df(1)

NAME
     df - report on free disk space and i-nodes

SYNOPSIS
     df special ...

EXAMPLES

     df /dev/ram         # Report on free RAM disk space

     df /dev/fd0 /dev/fd1
                         # Report on diskette space

     df                  # Report on all mounted devices

DESCRIPTION

     The amount of disk space and number of i-nodes, both  free  and  used  is
     reported.  If no argument is given, df reports on the root device and all
     mounted file systems.

SEE ALSO
     du(1), fstab(5).