DF(1) FSF DF(1)
df - report filesystem disk space usage
df [OPTION]... [FILE]...
This manual page documents the GNU version of df. df displays the amount of disk space
available on the filesystem containing each file name argument. If no file name is given,
the space available on all currently mounted filesystems 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
filesystem, df shows the space available on that filesystem rather than on the filesystem
containing the device node (which is always the root filesystem). This version of df can-
not show the space available on unmounted filesystems, because on most kinds of systems
doing so requires very nonportable intimate knowledge of filesystem structures.
Show information about the filesystem on which each FILE resides, or all filesystems by
Mandatory arguments to long options are mandatory for short options too.
include filesystems having 0 blocks
-B, --block-size=SIZE use SIZE-byte blocks
print sizes in human readable format (e.g., 1K 234M 2G)
likewise, but use powers of 1000 not 1024
list inode information instead of block usage
-k like --block-size=1K
limit listing to local filesystems
do not invoke sync before getting usage info (default)
use the POSIX output format
--sync invoke sync before getting usage info
limit listing to filesystems of type TYPE
print filesystem type
limit listing to filesystems not of type TYPE
--help 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 1,000,000, M 1,048,576, and so on for G, T, P, E, Z, Y.
Written by Torbjorn Granlund, David MacKenzie, Larry McVoy, and Paul Eggert.
Report bugs to <email@example.com>.
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not
even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
The full documentation for df is maintained as a Texinfo manual. If the info and df pro-
grams are properly installed at your site, the command
should give you access to the complete manual.
df (coreutils) 4.5.3 February 2003 DF(1)