cw(1) on Linux
The text 6375b5fcf512, as Debian 9 (Stretch) shipped it.
sound characters as Morse code on the soundcard or console speaker
Flags it lists
-
--device -
--gap -
--help -
--infile -
--nocombinations -
--nocommands -
--nocomments -
--noecho -
--nomessages -
--system -
--tone -
--version -
--volume -
--weighting -
--wpm -
-V -
-c -
-d -
-e -
-f -
-g -
-h -
-k -
-m -
-o -
-p -
-s -
-t -
-v -
-w