du - summarize disk usage

SYNOPSIS

       du [-abcklsxDLS] [--all] [--total] [--count-links] [--sum-
       marize]   [--bytes]   [--kilobytes]    [--one-file-system]
       [--separate-dirs]   [--dereference]   [--dereference-args]
       [--help] [--version] [filename...]

DESCRIPTION

       This manual page documents the GNU version of du.  du dis-
       plays  the  amount of disk space used by each argument and
       for each subdirectory of directory arguments.   The  space
       is  measured  in 1K blocks by default, unless the environ-
       ment  variable  POSIXLY_CORRECT  is  set,  in  which  case
       512-byte blocks are used.

   OPTIONS
       -a, --all
              Display counts for all files, not just directories.

       -b, --bytes
              Print sizes in bytes.

       -c, --total
              Write a grand total of all of the  arguments  after
              all  arguments  have  been  processed.  This can be
              used to find out the disk  usage  of  a  directory,
              with some files excluded.

       -k, --kilobytes
              Print sizes in kilobytes.  This overrides the envi-
              ronment variable POSIXLY_CORRECT.

       -l, --count-links
              Count the size of all  files,  even  if  they  have
              appeared already in another hard link.

       -s, --summarize
              Display only a total for each argument.

       -x, --one-file-system
              Skip  directories that are on different filesystems
              from the one that the argument being  processed  is
              on.

       -D, --dereference-args
              Dereference  symbolic  links  that are command line
              arguments.  Does not affect other  symbolic  links.
              This  is  helpful for finding out the disk usage of
              directories like /usr/tmp where they  are  symbolic
              links.

              Dereference  symbolic  links  (show  the disk space
              used by the file or directory that the link  points
              to instead of the space used by the link).

       -S, --separate-dirs
              Count  the  size  of each directory separately, not
              including the sizes of subdirectories.

       --help Print a usage message on standard output  and  exit
              successfully.

       --version
              Print  version  information on standard output then
              exit successfully.

BUGS

       On BSD systems, du reports sizes that are half the correct
       values  for files that are NFS-mounted from HP-UX systems.
       On HP-UX systems, it reports sizes that are twice the cor-
       rect  values  for files that are NFS-mounted from BSD sys-
       tems.  This is due to a flaw in HP-UX; it also affects the
       HP-UX du program.