gpsmon(1) on Linux
The text 947cea7002b3, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
real-time GPS packet monitor and control utility
Flags it lists
-
--debug -
--help -
--list -
--logfile -
--nmea -
--nocurses -
--type -
-? -
-L -
-a -
-d -
-h -
-l -
-n -
-t