[9fans] Df command in Plan9?

["Mark C. Otto" <Mark_Otto@FWS.Gov>]

Having a 500mb disk drive, I was looking to check how much disk space I had
left.  I haven't been able to find an equivalent of the unix df command to find
the space used and available,

df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sda5              4546016   1650964   2664120  38% /
/dev/sda2                23333      6149     15980  28% /boot
/dev/sda1              2036224   1819008    217216  89% /mnt/win
/dev/sdb1              8947440   2234552   6712888  25% /mnt/win2
parula:/data           8124357   7013836   1029278  87% /mnt/parula/data
parula:/space          1372362   1155507    161961  88% /mnt/parula/space
/dev/fd0                  1423      1252       171  88% /mnt/floppy

Du on a device does not even get at the space used,

du #sdC0

For a terminal, I would have expected something in disk/kfscmd.  For the
fileserver, am I missing something in fs(8)?

Thanks,
Mark