The df command reports the amount of ``disk free'' for each
file system. Use it to check how much space is left in your home
directory as well as in system directories like /tmp and /. The
Unix systems derived from BSD give a nice looking df report
showing the file system size, the amount used (in both kilobytes and
percentage), and the amount available. The Unix systems derived from
System V give a cruder df report showing the amount available
in the file system in blocks of 512-byte size.
With the
-t option, df shows the total number of blocks as
well:
sysV$ df -t System V disk free command.
/ (/dev/root ): 3912 blocks 17789 i-nodes
total: 201402 blocks 25168 i-nodes
bsd% df BSD disk free command. Filesystem kbytes used avail capacity Mounted on
/dev/sd0a 15671 7612 6491 54% /
/dev/sd0g 143119 120980 7827 94% /usr
/dev/sd0e 30655 2494 25095 9% /var
/dev/sd0d 10207 1784 7402 19% /tmp