DF(1)							   User Commands						     DF(1)



NAME
       df - report file system disk space usage

SYNOPSIS
       df [OPTION]... [FILE]...

DESCRIPTION
       This  manual  page documents the GNU version of df.  df displays the amount of disk space available on the file system con‐
       taining 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  avail‐
       able  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.

OPTIONS
       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.

       --total
	      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

       -k     like --block-size=1K

       -l, --local
	      limit listing to local file systems

       --no-sync
	      do not invoke sync before getting usage info (default)

       -P, --portability
	      use the POSIX output format

       --sync 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

       -v     (ignored)

       --help display this help and exit

       --version
	      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 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.

AUTHOR
       Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.

REPORTING BUGS
       Report df bugs to bug-coreutils@gnu.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
       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.

SEE ALSO
       The  full  documentation  for  df is maintained as a Texinfo manual.  If the info and df programs are properly installed at
       your site, the command

	      info coreutils 'df invocation'

       should give you access to the complete manual.



GNU coreutils 8.12.197-032bb				  September 2011						     DF(1)