Provided by: coreutils_8.28-1ubuntu2_amd64 bug

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.   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 pseudo, duplicate, inaccessible 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

       -h, --human-readable
              print sizes in powers of 1024 (e.g., 1023M)

       -H, --si
              print sizes in powers of 1000 (e.g., 1.1G)

       -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)

       --output[=FIELD_LIST]
              use  the  output format defined by FIELD_LIST, or print all fields if FIELD_LIST is
              omitted.

       -P, --portability
              use the POSIX output format

       --sync invoke sync before getting usage info

       --total
              elide all entries insignificant to available space, and produce a grand total

       -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).

       The SIZE argument is an integer and optional unit (example: 10K is  10*1024).   Units  are
       K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (powers of 1000).

       FIELD_LIST  is  a  comma-separated list of columns to be included.  Valid field names are:
       'source', 'fstype',  'itotal',  'iused',  'iavail',  'ipcent',  'size',  'used',  'avail',
       'pcent', 'file' and 'target' (see info page).

AUTHOR

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

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report df translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright  ©  2017  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  WARRANTY,
       to the extent permitted by law.

SEE ALSO

       Full documentation at: <http://www.gnu.org/software/coreutils/df>
       or available locally via: info '(coreutils) df invocation'