DF(1)				 User Commands				 DF(1)

NAME
       df - report file system space usage

SYNOPSIS
       df [OPTION]... [FILE]...

DESCRIPTION
       This manual page documents the GNU version of df.  df displays the
       amount of space available on the file system containing each file name
       argument.  If no file name is given, the space available on all
       currently mounted file systems is shown.	 Space is shown in 1K blocks
       by default, unless the environment variable POSIXLY_CORRECT is set, in
       which case 512-byte blocks are used.

       If an argument is the absolute file name of a device node containing a
       mounted file system, df shows the space available on that file system
       rather than on the file system containing the device node.  This
       version of df cannot show the space available on unmounted file
       systems, because on most kinds of systems doing so requires non-
       portable intimate knowledge of file system structures.

OPTIONS
       Show information about the file system on which each FILE resides, or
       all file systems by default.

       Mandatory arguments to long options are mandatory for short options
       too.

       -a, --all
	      include pseudo, duplicate, inaccessible file systems

       -B, --block-size=SIZE
	      scale sizes by SIZE before printing them; e.g., '-BM' prints
	      sizes in units of 1,048,576 bytes; see SIZE format below

       -h, --human-readable
	      print sizes in powers of 1024 (e.g., 1023M)

       -H, --si
	      print sizes in powers of 1000 (e.g., 1.1G)

       -i, --inodes
	      list inode information instead of block usage

       -k     like --block-size=1K

       -l, --local
	      limit listing to local file systems

       --no-sync
	      do not invoke sync before getting usage info (default)

       --output[=FIELD_LIST]
	      use the output format defined by FIELD_LIST, or print all fields
	      if FIELD_LIST is omitted

       -P, --portability
	      use the POSIX output format

       --sync invoke sync before getting usage info

       --total
	      elide all entries insignificant to available space, and produce
	      a grand total

       -t, --type=TYPE
	      limit listing to file systems of type TYPE

       -T, --print-type
	      print file system type

       -x, --exclude-type=TYPE
	      limit listing to file systems not of type TYPE

       -v     (ignored)

       --help display this help and exit

       --version
	      output version information and exit

       Display values are in units of the first available SIZE from
       --block-size, and the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCKSIZE
       environment variables.  Otherwise, units default to 1024 bytes (or 512
       if POSIXLY_CORRECT 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.

       FIELD_LIST 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).

AUTHOR
       Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.

REPORTING BUGS
       Report bugs to: bug-coreutils@gnu.org
       GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
       General help using GNU software: <https://www.gnu.org/gethelp/>
       Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
       Copyright © 2025 Free Software Foundation, Inc.	License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       Full documentation <https://www.gnu.org/software/coreutils/df>
       or available locally via: info '(coreutils) df invocation'

GNU coreutils 9.8		September 2025				 DF(1)