df—summarizes free disk space

df [-aikPv] [-t  fstype] [-x fstype] [--all][--inodes][--type=fstype]

   [--exclude-type=fstype][--kilobytes] [--portability] [--print-type]

   [--help] [--version] [filename...]

The df command shows information about the filesystem on which each file resides, or all filesystems by default.

Example A.21.

df

Filesystem         1024-blocks  Used Available Capacity

Mounted on

/dev/hda5            1787100 1115587   579141     66%   /