value of the  umask  will
       be respected.

### Use shell patterns

       When  this  option  is on you can use the '*' and '?' wildcards in the source mask. They work
       like they do in the shell. In the target mask only the '*' and '\<digit>' wildcards  are  al‐
       lowed.  The  first '*' wildcard in the target mask corresponds to the first wildcard group in
       the source mask, the second '*' corresponds to the second group and so on.  The '\1' wildcard
       corresponds  to the first wildcard group in the source mask, the '\2' wildcard corresponds to
       the second group and so on all the way up to '\9'.  The '\0' wildcard is the  whole  filename
       of the source file.

       Two examples:

       If  the  source mask is "*.tar.gz", the destination is "/bla/*.tgz" and the file to be copied
       is "foo.tar.gz", the copy will be "foo.tgz" in "/bla".

       Suppose you want to swap basename and extension so that "file.c" would become "c.file" and so
       on.  The source mask for this is "*.*" and the destination is "\2.\1".

### Use shell patterns off

       When  the shell patterns option is off the MC doesn't do automatic grouping anymore. You must
       use '\(...\)' expressions in the source mask to specify meaning for the wildcards in the tar‐
       get  mask.  This  is  more flexible but also requires more typing. Otherwise target masks are
       similar to the situation when the shell patterns option is on.

       Two examples:

       If the source mask is "^\(.*\)\.tar\.gz$", the destination is "/bla/*.tgz" and the file to be
       copied is "foo.tar.gz", the copy will be "/bla/foo.tgz".

       Let's  suppose  you want to swap basename and extension so that "file.c" will become "c.file"
       and so on. The source mask for this is "^\(.*\)\.\(.*\)$" and the destination is "\2.\1".

### Case Conversions

       You can also change the case of the filenames.  If you use '\u' or '\l' in the  target  mask,
       the next character will be converted to uppercase or lowercase correspondingly.

       If  you  use '\U' or '\L' in the target mask, the next characters will be converted to upper‐
       case or lowercase correspondingly up to the next '\E' or next '\U', '\L' or the  end  of  the
       file name.

       The '\u' and '\l' are stronger than '\U' and '\L'.

       For  example,  if  the  source mask is '*' ( _Use_ _shell_ _patterns_ on) or '^\(.*\)$' ( _Use_ _shell_
       _patterns_ off) and the target mask is '\L\u*' the file names will be converted to have initial
       upper case and otherwise lower case.

       You  can  also  use '\' as a quote character. For example, '\\' is a backslash and '\*' is an
       asterisk.

### Stable symlinks

       commands Midnight Commander, that it should change symlinks in the target,  so  that  they'll
       point  to the same location as it did before. With absolute symbolic links this does nothing,
       but if you have a relative one, it will recompute its value, adding necessary ../  and  other
       directory parts and making the value as short as possible (most modern filesystems keep short
       symlinks inside inodes and thus don't waste much disk space).


### Select/Unselect Files
       The dialog of group of files and directories selection or uselection.  The input  line  allow
       enter the regular expression of filenames that will be selected/unselected.

       When  _Files_ _only_ checkbox is on, only files will be selected.  If _Files_ _only_ is off, as files
       as directories will be selected.  When _Shell_ _Patterns_ checkbox is on, the regular  expression
       is much like the filename globbing in the shell (* standing for zero or more characters and ?
       standing for one character). If _Shell_ _Patterns_ is off, then the tagging of files is done with
       normal  regular  expressions  (see ed (1)). When _Case_ _sensitive_ checkbox is on, the selection
       will be case sensitive characters.  If _Case_ _sensitive_ is off, the case will be ignored.

### Internal Diff Viewer
       The mcdiff is a visual diff tool. You can compare two files and edit them in-place (diffs are
       updated  dynamically).  You  can  browse and view a working copy from popular version control
       systems (GIT, Subversion, etc).

       Following shortcuts are available in internal diff viewer of Midnight Commander.

       **F1**     Invoke the built-in hypertext help viewer.

       **F2**     Save modified files.

       **F4**     Edit file of the left panel in the internal editor.

       **F14**    Edit file of the right panel in the internal editor.

       **F5**     Merge the current hunk. Only the current hunk will be merged.

       **F7**     Start search.

       **F17**    Continue search.

### F10, Esc, q
              Exit from diff viewer.

### Alt-s, s
              Toggle show of hunk status.

### Alt-n, l
              Toggle show of line numbers.

       **f**      Maximize left panel.

       **=**      Make panels equal in width.

       **>**      Reduce the size of the right panel.

       **<**      Reduce the size of the left panel.

       **c**      Toggle show of trailing carriage return (CR) symbol as ^M.

### 2, 3, 4, 8
              Set tabulation size

       **C-u**    Swap contents of diff panels.

       **C-r**    Refresh the screen.

       **C-o**    Switch to the subshell and show the command screen.

### Enter, Space, n
              Find next diff hunk.

### Backspace, p
              Find previous diff hunk.

       **g**      Go to line.

       **Down**   Scroll one line forward.

       **Up**     Scroll one line backward.

       **PageUp** Move one page up.

### PageDown
              Mves one page down.

### Home, A1
              Moves to the line beginning.

       **End**    Moves to the line end.

       **C-Home** Move to the file beginning.

### C-End, C1
              Move to the file end.

### Internal File Viewer
       The internal file viewer provides two display modes: ASCII and hex.  To toggle between modes,
       use the F4 key.

       The  viewer  will try to use the best method provided by your system or the file type to dis‐
       play the information.  Some character sequences, which appear most often in preformatted man‐
       ual pages, are displayed bold and underlined, thus making a pretty display of your files.

       When  in  hex mode, the search function accepts text in quotes and constant numbers.  Text in
       quotes is matched exactly after removing the quotes.  Each number matches one byte.  You  can
       mix quoted text with constants like this:

       "String" 34 0xBB 012 "more text"

       Numbers are always interpreted in hex. In the example above, "34" is interpreted as 0x34. The
       prefix "0x" isn't really needed: we could type "BB" instead of "0xBB". And  "012"  is  inter‐
       preted as 0x12, not as an octal number.

       Here is a listing of the actions associated with each key that the Midnight Commander handles
       in the internal file viewer.

       **F1**     Invoke the built-in hypertext help viewer.

       **F2**     Toggle the wrap mode.

       **F4**     Toggle the hex mode.

       **F5**     Goto. You can specify a line number, offset or percentage of  file  size  of  position
              that you want to view.

### F7, /, ?
              Start  search.  These keys call the dialog window that allows you to set up the search
              options. If key is ? the "Backwards" option is on.

       **C-s**    Continue forward search.

       **C-r**    Continue reverse search.

       **F17,** **n** Continue search in the chosen direction.

       **N**      Temporary change the search direction: backwards if forward search is chosen, and vice
              versa.

       **F8**     Toggle  Raw/Parsed  mode:  This will show the file as found on disk or if a processing
              filter has been specified in the mc.ext file, then the output from the filter. Current
              mode  is always the other than written on the button label, since on the button is the
              mode which you enter by that key.

       **F9**     Toggle the format/unformat mode: when format mode is on the viewer will interpret some
              string sequences to show bold and underline with different colors. Also, on button la‐
              bel is the other mode than current.

### F10, Esc.
              Exit the internal file viewer.

### PageDown, space, C-v.
              Scroll one page forward.

### PageUp, Alt-v, C-b, Backspace.
              Scroll one page backward.

       **Down**   Scroll one line forward.

       **Up**     Scroll one line backward.

       **C-l**    Refresh the screen.

       **C-o**    Switch to the subshell and show the command screen.

       **[n]** **m**  Set the mark n.

       **[n]** **r**  Jump to the mark n.

       **C-f**    Jump to the next file.

       **C-b**    Jump to the previous file.

       **Alt-r**  Toggle the ruler.

       **Alt-e**  to change charset of displayed text may use Alt-e (M-e).  Recoding is  made  from  se‐
              lected  codepage  into  system  codepage.  To  cancel the recoding you may select "<No
              translation>" in charset selection dialog.

       It's possible to instruct the file viewer how to display a file, look at the  Edit  Extension
       File section


### Internal File Editor
       The  internal  file editor is a full-featured full screen editor.  It can edit files up to 64
       megabytes.  It is possible to edit binary files.  The internal file editor is  invoked  using
       **F4** if the _use_internal_edit_ option is set in the initialization file.

       The  features  it  presently  supports are: block copy, move, delete, cut, paste; key for key
       undo; pull-down menus; file insertion; macro commands; regular expression search and replace;
       S-arrow text highlighting (if supported by the terminal); insert-overwrite toggle; word wrap;
       autoindent; tunable tab size; syntax highlighting for various file types; and  an  option  to
       pipe text blocks through shell commands like indent and ispell.

       Sections:

              Options of editor in ini-file

       The  editor is very easy to use and requires no tutoring. To see what keys do what, just con‐
       sult the appropriate pull-down menu. Other keys are: Shift movement keys do  text  highlight‐
       ing.   **C-Ins** copies to the file **mcedit.clip** and **S-Ins** pastes from mcedit.clip.  **S-Del** cuts to
       **mcedit.clip**, and **C-Del** deletes highlighted text. Mouse highlighting also works, and  you  can
       override  the  mouse  as  usual by holding down the shift key while dragging the mouse to let
       normal terminal mouse highlighting work.

       To define a macro, press **C-R** and then type out the key strokes you want to be executed. Press
       **C-R**  again  when finished. You can then assign the macro to any key you like by pressing that
       key. The macro is executed when you press **C-A** and then the assigned key. The  macro  is  also
       executed  if  you press Meta, Ctrl, or Esc and the assigned key, provided that the key is not
       used for any other function. Once defined,  the  macro  commands  go  into  the  file  **~/.lo**‐‐
       **cal/share/mc/mcedit/mcedit.macros**  You can delete a macro by deleting the appropriate line in
       this file.

       To change charset of displayed text may use Alt-e (M-e).   Recoding  is  made  from  selected
       codepage  into  system  codepage. To cancel the recoding you may select "<No translation>" in
       charset selection dialog.

       **F19** will format the currently highlighted block (plain text or C or  C++  code  or  another).
       This  is  controlled  by  the  file  **/usr/share/mc/edit.indent.rc**  which  is copied to **~/.lo**‐‐
       **cal/share/mc/mcedit/edit.indent.rc** in your home directory the first time you use it.

       The editor also displays non-us characters (160+). When editing binary files, you should  set
       **display** **bits** to 7 bits in the options menu to keep the spacing clean.


### Options of editor in ini-file
       Some  editor  options of ini-file are described in this section.  Options are placed in [Mid‐
       night-Commander] section

       _editor_wordcompletion_collect_entire_file_
              Search autocomplete candidates in entire of file or just from begin of file to  cursor
              position (0)


### Screen selector
       Midnight  Commander  supports  running many internal modules (such as editor, viewer and diff
       viewer) simultaneously and switching between them without closing open files.  Using  several
       file managers at a time, however, is not currently supported.

       Let's  call  each  of these modules a screen. There are three ways to switch between screens,
       using one of these global shortcuts:

       **Alt-}**  switch to the next screen;

       **Alt-{**  switch to the previous screen;

       **Alt-`**  open a dialog window with the list of currently open screens (or use the "Screen list"
              menu item).

## Completion
       Let Midnight Commander type for you.

       Attempt  to  perform  completion on the text before current position.  MC attempts completion
       treating the text as variable (if the text begins with **$**), username (if the text begins  with
       **~**),  hostname  (if  the text begins with **@**) or command (if you are on the command line in the
       position where you might type a command, possible completions  then  include  shell  reserved
       words  and shell built-in commands as well) in turn.  If none of these matches, filename com‐
       pletion is attempted.

       Filename, username, variable and hostname completion works on all input lines,  command  com‐
       pletion  is  command line specific.  If the completion is ambiguous (there are more different
       possibilities), MC beeps and the following action depends on the  setting  of  the  Complete:
       show  all  option in the Configuration dialog.  If it is enabled, a list of all possibilities
       pops up next to the current position and you can select with the arrow  keys  and  **Enter**  the
       correct entry.  You can also type the first letters in which the possibilities differ to move
       to a subset of all possibilities and complete as much as  possible.   If  you  press  **Alt-Tab**
       again,  only  the subset will be shown in the listbox, otherwise the first item which matches
       all the previous characters will be highlighted.  As soon as there is  no  ambiguity,  dialog
       disappears,  but you can hide it by canceling keys **Esc**, **F10** and left and right arrow keys. If
       Complete: show all is disabled, the dialog pops up only if you press **Alt-Tab** for  the  second
       time, for the first time MC just beeps.

       Apply  escaping  of **?**, *****, and **&** symbols (as **\?**, **\***, and **\&**) in filenames to disallow use them
       as metasymbols in regular expressions when substitution is performed in the input line.


### Virtual File System
       Midnight Commander is provided with a code layer to access the file system; this  code  layer
       is  known  as the virtual file system switch.  The virtual file system switch allows Midnight
       Commander to manipulate files not located on the Unix file system.

       Currently, Midnight Commander is packaged with some Virtual File  Systems  (VFS):  the  _local_
       file  system,  used for accessing the regular Unix file system; the _ftpfs_, used to manipulate
       files on remote systems with the FTP protocol; the _tarfs_, used to  manipulate  tar  and  com‐
       pressed  tar  files; the _undelfs_, used to recover deleted files on ext2 file systems (the de‐
       fault file system for Linux systems), _fish_ (for manipulating  files  over  shell  connections
       such as rsh and ssh).  If the code was compiled with _sftpfs_ (for manipulating files over SFTP
       connections).  If the code was compiled with _smbfs_ support, you can manipulate files  on  re‐
       mote systems with the SMB (CIFS) protocol.

       A  generic _extfs_ (EXTernal virtual File System) is provided in order to easily expand VFS ca‐
       pabilities using scripts and external software.

       The VFS switch code will interpret all of the path names used and will forward  them  to  the
       correct  file system, the formats used for each one of the file systems is described later in
       their own section.

### FTP File System
       The FTP File System (ftpfs) allows you to manipulate files on remote machines.   To  actually
       use  it,  you can use the _FTP_ _link_ item in the menu or directly change your current directory
       using the _cd_ command to a path name that looks like this:

       _ftp://[!][user[:pass]@]machine[:port][remote-dir]_

       The _user_, _port_ and _remote-dir_ elements are optional.  If you specify the _user_  element,  Mid‐
       night  Commander  will login to the remote machine as that user, otherwise it will use anony‐
       mous login or the login name from the _~/.netrc_ file.  The optional _pass_ element is the  pass‐
       word  used  for  the  connection.  Using the password in the VFS directory name is not recom‐
       mended, because it can appear on the screen in clear text and can be saved to  the  directory
       history.

       To enable using FTP proxy, prepend **!**  (an exclamation sign) to the hostname.

       Examples:

           ftp://ftp.nuclecu.unam.mx/linux/local
           ftp://tsx-11.mit.edu/pub/linux/packages
           ftp://!behind.firewall.edu/pub
           ftp://<guest@remote-host.com>:40/pub
           ftp://miguel:xxx@server/pub

       Please check the Virtual File System dialog box for ftpfs options.

### Tar File System
       The  tar  file system provides you with read-only access to your tar files and compressed tar
       files by using the chdir command.  To change your directory to a tar file,  you  change  your
       current directory to the tar file by using the following syntax:

       _/filename.tar/utar://[dir-inside-tar]_

       The  mc.ext  file already provides a shortcut for tar files, this means that usually you just
       point to a tar file and press return to enter into the tar file, see the Edit Extension  File
       section for details on how this is done.

       Examples:

           mc-3.0.tar.gz/utar://mc-3.0/vfs
           /ftp/GCC/gcc-2.7.0.tar/utar://

       The latter specifies the full path of the tar archive.

### FIle transfer over SHell filesystem
       The  fish  file system is a network based file system that allows you to manipulate the files
       in a remote machine as if they were local. To use this, the other side has to either run fish
       server, or has to have bash-compatible shell.

       To connect to a remote machine, you just need to chdir into a special directory which name is
       in the following format:

       _sh://[user@]machine[:options]/[remote-dir]_

       The _user,_ _options_ and _remote-dir_ elements are optional.  If you  specify  the  _user_  element,
       Midnight  Commander  will  try to login on the remote machine as that user, otherwise it will
       use your login name.

       The available _options_ are:
         'C' - use compression;
         'r' - use rsh instead of ssh;
         port - specify the port used by remote server.
       If the _remote-dir_ element is present, your current directory on the remote  machine  will  be
       set to this one.

       Examples:

           sh://onlyrsh.mx:r/linux/local
           sh://<joe@want.compression.edu>:C/private
           sh://<joe@noncompressed.ssh.edu>/private
           sh://<joe@somehost.ssh.edu>:2222/private

### SFTP (SSH File Transfer Protocol) filesystem
       The  SFTP  file system is a network based file system that allows you to manipulate the files
       in a remote machine as if they were local.

       To connect to a remote machine, you just need to chdir into a special directory which name is
       in the following format:

       _sftp://[user@]machine:[port]/[remote-dir]_

       The  _user,_  _port_ and _remote-dir_ elements are optional.  If you specify the _user_ element, Mid‐
       night Commander will try to login on the remote machine as that user, otherwise it  will  use
       your  login name.  _port_ - specify the port used by remote server (22 by default).  If the _re__‐
       _mote-dir_ element is present, your current directory on the remote machine will be set to this
       one.

       Examples:

           sftp://onlyrsh.mx/linux/local
           sftp://joe:<password@want.compression.edu>/private
           sftp://<joe@noncompressed.ssh.edu>/private
           sftp://<joe@somehost.ssh.edu>:2222/private

       When   establishing   the   connection,   server   key  fingerprint  is  verified  using  the
       ~/.ssh/known_hosts file. If the host/key pair is not found or the host is found, but the  key
       doesn't  match, an appropriate message is shown.  There are three buttons in the message dia‐
       log:

       **[Yes]** add new host/key pair to the ~/.ssh/known_hosts file and continue.

       **[Ignore]** do not add new host/key pair to the ~/.ssh/known_hosts file, but continue  neverthe‐
       less (at you own risk).

       **[No]** abort connection.

### Undelete File System
       On Linux systems, if you asked configure to use the ext2fs undelete facilities, you will have
       the undelete file system available.  Recovery of deleted files is only available on ext2 file
       systems.  The undelete file system is just an interface to the ext2fs library to retrieve all
       of the deleted files names on an ext2fs and provides and to extract the selected files into a
       regular partition.

       To  use  this  file  system,  you have to chdir into the special file name formed by the "un‐
       del://" prefix and the file name where the actual file system resides.

       For example, to recover deleted files on the second partition  of  the  first  SCSI  disk  on
       Linux, you would use the following path name:

           undel://sda2

       It  may take a while for the undelfs to load the required information before you start brows‐
       ing files there.

### SMB File System
       The smbfs allows you to manipulate files on remote machines  with  SMB  (or  CIFS)  protocol.
       These  include  Windows for Workgroups, Windows 9x/ME/XP, Windows NT, Windows 2000 and Samba.
       To actually use it, you may try to use the panel command "SMB link..."  (accessible from  the
       menubar)  or  you  may directly change your current directory to it using the cd command to a
       path name that looks like this:

       _smb://[user@]machine[/service][/remote-dir]_

       The _user_, _service_ and _remote-dir_ elements are optional.  The _user_, _domain_ and _password_ can be
       specified in an input dialog.

       Examples:

           smb://machine/Share
           smb://other_machine
           smb://guest@machine/Public/Irlex

### EXTernal File System
       **extfs** allows you to integrate numerous features and file types into GNU Midnight Commander in
       an easy way, by writing scripts.

       Extfs filesystems can be divided into two categories:

       1. Stand-alone filesystems, which are not associated with any existing file.  They  represent
       certain  system-wide  data  as  a directory tree.  You can invoke them by typing _cd_ _fsname://_
       where fsname is an extfs short name (see below).  Examples of such filesystems include  audio
       (list audio tracks on the CD) or apt (list of all Debian packages in the system).

       For example, to list CD-Audio tracks on your CD-ROM drive, type

         cd audio://

       2.  'Archive' filesystems (like rpm, patchfs and more), which represent contents of a file as
       a directory tree.  It can consist of 'real' files compressed in an  archive  (urar,  rpm)  or
       virtual  files, like messages in a mailbox (mailfs) or parts of a patch (patchfs).  To access
       such filesystems _fsname://_ should be appended to the archive name.  Note that the archive it‐
       self can be on another vfs.

       For example, to list contents of a zip archive documents.zip type

         cd documents.zip/uzip://

       In  many  aspects, you could treat extfs like any other directory.  For instance, you can add
       it to the hotlist or change to it from directory history.  An important  limitation  is  that
       you cannot invoke shell commands inside extfs, just like any other non-local VFS.

       Common extfs scripts included with Midnight Commander are:

       **a**      access 'A:' DOS/Windows diskette (_cd_ _a://_).

       **apt**    front end to Debian's APT package management system (_cd_ _apt://_).

       **audio**  audio CD ripping and playing (_cd_ _audio://_ or _cd_ _device/audio://_).

       **bpp**    package of Bad Penguin GNU/Linux distribution (_cd_ _file.bpp/bpp://_).

       **deb**    package of Debian GNU/Linux distribution (_cd_ _file.deb/deb://_).

       **dpkg**   Debian GNU/Linux installed packages (_cd_ _deb://_).

       **hp48**   view and copy files to/from a HP48 calculator (_cd_ _hp48://_).

       **lslR**   browsing of lslR listings as found on many FTPs (_cd_ _filename/lslR://_).

       **mailfs** mbox-style mailbox files support (_cd_ _mailbox/mailfs://_).

### patchfs
              extfs to handle unified and context diffs (_cd_ _filename/patchfs://_).

       **rpm**    RPM package (_cd_ _filename/rpm://_).

       **rpms**   RPM database management (_cd_ _rpms://_).

### ulha, urar, uzip, uzoo, uar, uha
              archivers (_cd_ _archive/xxxx://_ where xxxx is one of: _ulha_, _urar_, _uzip_, _uzoo_, _uar_, _uha_).

       You could bind file type/extension to specified extfs as described in the Edit Extension File
       section.  Here is an example entry for Debian packages:

         regex/.deb$
                 Open=%cd %p/deb://

## Colors
       Midnight Commander will try to detect if your terminal  supports  color  using  the  terminal
       database  and your terminal name.  Sometimes it gets confused, so you may force color mode or
       disable color mode using the -c and -b flag respectively.

       If the program is compiled with the S-Lang screen manager instead of ncurses,  it  will  also
       check the variable **COLORTERM,** if it is set, it has the same effect as the -c flag.

       You may specify terminals that always force color mode by adding the _color_terminals_ variable
       to the Colors section of the initialization file.  This will prevent Midnight Commander  from
       trying to detect if your terminal supports color.  Example:

       [Colors]
       color_terminals=linux,xterm
       color_terminals=terminal-name1,terminal-name2...

       The  program  can be compiled with both ncurses and S-Lang, ncurses does not provide a way to
       force color mode: ncurses uses just the information in the terminal database.

       Midnight Commander provides a way to change the default colors.   Currently  the  colors  are
       configured  using  the  environment variable **MC**___**COLOR**___**TABLE** or the Colors section in the ini‐
       tialization file.

       In the Colors section, the default color map is loaded from the _base_color_ variable.  You can
       specify  an  alternate color map for a terminal by using the terminal name as the key in this
       section.  Example:

       [Colors]
       base_color=
       xterm=menu=magenta:marked=,magenta:markselect=,red

       The format for the color definition is:

         <keyword>=<fgcolor>,<bgcolor>,<attributes>:<keyword>=...

       The colors are optional, and the keywords are: normal, selected,  disabled,  marked,  markse‐
       lect,  errors, input, inputmark, inputunchanged, commandlinemark, reverse, gauge, header, in‐
       puthistory, commandhistory. Button bar colors are: bbarhotkey, bbarbutton. Status bar  color:
       statusbar.  Menu  colors  are: menunormal, menusel, menuhot, menuhotsel, menuinactive. Dialog
       colors are: dnormal, dfocus, dhotnormal, dhotfocus, dtitle. Error dialog colors are:  errdfo‐
       cus,  errdhotnormal, errdhotfocus, errdtitle.  Help colors are: helpnormal, helpitalic, help‐
       bold, helplink, helpslink, helptitle.  Viewer colors are:  viewnormal,  viewbold,  viewunder‐
       line,  viewselected. Editor colors are: editnormal, editbold, editmarked, editwhitespace, ed‐
       itlinestate. Popup menu colors are: pmenunormal, pmenusel, pmenutitle.

       _header_ determines the color of panel header, the line that contains column  titles  and  sort
       mode indicator.

       _input_ determines the color of input lines used in query dialogs.

       _gauge_  determines  the color of the filled part of the progress bar (gauge), which is used to
       show the user the progress of file operations, such as copying.

       _disabled_ determines the color of the widget that cannot be selected.

       The dialog boxes use the following colors: _dnormal_ is used for the normal text, _dfocus_ is the
       color  used for the currently selected component, _dhotnormal_ is the color used to differenti‐
       ate the hotkey color in normal components, whereas the _dhotfocus_ color is used for the  high‐
       lighted color in the currently selected component.

       Menus use the same scheme but uses the menunormal, menusel, menuhot, menuhotsel and menuinac‐
       tive tags instead.

       Help uses the following colors: _helpnormal_ is used for normal text, _helpitalic_  is  used  for
       text which is emphasized in italic in the manual page, _helpbold_ is used for text which is em‐
       phasized in bold in the manual page, _helplink_ is used for not selected hyperlinks  and  _help__‐
       _slink_ is used for selected hyperlink.

       Popup  menu  uses  following colors: _pmenunormal_ is used for non-selected menu items and as a
       main color of popup menu window, _pmenusel_ is used for selected menu item, _pmenutitle_ is  used
       for popup menu title.

       The  possible  colors  are:  black,  gray, red, brightred, green, brightgreen, brown, yellow,
       blue, brightblue, magenta, brightmagenta, cyan, brightcyan, lightgray and white. And there is
       a special keyword for transparent background. It is 'default'. The 'default' can only be used
       for background color. Another special keyword "base" means mc's main colors.  When 256 colors
       are  available,  they  can be specified either as color16 to color255, or as rgb000 to rgb555
       and gray0 to gray23. Example:

       [Colors]
       base_color=normal=white,default:marked=magenta,default

       Attributes can be any of bold, italic, underline, reverse and blink, appended by a plus  sign
       if  more than one are desired.  The special word "none" means no attributes, without attempt‐
       ing to fall back to base_color.  Example:

       menuhotsel=yellow;black;bold+underline


## Skins
       You can change the appearance of Midnight Commander.  To do this, you  must  specify  a  file
       that  contain descriptions of colors and lines to draw boxes. Redefining of the colors is en‐
       tirely compatible with the assignment of colors, as described in Section Colors.

       If your skin contains any true-color definitions, you should define the 'truecolors' key  set
       to  TRUE  value in [skin] section. If true-color is not used but 256-color is, you should de‐
       fine '256colors' instead.

       A skin-file is searched on the following algorithm (to the first one found):

              1) command line option **-S** **<skin>** or **--skin=<skin>**
              2) Environment variable **MC**___**SKIN**
              3) Parameter **skin** in section **[Midnight-Commander]** in config file.
              4) File **/etc/mc/skins/default.ini**
              5) File **/usr/share/mc/skins/default.ini**


       Command line option, environment variable and parameter in config file may contain the  abso‐
       lute  path to the skin-file (with the extension .ini or without it). Search of skin-file will
       occur in (to the first one found):

              1) **~/.local/share/mc/skins/**
              2) **/etc/mc/skins/**
              3) **/usr/share/mc/skins/**


       For getting extended info, refer to:

              Description of section and parameters
              Color pair definitions
              Color and attribute aliases
              Draw lines
              Compatibility


### Description of section and parameters
       Section **[skin]** contain metainfo for skin-file. Parameter _description_ contain short text about
       skin.


       Section **[filehighlight]** contain descriptions of color pairs for filenames highlighting.  Name
       of parameters must be equal to names of sections into filehighlight.ini file.  See  Filenames
       Highlight for getting more info.


       Section **[core]** describes the elements that are used everywhere.

       __default__
              Default color pair. Used in all other sections if they not contain color definitions

       _selected_
              cursor

       _marked_ selected data

       _markselect_
              cursor on selected data

       _gauge_  color of the filled part of the progress bar

       _input_  color of input lines used in query dialogs

       _inputmark_
              color of input selected text

       _inputunchanged_
              color of input text before first modification or cursor movement

       _commandlinemark_
              color of selected text in command line

       _reverse_
              reverse color

       Section  **[dialog]**  describes the elements that are placed on dialog windows (except error di‐
       alogs).

       __default__
              Default color for this section. Used [core]._default_ if not specified

       _dfocus_ Color of active element (in focus)

       _dhotnormal_
              Color of hotkeys

       _dhotfocus_
              Color of hotkeys in focused element


       Section **[error]** describes the elements that are placed on error dialog windows

       __default__
              Default color for this section. Used [core]._default_ if not specified

       _errdhotnormal_
              Color of hotkeys

       _errdhotfocus_
              Color of hotkeys in focused element


       Section **[menu]** describes the elements that are placed in menu. This section describes  system
       menu (called by F9) and user-defined menus (called by F2 in panels and by F11 in editor).

       __default__
              Default color for this section. Used [core]._default_ if not specified

       _entry_  Color of menu items

       _menuhot_
              Color of menu hotkeys

       _menusel_
              Color of active menu item (in focus)

       _menuhotsel_
              Color of menu hotkeys in focused menu item

       _menuinactive_
              Color of inactive menu


       Section **[help]** describes the elements that are placed on help window.

       __default__
              Default color for this section. Used [core]._default_ if not specified

       _helpitalic_
              Color pair for element with **italic** attribute

       _helpbold_
              Color pair for element with **bold** attribute

       _helplink_
              Color of links

       _helpslink_
              Color of active link (on focus)


       Section **[editor]** describes the colors of elements placed in editor.

       __default__
              Default color for this section. Used [core]._default_ if not specified

       _editbold_
              Color pair for element with **bold** attribute

       _editmarked_
              Color of selected text

       _editwhitespace_
              Color of tabs and trailing spaces highlighting

       _editlinestate_
              Color for line state area


       Section **[viewer]** describes the colors of elements placed in viewer.

       _viewunderline_
              Color pair for element with **underline** attribute


### Color pair definitions
       Any parameter in skin-file contain definition of color pair.

       Color pairs described as two colors and the optional attributes separated by ';'. First field
       sets the foreground color, second field sets background  color,  third  field  sets  the  at‐
       tributes.   Any  of  the fields may be omitted, in this case value will be taken from default
       color pair (global color pair or from default color pair of this section).

       Example:
       [core]
           # green on black
           _default_=green;black
           # green (default) on blue
           selected=;blue
           # yellow on black (default)
           # underlined yellow on black (default)
           marked=yellow;;underline


       Possible colors (names) and attributes are described in Colors.  section.


### Color and attribute aliases
       This optional section might define aliases for single colors (not color  pairs)  as  well  as
       combination  of  attributes; in other words, for semicolon-separated fragments of parameters.
       Aliases can refer to other aliases as long as they don't form a loop.

       Example:
       [aliases]
           myfavfg=green
           myfavbg=black
           myfavattr=bold+italic
       [core]
           _default_=myfavfg;myfavbg;myfavattr


### Draw lines
       Lines sets in section **[Lines]** into skin-file. By default single lines are used, but  you  may
       redefine to usage of any utf-8 symbols (like to lines, for example).

       _WARNING!!!_   When you build Midnight Commander with the ncurses screen library usage of draw‐
       ing lines is limited!  Possible only drawing a single lines.  For all questions and  comments
       please contact the developers of ncurses.


       Descriptions of parameters **[Lines]**:

       _lefttop_
              left-top line fragment.

       _righttop_
              right-top line fragment.

       _centertop_
              down branch of horizontal line

       _centerbottom_
              up branch of horizontal line

       _leftbottom_
              left-bottom line fragment

       _rightbottom_
              right-bottom line fragment

       _leftmiddle_
              right branch of vertical line

       _rightmiddle_
              left branch of vertical line

       _centermiddle_
              cross of lines

       _horiz_  horizontal line

       _vert_   vertical line

       _thinhoriz_
              thin horizontal line

       _thinvert_
              thin vertical line



### Compatibility
       Appointment  of  color  by skin-files fully compatible with the appointment of the colors de‐
       scribed in Colors.  section.

       In this case, reassignment of colors has priority over the skin file and is complementary.


### Filenames Highlight
       Section [filehighlight] in current skin-file contains key names as highlight groups and  val‐
       ues as color pairs. Color pairs is documented in Skins section.

       Rules  of  filenames  highlight  are  placed in /usr/share/mc/filehighlight.ini file (~/.con‐
       fig/mc/filehighlight.ini).  Name of section in this file must be equal to parameters names in
       [filehighlight] section (in current skin-file).

       Keys in these groups are:

       _type_   file type. If present, all other options are ignored.

       _regexp_ regular expression. If present, 'extensions' option is ignored.

       _extensions_
              list of extensions of files. Separated by ';' sign.

       _extensions_case_
              (make  sense  only  with 'extensions' parameter) make 'extensions' rule case sensitive
              (true) or not (false).

       `type' key may have values:
       - FILE (all files)
         - FILE_EXE
       - DIR (all directories)
         - LINK_DIR
       - LINK (all links except stale link)
         - HARDLINK
         - SYMLINK
       - STALE_LINK
       - DEVICE (all device files)
         - DEVICE_BLOCK
         - DEVICE_CHAR
       - SPECIAL (all special files)
         - SPECIAL_SOCKET
         - SPECIAL_FIFO
         - SPECIAL_DOOR

### Special Settings
       Most of Midnight Commander settings can be changed from the menus. However, there are a small
       number of settings which can only be changed by editing the setup file.

       These variables may be set in your ~/.config/mc/ini file:

       _clear_before_exec_
              By  default,  Midnight Commander clears the screen before executing a command.  If you
              would prefer to see the output of the command at the bottom of the screen,  edit  your
              ~/.config/mc/ini file and change the value of the field clear_before_exec to 0.

       _confirm_view_dir_
              If  you  press  F3 on a directory, normally MC enters that directory.  If this flag is
              set to 1, then MC will ask for confirmation before changing the directory if you  have
              files tagged.

       _ftpfs_retry_seconds_
              This  value is the number of seconds Midnight Commander will wait before attempting to
              reconnect to an FTP server that has denied the login.  If the value is zero, the login
              will no be retried.

       _max_dirt_limit_
              Specifies  how many screen updates can be skipped at most in the internal file viewer.
              Normally this value is not significant, because the  code  automatically  adjusts  the
              number  of  updates to skip according to the rate of incoming keystrokes.  However, on
              very slow machines or terminals with a fast keyboard auto repeat, a big value can make
              screen updates too jumpy.

              It  seems  that setting max_dirt_limit to 10 causes the best behavior, and that is the
              default value.

       _mouse_move_pages_viewer_
              Controls if scrolling with the mouse is done by pages or line by line on the  internal
              file viewer.

       _only_leading_plus_minus_
              Allow  special  treatment for '+', '-', '*' in the command line (select, unselect, re‐
              verse selection) only if the command line is empty.  You don't  need  to  quote  those
              characters  in the middle of the command line.  On the other hand, you cannot use them
              to change selection when the command line is not empty.

       _alternate_plus_minus_
              If true, use '+', '-', '\' and '*' keys normally. For  select/unselect,  use  'Alt-+',
              'Alt--' and 'Alt-*'.

       _show_output_starts_shell_
              This  variable only works if you are not using the subshell support.  When you use the
              C-o keystroke to go back to the user screen, if this one is set, you will get a  fresh
              shell.  Otherwise, pressing any key will bring you back to Midnight Commander.

       _timeformat_recent_
              Change  the  time format used to display dates less than 6 months from now.  See strf‐
              time or date man page for the format specification. If this option is absent,  default
              timeformat is used.

       _timeformat_old_
              Change  the  time  format  used  to display  dates older than 6 months from now or for
              dates in the future.  See strftime or date man page for the format  specification.  If
              this option is absent, default timeformat is used.

       _torben_fj_mode_
              If  this  flag  is set, then the home and end keys will work slightly different on the
              panels, instead of moving the selection to the first and last  files  in  the  panels,
              they will act as follows:

              The  home key will: Go up to the middle line, if below it; else go to the top line un‐
              less it is already on the top line, in this case it will go to the first file  in  the
              panel.

              The end key has a similar behavior: Go down to the middle line, if over it; else go to
              the bottom line unless you already are at the bottom line, in such case it  will  move
              the selection to the last file name in the panel.

       _use_file_to_guess_type_
              If  this variable is on (the default) it will spawn the file command to match the file
              types listed on the mc.ext file.

       _xtree_mode_
              If this variable is on (default is off) when you browse the  file  system  on  a  Tree
              panel,  it will automatically reload the other panel with the contents of the selected
              directory.

       _fish_directory_timeout_
              This variable holds the lifetime of a directory cache entry in  seconds.  The  default
              value is 900 seconds.

       _clipboard_store_
              This  variable  contains  path  (with  options) to the external clipboard utility like
              'xclip' to read text into X selection from file.  For example:

       clipboard_store=xclip -i

       _clipboard_paste_
              This variable contains path (with options) to  the  external  clipboard  utility  like
              'xclip' to print the selection to standard out.  For example:

       clipboard_paste=xclip -o

       _autodetect_codeset_
              This  option  allows use the `enca' command to autodetect codeset of text files in in‐
              ternal viewer and editor. List of valid values can be obtain by the `enca --list  lan‐
              guages | cut -d : -f1' command. Option must be located in the [Misc] section.

       For example:

       autodetect_codeset=russian

### Parameters for external editor or viewer
       Midnight  Commander  provides  a way for specify an options for external editors and viewers.
       Midnight Commander tries to search the "[External editor or viewer  parameters]"  section  in
       the  system  initialization file (the mc.lib file located in Midnight Commander's library di‐
       rectory) and then in the ~/.config/mc/ini file. The option name should be equal to  the  name
       (full  pathname)  of  external editor or viewer. The option value can contain following vari‐
       ables:

       _%filename_
              The filename to edit/view.

       _%lineno_
              The start line in the opening file.

       For example:

       [External editor or viewer parameters]
           vi=%filename +%lineno
           joe=%filename +%lineno
           more=%filename +%lineno

       Start line is passed to the external editor/viewer only if it is called from  the  Find  file
       results window.

       If  external editor/viewer is launched via F4/F3 keys, MC hopes that program (at least "joe",
       but probably others too) has an own feature that by default opens the file where it was  last
       open. MC doesn't prevent external editor/viewer to save and restore position in opened files.

### Terminal databases
       Midnight Commander provides a way to fix your system terminal database without requiring root
       privileges. Midnight Commander searches in the system initialization file  (the  mc.lib  file
       located  in  Midnight Commander's library directory) and in the ~/.config/mc/ini file for the
       section "terminal:your-terminal-name" and then for the section "terminal:general", each  line
       of  the  section contains a key symbol that you want to define, followed by an equal sign and
       the definition for the key.  You can use the special \e form to represent the escape  charac‐
       ter and the ^x to represent the control-x character.

       The possible key symbols are:

       f0 to f20     Function keys f0-f20
       bs            backspace
       home          home key
       end           end key
       up            up arrow key
       down          down arrow key
       left          left arrow key
       right         right arrow key
       pgdn          page down key
       pgup          page up key
       insert        the insert character
       delete        the delete character
       complete      to do completion

       For  example,  to define the key insert to be the Escape + [ + O + p, you set this in the ini
       file:

       insert=\e[Op


       Also now you can use _extended_ _learn_ _keys._  For example:

           ctrl-alt-right=\e[[1;6C
           ctrl-alt-left=\e[[1;6D


       This means that ctrl+alt+left sends a \e[[1;6D escape sequence and therefore Midnight Comman‐
       der interprets "\e[[1;6D" as C-Alt-Left.


       The  _complete_  key  symbol  represents  the  escape  sequences  used to invoke the completion
       process, this is invoked with Alt-tab, but you can define other keys to do the same work  (on
       those keyboard with tons of nice and unused keys everywhere).


## FILES
       Full  paths  below  may vary between installations.  They are also affected by the **MC**___**DATADIR**
       environment variable. If it's set, its value is used instead of /usr/share/mc  in  the  paths
       below.

       _/usr/share/mc/help/mc.hlp_

              The help file for the program.

       _/usr/share/mc/mc.ext_

              The default system-wide extensions file.

       _~/.config/mc/mc.ext_

              User's  own  extension, view configuration and edit configuration file.  They override
              the contents of the system wide files if present.

       _/etc/mc/mc.ini_
       _/usr/share/mc/mc.ini_

              System-wide setup files for Midnight Commander, used only if the user doesn't have his
              own **~/.config/mc/ini** file. If /etc/mc/mc.ini exists, /usr/share/mc/mc.ini isn't used.

       _/usr/share/mc/mc.lib_

              Global  settings  for  Midnight  Commander.  Settings  in  this file affect all users,
              whether they have ~/.config/mc/ini or not.   Currently,  only  terminal  settings  are
              loaded from mc.lib.

       _~/.config/mc/ini_

              User's  own  setup. If this file is present then the setup is loaded from here instead
              of the system-wide startup file.

       _/usr/share/mc/hints/mc.hint_

              This file contains the hints displayed by the program.

       _/usr/share/mc/mc.menu_

              This file contains the default system-wide applications menu.

       _~/.config/mc/menu_

              User's own application menu. If this file is present it is used instead  of  the  sys‐
              tem-wide applications menu.

       _~/.cache/mc/Tree_

              The directory list for the directory tree and tree view features.

       _~/.local/share/mc.menu_

              Local  user-defined  menu.  If this file is present, it is used instead of the home or
              system-wide applications menu.

       To change default root directory of MC, you can use **MC**___**PROFILE**___**ROOT** environment variable. The
       value  of  MC_PROFILE_ROOT  must  be an absolute path.  If MC_PROFILE_ROOT is unset or empty,
       HOME variable is used. If HOME is unset or empty, MC directories are get from GLib library.

## LICENSE
       This program is distributed under the terms of the GNU General Public License as published by
       the  Free  Software Foundation. See the built-in help for details on the License and the lack
       of warranty.

## AVAILABILITY
       The latest version of this program can be found at <http://ftp.midnight-commander.org/>.

## SEE ALSO
       [ed(1)](https://www.chedong.com/phpMan.php/man/ed/1/markdown), [gpm(1)](https://www.chedong.com/phpMan.php/man/gpm/1/markdown), [terminfo(1)](https://www.chedong.com/phpMan.php/man/terminfo/1/markdown), [view(1)](https://www.chedong.com/phpMan.php/man/view/1/markdown), [sh(1)](https://www.chedong.com/phpMan.php/man/sh/1/markdown), [bash(1)](https://www.chedong.com/phpMan.php/man/bash/1/markdown), [tcsh(1)](https://www.chedong.com/phpMan.php/man/tcsh/1/markdown), [zsh(1)](https://www.chedong.com/phpMan.php/man/zsh/1/markdown).

       Midnight Commander's page on the World Wide Web:
            <http://www.midnight-commander.org/>

## AUTHORS
       Authors and contributors are listed in the AUTHORS file in the source distribution.

## BUGS
       See the file TODO in the distribution for information on what remains to be done.

       If you want to report a problem with the program, please create bugreport at  <http://www.mid>‐
       night-commander.org/.

       Provide  a detailed description of the bug, the version of the program you are running (_mc_ _-V_
       displays this information), the operating system you are running the program on.  If the pro‐
       gram crashes, we would appreciate a stack trace.



MC Version 4.8.27                            August 2021                                       [MC(1)](https://www.chedong.com/phpMan.php/man/MC/1/markdown)
