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df command man page

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

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

COPYRIGHT
       Copyright © 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  com-
       mand

     info df

       should give you access to the complete manual.

df 5.97   May 2011 DF(1)

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