alsactl(1) on Linux
The text 970f0be61a03, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
advanced controls for ALSA soundcard driver
Flags it lists
-
--background -
--debug -
--env -
--file -
--force -
--help -
--ignore -
--initfile -
--lock -
--lock-state-file -
--nice -
--no-init-fallback -
--no-lock -
--pedantic -
--period -
--pid-file -
--remove -
--runstate -
--sched-idle -
--syslog -
--version -
-E -
-F -
-I -
-L -
-O -
-P -
-R -
-b -
-c -
-d -
-e -
-f -
-g -
-h -
-i -
-l -
-n -
-p -
-r -
-s -
-v