#!/bin/bash # min_brightness=0 # current_brightness=$(cat /sys/class/backlight/radeon_bl0/brightness) # # # current_brightness=$(expr $current_brightness - 12) # current_brightness=$((current_brightness - 5)) # # if [ $current_brightness -ge $min_brightness ] # then # echo $current_brightness > /sys/class/backlight/radeon_bl0/brightness # notify-send -t 500 -i dialog-information "Brightness $current_brightness" # else # current_brightness=$min_brightness # echo $current_brightness > /sys/class/backlight/radeon_bl0/brightness # notify-send -t 500 -i dialog-information "Brightness $current_brightness" # fi brightnessctl set 5- current_brightness=$(brightnessctl get) notify-send -t 500 -i dialog-information "Brightness $current_brightness"