w(1) on FreeBSD
The text 48d35d7d3492, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE shipped it.
display who is logged in and what they are doing
Flags it lists
-
-M -
-N -
-d -
-h -
-i -
-n