{
"content": [
{
"type": "text",
"text": "# df (man)\n\n## NAME\n\ndf - report file system space usage\n\n## SYNOPSIS\n\ndf [OPTION]... [FILE]...\n\n## DESCRIPTION\n\nThis manual page documents the GNU version of df. df displays the amount of space available\non the file system containing each file name argument. If no file name is given, the space\navailable on all currently mounted file systems is shown. Space is shown in 1K blocks by de‐\nfault, unless the environment variable POSIXLYCORRECT is set, in which case 512-byte blocks\nare used.\n\n## TLDR\n\n> Display an overview of the filesystem disk space usage.\n\n- Display all filesystems and their disk usage (using 512-byte units):\n `df`\n- Display the filesystem containing the specified file or directory:\n `df {{path/to/file_or_directory}}`\n- Use [k]ibibyte (1024 byte) units when showing size figures:\n `df -k`\n- Display information in a portable way:\n `df -P`\n\n*Source: tldr-pages*\n\n## Sections\n\n- **NAME**\n- **SYNOPSIS**\n- **DESCRIPTION**\n- **OPTIONS** (15 subsections)\n- **AUTHOR**\n- **REPORTING BUGS**\n- **COPYRIGHT**\n- **SEE ALSO**\n\nUse structuredContent.sections for detailed options, examples, and full documentation.\n"
}
],
"structuredContent": {
"command": "df",
"section": "",
"mode": "man",
"summary": "df - report file system space usage",
"synopsis": "df [OPTION]... [FILE]...",
"tldr_summary": "Display an overview of the filesystem disk space usage.",
"tldr_examples": [
{
"description": "Display all filesystems and their disk usage (using 512-byte units)",
"command": "df"
},
{
"description": "Display the filesystem containing the specified file or directory",
"command": "df {{path/to/file_or_directory}}"
},
{
"description": "Use [k]ibibyte (1024 byte) units when showing size figures",
"command": "df -k"
},
{
"description": "Display information in a portable way",
"command": "df -P"
}
],
"tldr_source": "official",
"flags": [
{
"flag": "-a",
"long": "--all",
"arg": null,
"description": "include pseudo, duplicate, inaccessible file systems"
},
{
"flag": "-B",
"long": "--block-size",
"arg": null,
"description": "scale sizes by SIZE before printing them; e.g., '-BM' prints sizes in units of 1,048,576 bytes; see SIZE format below"
},
{
"flag": "-h",
"long": "--human-readable",
"arg": null,
"description": "print sizes in powers of 1024 (e.g., 1023M)"
},
{
"flag": "-H",
"long": "--si",
"arg": null,
"description": "print sizes in powers of 1000 (e.g., 1.1G)"
},
{
"flag": "-i",
"long": "--inodes",
"arg": null,
"description": "list inode information instead of block usage"
},
{
"flag": "-k",
"long": "--block-size",
"arg": null,
"description": ""
},
{
"flag": "-l",
"long": "--local",
"arg": null,
"description": "limit listing to local file systems"
},
{
"flag": "",
"long": "--no-sync",
"arg": null,
"description": "do not invoke sync before getting usage info (default) --output[=FIELDLIST] use the output format defined by FIELDLIST, or print all fields if FIELDLIST is omitted."
},
{
"flag": "-P",
"long": "--portability",
"arg": null,
"description": "use the POSIX output format --sync invoke sync before getting usage info"
},
{
"flag": "",
"long": "--total",
"arg": null,
"description": "elide all entries insignificant to available space, and produce a grand total"
},
{
"flag": "-t",
"long": "--type",
"arg": null,
"description": "limit listing to file systems of type TYPE"
},
{
"flag": "-T",
"long": "--print-type",
"arg": null,
"description": "print file system type"
},
{
"flag": "-x",
"long": "--exclude-type",
"arg": null,
"description": "limit listing to file systems not of type TYPE"
},
{
"flag": "-v",
"long": null,
"arg": null,
"description": "--help display this help and exit"
},
{
"flag": "",
"long": "--version",
"arg": null,
"description": "output version information and exit Display values are in units of the first available SIZE from --block-size, and the DFBLOCKSIZE, BLOCKSIZE and BLOCKSIZE environment variables. Otherwise, units default to 1024 bytes (or 512 if POSIXLYCORRECT is set). The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y,R,Q (powers of 1024) or KB,MB,... (powers of 1000). Binary prefixes can be used, too: KiB=K, MiB=M, and so on. FIELDLIST is a comma-separated list of columns to be included. Valid field names are: 'source', 'fstype', 'itotal', 'iused', 'iavail', 'ipcent', 'size', 'used', 'avail', 'pcent', 'file' and 'target' (see info page)."
}
],
"examples": [],
"see_also": [],
"section_outline": [
{
"name": "NAME",
"lines": 2,
"subsections": []
},
{
"name": "SYNOPSIS",
"lines": 2,
"subsections": []
},
{
"name": "DESCRIPTION",
"lines": 12,
"subsections": []
},
{
"name": "OPTIONS",
"lines": 5,
"subsections": [
{
"name": "-a --all",
"lines": 2,
"flag": "-a",
"long": "--all"
},
{
"name": "-B --block-size",
"lines": 3,
"flag": "-B",
"long": "--block-size"
},
{
"name": "-h --human-readable",
"lines": 2,
"flag": "-h",
"long": "--human-readable"
},
{
"name": "-H --si",
"lines": 2,
"flag": "-H",
"long": "--si"
},
{
"name": "-i --inodes",
"lines": 2,
"flag": "-i",
"long": "--inodes"
},
{
"name": "-k --block-size",
"lines": 1,
"flag": "-k",
"long": "--block-size"
},
{
"name": "-l --local",
"lines": 2,
"flag": "-l",
"long": "--local"
},
{
"name": "--no-sync",
"lines": 6,
"long": "--no-sync"
},
{
"name": "-P --portability",
"lines": 4,
"flag": "-P",
"long": "--portability"
},
{
"name": "--total",
"lines": 2,
"long": "--total"
},
{
"name": "-t --type",
"lines": 2,
"flag": "-t",
"long": "--type"
},
{
"name": "-T --print-type",
"lines": 2,
"flag": "-T",
"long": "--print-type"
},
{
"name": "-x --exclude-type",
"lines": 2,
"flag": "-x",
"long": "--exclude-type"
},
{
"name": "-v (ignored)",
"lines": 2,
"flag": "-v"
},
{
"name": "--version",
"lines": 14,
"long": "--version"
}
]
},
{
"name": "AUTHOR",
"lines": 2,
"subsections": []
},
{
"name": "REPORTING BUGS",
"lines": 3,
"subsections": []
},
{
"name": "COPYRIGHT",
"lines": 5,
"subsections": []
},
{
"name": "SEE ALSO",
"lines": 4,
"subsections": []
}
],
"sections": {
"NAME": {
"content": "df - report file system space usage\n",
"subsections": []
},
"SYNOPSIS": {
"content": "df [OPTION]... [FILE]...\n",
"subsections": []
},
"DESCRIPTION": {
"content": "This manual page documents the GNU version of df. df displays the amount of space available\non the file system containing each file name argument. If no file name is given, the space\navailable on all currently mounted file systems is shown. Space is shown in 1K blocks by de‐\nfault, unless the environment variable POSIXLYCORRECT is set, in which case 512-byte blocks\nare used.\n\nIf an argument is the absolute file name of a device node containing a mounted file system,\ndf shows the space available on that file system rather than on the file system containing\nthe device node. This version of df cannot show the space available on unmounted file sys‐\ntems, because on most kinds of systems doing so requires non-portable intimate knowledge of\nfile system structures.\n",
"subsections": []
},
"OPTIONS": {
"content": "Show information about the file system on which each FILE resides, or all file systems by de‐\nfault.\n\nMandatory arguments to long options are mandatory for short options too.\n",
"subsections": [
{
"name": "-a --all",
"content": "include pseudo, duplicate, inaccessible file systems\n",
"flag": "-a",
"long": "--all"
},
{
"name": "-B --block-size",
"content": "scale sizes by SIZE before printing them; e.g., '-BM' prints sizes in units of\n1,048,576 bytes; see SIZE format below\n",
"flag": "-B",
"long": "--block-size"
},
{
"name": "-h --human-readable",
"content": "print sizes in powers of 1024 (e.g., 1023M)\n",
"flag": "-h",
"long": "--human-readable"
},
{
"name": "-H --si",
"content": "print sizes in powers of 1000 (e.g., 1.1G)\n",
"flag": "-H",
"long": "--si"
},
{
"name": "-i --inodes",
"content": "list inode information instead of block usage\n",
"flag": "-i",
"long": "--inodes"
},
{
"name": "-k --block-size",
"content": "",
"flag": "-k",
"long": "--block-size"
},
{
"name": "-l --local",
"content": "limit listing to local file systems\n",
"flag": "-l",
"long": "--local"
},
{
"name": "--no-sync",
"content": "do not invoke sync before getting usage info (default)\n\n--output[=FIELDLIST]\nuse the output format defined by FIELDLIST, or print all fields if FIELDLIST is\nomitted.\n",
"long": "--no-sync"
},
{
"name": "-P --portability",
"content": "use the POSIX output format\n\n--sync invoke sync before getting usage info\n",
"flag": "-P",
"long": "--portability"
},
{
"name": "--total",
"content": "elide all entries insignificant to available space, and produce a grand total\n",
"long": "--total"
},
{
"name": "-t --type",
"content": "limit listing to file systems of type TYPE\n",
"flag": "-t",
"long": "--type"
},
{
"name": "-T --print-type",
"content": "print file system type\n",
"flag": "-T",
"long": "--print-type"
},
{
"name": "-x --exclude-type",
"content": "limit listing to file systems not of type TYPE\n",
"flag": "-x",
"long": "--exclude-type"
},
{
"name": "-v (ignored)",
"content": "--help display this help and exit\n",
"flag": "-v"
},
{
"name": "--version",
"content": "output version information and exit\n\nDisplay values are in units of the first available SIZE from --block-size, and the\nDFBLOCKSIZE, BLOCKSIZE and BLOCKSIZE environment variables. Otherwise, units default to\n1024 bytes (or 512 if POSIXLYCORRECT is set).\n\nThe SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are\nK,M,G,T,P,E,Z,Y,R,Q (powers of 1024) or KB,MB,... (powers of 1000). Binary prefixes can be\nused, too: KiB=K, MiB=M, and so on.\n\nFIELDLIST is a comma-separated list of columns to be included. Valid field names are:\n'source', 'fstype', 'itotal', 'iused', 'iavail', 'ipcent', 'size', 'used', 'avail', 'pcent',\n'file' and 'target' (see info page).\n",
"long": "--version"
}
]
},
"AUTHOR": {
"content": "Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.\n",
"subsections": []
},
"REPORTING BUGS": {
"content": "GNU coreutils online help: \nReport any translation bugs to \n",
"subsections": []
},
"COPYRIGHT": {
"content": "Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later\n.\nThis is free software: you are free to change and redistribute it. There is NO WARRANTY, to\nthe extent permitted by law.\n",
"subsections": []
},
"SEE ALSO": {
"content": "Full documentation \nor available locally via: info '(coreutils) df invocation'\n\nGNU coreutils 9.4 January 2026 DF(1)",
"subsections": []
}
}
}
}