# mount.lustre --version
mount.lustre: unrecognized option '--version'
...
# lfs --version
Try interactive use without arguments or use one of:
"setstripe"
"getstripe"
...
# lctl --version
Try interactive use without arguments or use one of:
"===== metacommands ======="
"--device"
...

# lfsck --version
lfsck 1.42.6.wc2 (10-Dec-2012)

usage: lfsck [-cdfhlnv] --mdsdb mdsdb --ostdb ostdb1 [ostdb2 ...] filesystem

	-m|--mdsdb mdsdb  MDS database from e2fsck --mdsdb
	-o|--ostdb ostdb  OST databases from e2fsck --ostdb
	filesytem         full path of lustre mountpoint
...
# echo $?
16