w(1) on FreeBSD
The text 6efecf1ca7ea, as FreeBSD 4.2-RELEASE, FreeBSD 4.1.1-RELEASE, FreeBSD 4.1-RELEASE, FreeBSD 4.0-RELEASE shipped it.
display who is logged in and what they are doing
Flags it lists
-
-M -
-N -
-d -
-h -
-i -
-n