DU(1)                                                       DU(1)

     NAME
          du - disk usage

     SYNOPSIS
          du [ -anstu ] [ -b blocksize ] [file ...]

     DESCRIPTION
          Du writes to standard output the total size of files speci-
          fied as arguments.  Directories are recursively tallied.  A
          summary line is produced for each argument file and subdi-
          rectory.  If no filenames are provided, the command operates
          on the current directory.

          Output sums are rounded up to the nearest 1k unit (1024
          bytes).  By default, storage is assumed to be quantised in
          units of 1024 bytes.  The -b option sets a different
          blocksize for quantisation, optionally suffixed by k for
          units of kilobytes; output is still in 1k units.

          Du accepts the following options:

          -a   Output usage information for all subordinate files, not
               just directories.

          -n   Output just the filenames (but see the -t option
               below); implies -a.

          -s   Print only the summary line for each file.

          -t   Display the last-modified time for each file, not its
               size; when used with the -n option, outputs the file-
               name, modification time (seconds since the epoch), size
               (in bytes), and checksum.  The checksum field is always
               0; it is a place-holder for a value computed by another
               command in a pipeline.

          -u   Display the last-accessed time for each file, not its
               size.

     SOURCE
          /appl/cmd/du.b

     SEE ALSO
          sh(1), sys-stat(2)