#!/bin/bash

case $1 in
    0) notify-send -t 1500 "Layer 0" "Base/QWERTY" ;;
    1) notify-send -t 1500 "Layer 1" "Navigation/Numbers" ;;
    2) notify-send -t 1500 "Layer 2" "Symbols" ;;
    3) notify-send -t 1500 "Layer 3" "Function Keys" ;;
    *) notify-send -t 1500 "Unknown Layer" ;;
esac