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 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 very non-
portable intimate knowledge of file system structures.
Show information about the file system on which each FILE resides, or all file systems by
Mandatory arguments to long options are mandatory for short options too.
include dummy file systems
scale sizes by SIZE before printing them; e.g., '-BM' prints sizes in units of
1,048,576 bytes; see SIZE format below
show statistics for a file instead of mount point
produce a grand total
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 output format defined by FIELD_LIST, or print all fields if FIELD_LIST is
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
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).
SIZE is an integer and optional unit (example: 10M is 10*1024*1024). Units are K, M, G,
T, P, E, Z, Y (powers of 1024) or KB, MB, ... (powers of 1000).
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).
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report df translation
bugs to <http://translationproject.org/team/>
Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or
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 info and df pro-
grams are properly installed at your site, the command
info coreutils 'df invocation'
should give you access to the complete manual.
GNU coreutils 8.22 June 2014 DF(1)