a simple script to find and update your shelly devices over mqtt
just copy the shellies file to your home directory and update the connection information using:
cp shellies $HOME/.shellies
change the MQTT_TIMEOUT to the period your devices take to broadcast their status
change the UPDATE_TIMEOUT to the time between consecutive device updates, so you dont force your devices to update all at once
run the updateShellies.sh using ./updateShellies.sh