linux df

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 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
       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 BLOCKSIZE environ-
       ment 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 fol-
       lowing: 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  ©  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 8.4         November 2013                 DF(1)