portmap(8) on Linux
The text 9f779c156338, as Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo) shipped it.
DARPA port to RPC program number mapper
Flags it lists
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-d -
-v