man--df

DF(1)                            User Commands                           DF(1)
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 ver-
       sion 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

       --direct
              show statistics for a file instead of mount point

       --total
              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

       --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

       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.

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

REPORTING BUGS
       Report df bugs to [email protected]
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report df translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright © 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3  or
       later <http://gnu.org/licenses/gpl.html>.
       This  is  free software: you are free to change and redistribute it.  There is NO WAR-
       RANTY, 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 coreutils 'df invocation'

       should give you access to the complete manual.

GNU coreutils 8.4                November 2013                           DF(1)
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