Origin for each line in mixer.init.mk from check-in 7a1e7f4a58:

7a1e7f4a58 2019-10-21    1: mixers=${:!find /dev -name 'mixer*'!:S/\/dev\///}
7a1e7f4a58 2019-10-21    2: 
7a1e7f4a58 2019-10-21    3: mixer: mount cleanvar
7a1e7f4a58 2019-10-21    4: 	echo "MRC:$@> Restoring levels."
7a1e7f4a58 2019-10-21    5: .for mixer in ${mixers}
7a1e7f4a58 2019-10-21    6: 	-test -f /var/db/${mixer}-state && mixer -f /dev/${mixer} `cat /var/db/${mixer}-state`
7a1e7f4a58 2019-10-21    7: .endfor