[SOLVED] cli mpc volume not working

[Tim Curtis]

Do you mean the volume knob is not updating or the volume itself is not changing?

If you want the volume to change AND the knob to update then use vol.sh

pi@rp2:~ $ /var/www/vol.sh --help
Usage: vol.sh [OPTION] [VOLUME]
Change the volume and update the knob.

With no OPTION or VOLUME, print the current volume.
With just VOLUME, set current volume to VOLUME.

-up VOLUME value between 1 and 100
-dn VOLUME value between 1 and 100
-mute mute or unmute the volume
-restore set volume to current knob level
--version print the program version
--help print this help text