Provided by: coreutils_8.13-3ubuntu3_i386 bug


       df - report file system disk space usage


       df [OPTION]... [FILE]...


       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 knowledge of file
       system structures.


       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

       -a, --all
              include dummy file systems

       -B, --block-size=SIZE
              scale sizes by SIZE before printing them.   E.g.,  `-BM'  prints
              sizes in units of 1,048,576 bytes.  See SIZE format below.

              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

              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

              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
       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.


       Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.


       Report df bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>
       Report df translation bugs to <>


       Copyright © 2011 Free Software Foundation, Inc.   License  GPLv3+:  GNU
       GPL version 3 or later <>.
       This  is  free  software:  you  are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.


       The full documentation for df is maintained as a  Texinfo  manual.   If
       the  info  and  df  programs  are  properly installed at your site, the

              info coreutils 'df invocation'

       should give you access to the complete manual.