DF linux command manual

DF(1)                          User Commands                           DF(1)

       df - report filesystem 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 filesystem containing each  file
       name  argument.   If no file name is given, the space available on all
       currently mounted filesystems 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  con-
       taining  a  mounted  filesystem,  df shows the space available on that
       filesystem rather than on the filesystem containing  the  device  node
       (which is always the root filesystem).  This version of df cannot show
       the space available on unmounted filesystems, because on most kinds of
       systems  doing  so  requires  very  nonportable  intimate knowledge of
       filesystem structures.

       Show information about the filesystem on which each FILE  resides,  or
       all filesystems by default.

       Mandatory  arguments  to  long options are mandatory for short options

       -a, --all
              include filesystems having 0 blocks

       -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 filesystems

              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 filesystems of type TYPE

       -T, --print-type
              print filesystem type

       -x, --exclude-type=TYPE
              limit listing to filesystems not of type TYPE

       -v     (ignored)

       --help display this help and exit

              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.

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

       Report bugs to .

       Copyright (C) 2004 Free Software Foundation, Inc.
       This is free software; see the source for copying  conditions.   There
       is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-

       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-

              info coreutils df

       should give you access to the complete manual.

df (coreutils) 5.2.1               May 2004                             DF(1)