usage: df3 [-Tva]

example: df3
Filesystem    Mbytes      Used Available     Use% Mounted on
/dev/sdb1     15,017     4,833     9,421      34% /
/dev/sda1  1,877,846   120,848 1,661,609       7% /backup
/dev/sdc1  2,064,243   192,541 1,766,844      10% /data
/dev/sdb6    150,190    12,258   130,303       9% /export
nfs        2,047,872     7,889 2,039,984       1% /nfs/bigstor/fex
nfs           92,160    20,070    72,090      22% /nfs/rusnas/sw
/dev/sdd3  1,471,320     7,807 1,388,774       1% /spool