Man page of DF
Section: User Commands (1)
Updated: June 2009
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df - report file system disk space usage
This manual page
documents the GNU version of
displays the 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
If an argument is the absolute file name of a disk device node containing a
mounted file system,
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
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
use SIZE-byte blocks
produce a grand total
- -h, --human-readable
print sizes in human readable format (e.g., 1K 234M 2G)
- -H, --si
likewise, but use powers of 1000 not 1024
- -i, --inodes
list inode information instead of block usage
- -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
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 [email protected]
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Copyright © 2009 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
is maintained as a Texinfo manual. If the
programs are properly installed at your site, the command
info coreutils 'df invocation'
should give you access to the complete manual.
- REPORTING BUGS
- SEE ALSO
This document was created by
using the manual pages.
Time: 03:41:10 GMT, September 24, 2010