#!/bin/bash
# dunst change brightness notification

# set varialbe $brightness to current brightness level
brightness=$(cat /sys/class/backlight/acpi_video0/actual_brightness)

# set variable $max to current max brightness level
max=$(cat /sys/class/backlight/acpi_video0/max_brightness)

# calculate percentage
brightness_percent=$(((brightness * 100) / max))

# show brightness notification
dunstify -u low -i brightness -h string:x-dunst-stack-tag:Brightness -h int:value:"$brightness_percent" "Brightness: ${brightness_percent}%"