mixer(1) on Linux
The text c5d88b7507ef, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
Flags it lists
-
-- -
-1 -
-2 -
-3 -
-4 -
-8 -
-A -
-N -
-R -
-W -
-a -
-c -
-f -
-h -
-l -
-s -
-u -
-v