SYNOPSIS

       du [-arshHkLxo] [name ...]

DESCRIPTION

       Du  gives  the  number of blocks (512 bytes) contained in all files and
       (recursively) directories within each specified directory or file name.
       If name is missing, `.'  is used.

       The following options are supported:

       -a     This  option  causes  an  entry  to  be generated for each file.
              Absence of either causes an  entry  to  be  generated  for  each
              directory only.

       -r     Show    error    messages.     This    is   the   default   with
              /usr/5bin/posix/du and /usr/5bin/posix2001/du.

       -s     This option causes only the grand total to be given.   Overrides
              the -a option.

       The following options have been introduced by POSIX.2:

       -k     Print  statistics in units of 1024 bytes, rounded up to the next
              unit.

       -x     Do not cross device boundaries when descending a directory hier-
              archy.

       The following options have been introduced by POSIX.1-2001:

       -H     Follow  symbolic  links  given on the command line and count the
              size of the files they refer to,  but  do  not  follow  symbolic
              links  found  during  directory traversal and count the sizes of
              these symbolic links themselves.

       -L     Always follow symbolic links and count the sizes  of  the  files
              they refer to.

       The following options are extensions:

       -h     Print  statistics in human-readable powers of 1024, i.e. `K' for
              kilobyte, `M' for megabyte, `G' for gigabyte, `T' for  terabyte,
              `P' for petabyte, and `E' for exabyte.

       -o     Do not add sizes of subdirectories to parent directories.

       A file which has two links to it is only counted once.

SEE ALSO

       df(1)

NOTES