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
       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

       --direct
              show statistics for a file instead of mount point

       --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 BLOCK-
       SIZE 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-coreutilsATgnu.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 command

              info coreutils 'df invocation'

       should give you access to the complete manual.



GNU coreutils 8.5                                         November 2010                                                    DF(1)