du(1)

NAME
     du - print disk usage

SYNOPSIS
     du [-as] [-l n] dir ...

OPTIONS

     -a   Give usage for all files

     -l   List up to n levels of subdirectories

     -s   Summary only

EXAMPLES

     du dir              # List disk space used by files in dir

     du -s dir1 dir2     # Give summaries only

DESCRIPTION

     Du examines one or more  directories  and  prints  the  amount  of  space
     occupied by the files in those directories and their subdirectories.

SEE ALSO
     df(1).