medusa(1) on Linux
The text c991f7dac77e, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
Parallel Network Login Auditor
Flags it lists
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-C -
-F -
-H -
-L -
-M -
-O -
-P -
-R -
-T -
-U -
-V -
-b -
-d -
-e -
-f -
-g -
-h -
-m -
-n -
-p -
-q -
-r -
-s -
-t -
-u -
-v -
-w