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 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 (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
	      use SIZE-byte blocks

       --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 (C) 2010 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 com-
       mand

	      info coreutils 'df invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							     DF(1)