Allows to change PCM volume by quick vol command.
This script is just a mapping for amixer tool.
You can choose audio device by VOL_DEVICE environmental variable (default is "PCM").
alsa-utils package required for this script usage.
Run without arguments to see inline help:
Usage:
vol [unmute|on|u]
Unmute volume.
vol [mute|off|m]
Mute volume.
vol [toggle|t]
Toggle volume (mute/unmute).
vol [status|s]
Show amixer's status. Use the mapped volume for evaluating the
percentage representation like alsamixer, to be more natural for human
ear.
vol [+-]VALUE[%]
Set volume level to VALUE and unmute.
"%" sign is optional, VALUE is always percentage.
If leading "+" or "-" specified volume will be incremented or
decremented correspondingly and resulting value will be printed to
stdout.
vol [+|up|-|down]
Just an alias for previous command with VALUE=5.