w(1) on FreeBSD
The text 920840eb2a8f, as FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE, FreeBSD 5.2.1-RELEASE, FreeBSD 5.2-RELEASE, FreeBSD 5.1-RELEASE, FreeBSD 5.0-RELEASE shipped it.
display who is logged in and what they are doing
Flags it lists
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-M -
-N -
-d -
-h -
-i -
-n