w(1) on macOS
The text 9ccb74b497dd, as Mac OS X 10.1.5, Mac OS X 10.1.4, Mac OS X 10.1.3, Mac OS X 10.1.2, Mac OS X 10.1.1, Mac OS X 10.1 shipped it.
present users are and what they are doing
Flags it lists
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-M -
-N -
-h -
-i -
-n