#!/bin/bash

# get the default sink
default_sink="$(pactl info | grep -e "Default Sink:" | awk '{print $3}')"
echo "current default: $default_sink"

# get the sinks
sinks="$(pactl list sinks short | awk '{print $2}')"

# filter out the default sink
not_active="$(echo "$sinks" | grep -v -e "$default_sink")"

# get the sink after the dafault one
next_sink="$(echo -e "$sinks\n$not_active" | grep -e "$default_sink" -A 1 | tail -n 1 )"

# set the new default-sink
pactl set-default-sink "$next_sink"
echo "new default: $next_sink"