tqsl(1) on Linux
The text 4cd9660a9f08, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
digitally sign amateur radio contact logs
Flags it lists
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-d -
-i -
-l -
-o -
-q -
-s -
-t -
-u -
-v -
-x