ntpshmmon(1) on Linux
The text 668d8c2ec7fc, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
capture samples from gpsd or other ntpd refclock sources
Flags it lists
-
--count -
--help -
--offset -
--rmshm -
--seconds -
--verbose -
--version -
-? -
-V -
-h -
-n -
-o -
-s -
-t -
-v