df


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
       --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 (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  com-
       mand

              info df

       should give you access to the complete manual.


df 5.97 March 2012 DF(1)



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