my-scripts/audio-control

#!/bin/bash

set -euo pipefail

if [ "$#" -eq 0 ]
then
	echo "Requires a command. Run with 'help' for a list of commands."
	exit 1
fi
if [ "$#" -gt 1 ]
then
	echo "Too many arguments. Run with 'help' for a list of commands."
	exit 1
fi

case $1 in
	"mute")
		pactl set-sink-mute 0 toggle
		;;
	"vol-up")
		pactl set-sink-volume 0 +5%
		;;
	"vol-down")
		pactl set-sink-volume 0 -5%
		;;
	"reset")
		pactl set-sink-volume 0 50%
		;;
	"help")
		echo "USAGE: audio-control <command>

Commands:
	mute          toggle mute
	vol-up        raise the volume
	vol-down      lower the volume
	reset         reset volume (to round number)
	toggle-port   toggle the output port
	help          show this help information"
		;;
	*)
		echo "Invalid command. Run with 'help' for a list of commands."
		exit 1;;
esac