alsaloop(1) on Linux
The text ac7a9431c276, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
command-line PCM loopback
Flags it lists
-
--daemonize -
--help -
--nblock -
--resample -
--verbose -
--xrun -
-U -
-b -
-d -
-h -
-n -
-v