#! /bin/bash

set -e

if [ "$1" != "" ]
then
    value="$1"
else
    value="50%"
fi

for sink in $(pactl list sinks | grep '^Sink #' | awk -F\# '{print $2}')
do
    pactl set-sink-mute   "$sink" false
    pactl set-sink-volume "$sink" "$value"
done