df - phpMan

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 knowl-
       edge of file system structures.

OPTIONS
       Show information about the file system on which each FILE resides, or all file sys-
       tems 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

       -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

       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 bugs to <bug-coreutils AT gnu.org>.

COPYRIGHT
       Copyright (C) 2006 Free Software Foundation, Inc.
       This is free software.  You may redistribute copies of it under the  terms  of  the
       GNU  General  Public  License  <http://www.gnu.org/licenses/gpl.html>.  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 df

       should give you access to the complete manual.



df 5.97                          February 2010                           DF(1)

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