cw(1) on Linux
The text 25401d91dbac, as Debian 4.0 (Etch) shipped it.
sound characters as Morse code on the soundcard or console speaker
Flags it lists
-
--cdevice -
--file -
--gap -
--hz -
--mdevice -
--nocombinations -
--nocommands -
--nocomments -
--noecho -
--nomessages -
--sdevice -
--sound -
--tone -
--volume -
--weighting -
--wpm -
-c -
-d -
-e -
-f -
-g -
-k -
-m -
-o -
-p -
-s -
-t -
-v -
-w -
-x -
-y