signaltest(8) on Linux
The text 18f2d2a406ee, as Debian 10 (Buster), Debian 9 (Stretch) shipped it.
signal roundtrip test software
Flags it lists
-
--breaktrace -
--help -
--loops -
--mlockall -
--priority -
--quiet -
--threads -
--verbose -
-b -
-l -
-m -
-p -
-q -
-t -
-v