DF(1) User Commands DF(1)
df - report file system 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 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 contain-
ing 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
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
include dummy file systems
-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 file systems
do not invoke sync before getting usage info (default)
use the POSIX output format
--sync invoke sync before getting usage info
limit listing to file systems of type TYPE
print file system type
limit listing to file systems 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 fol-
lowing: 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 bugs to <firstname.lastname@example.org>.
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the
terms of the GNU General Public License
<http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the
extent permitted by law.
The full documentation for df is maintained as a Texinfo manual. If
the info and df programs are properly installed at your site, the com-
should give you access to the complete manual.
df 5.97 March 2012 DF(1)