Pulseaudio quick audio output / sink switcher script, toggles when two outputs available, shows zenity list when more outputs available

pasinktoggle

#!/bin/bash
# Pulseaudio sink switcher
# Required commands: notify-send, zenity
SINK_LIST=$(pacmd list-sinks | grep -E "(index:|device.description)" | xargs -n2 -d'\n')
COUNT=$(echo "$SINK_LIST" | wc -l)
NEW_SINK=""
if [ $COUNT -eq 0 ]; then
  notify-send "No audio sinks available"
elif [ $COUNT -eq 1 ]; then
  notify-send "There's just one audio sink available"
elif [ $COUNT -eq 2 ]; then
  # Toggle current sink
  NEW_SINK_LINE=$(echo "$SINK_LIST" | grep -v "* index" | head -1)
  notify-send "Switching audio sink to \"$(echo "$NEW_SINK_LINE" | cut -d \" -f2)\""
  NEW_SINK=$(echo "$NEW_SINK_LINE" | awk '{print $2}')
elif [ $COUNT -gt 2 ]; then
  # Show zenity menu
  CURRENT_SINK_LABEL=$(echo "$SINK_LIST" | grep "* index" | cut -d \" -f2)
  NEW_SINK=$(echo "$SINK_LIST" | grep -v "* index" | sed -r 's/.*([0-9]+).*\"([^"]+)\"/\1\n\2/g' | zenity --list --title="Choose the new audio sink" --text="Currently used audio sink: \"$CURRENT_SINK_LABEL\"" --column="i" --column="Available Sinks" --hide-column=1 --width=400 --height=200)
fi
[ -n "$NEW_SINK" -a $NEW_SINK -eq $NEW_SINK ] && pacmd set-default-sink $NEW_SINK