df - report file system disk space usage
This manual page documents the GNU version of df
amount of disk 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. Disk 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 disk 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 (which is always the
root file system). This version of df
cannot show the space available
on unmounted file systems, because on most kinds of systems doing so requires
very nonportable intimate knowledge of file system structures.
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 dummy 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.
- produce a grand total
- -h, --human-readable
- print sizes in human readable format (e.g., 1K 234M
- -H, --si
- likewise, but use powers of 1000 not 1024
- -i, --inodes
- list inode information instead of block usage
- like --block-size=1K
- -l, --local
- limit listing to local file systems
- do not invoke sync before getting usage info (default)
- -P, --portability
- use the POSIX output format
- invoke sync before getting usage info
- -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
- display this help and exit
- output version information and exit
Display values are in units of the first available SIZE from
, and the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCKSIZE
environment variables. Otherwise, units default to 1024 bytes (or 512 if
POSIXLY_CORRECT is set).
SIZE may be (or may be an integer optionally followed by) one of following: KB
1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y.
Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.
Report df bugs to firstname.lastname@example.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/
General help using GNU software: <http://www.gnu.org/gethelp/
Report df translation bugs to <http://translationproject.org/team/
Copyright © 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL
version 3 or later <http://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.
The full documentation for df
is maintained as a Texinfo manual. If the
programs are properly installed at your site, the
- info coreutils 'df invocation'
should give you access to the complete manual.