#!/bin/sh STEP_BRIGHTNESS=10 NOTIF_DURATION=2 # Get current value current_brightness=$(brightness_get) # Compute new brightness value new_brightness=0 if [ ${current_brightness} -gt ${STEP_BRIGHTNESS} ]; then let new_brightness=${current_brightness}-${STEP_BRIGHTNESS} fi # Change brightness if [ ${new_brightness} -ne ${current_brightness} ]; then brightness_set ${new_brightness} fi # Notif notif_set ${NOTIF_DURATION} " BRIGHTNESS: ${new_brightness}%%" exit 0