#!/bin/sh
dunstctl close-all
case "$1" in
  "up")
    brightnessctl set "$2"%+;;
  "down")
    brightnessctl set "$2"%-;;
esac
CURRENT=$(brightnessctl get)
MAX=$(brightnessctl max)
BRIGHTNESS=$(echo "scale=2; ("$CURRENT"/"$MAX")*100" | bc | sed s/\.00$//g)
notify-send "Brightness set to "$BRIGHTNESS%"" -i :