--- /dev/null
+#! /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