freebsd-src/usr.sbin/mixer
John-Mark Gurney eddcf96d7d major modifications to the mixer. currently it doesn't report errors
that it encounters (such as invalid device), but does print usage upon
this error...

but otherwise allows complex commands such as:
mixer -f /dev/mixer4 synth line 50 -rec mic +rec line =rec cd ^rec mix
1997-09-19 13:38:51 +00:00
..
Makefile
mixer.8
mixer.c