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DF(1)                            User Commands                           DF(1)

       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 too.

       -a, --all
              include dummy file systems

       -B, --block-size=SIZE
              use SIZE-byte blocks

              show statistics for a file instead of mount point

              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

       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  (C)  2010  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 permit-
       ted 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 command

              info coreutils 'df invocation'

       should give you access to the complete manual.

GNU coreutils 8.4                 March 2017                             DF(1)