#!/bin/sh

pulse=$(ps aux | grep pulseaudio | wc -l)

[ "$1" = "inc" ] && sign="+"
[ "$1" = "dec" ] && sign="-"

[ "$#" -eq 0 ] && exit 1

if [ "$pulse" -eq 2 ]; then
	for SINK in `pacmd list-sinks | grep 'index:' | cut -b12-`
	do
		pactl set-sink-volume $SINK "${sign}5%"
	done
else
	amixer -c 0 set Master "5%${sign}"
fi

killall -12 simplestatus