#!/bin/sh
if [ "x$1" != "x" ]; then
  for bl_path in /sys/class/backlight/*
  do
    max=$(cat $bl_path/max_brightness)
    value=$(echo $max*$1/100 | bc)
    echo $value > $bl_path/brightness 2>/dev/null
    if [ $1 -ne 0 ]; then
      echo $1 > /var/lib/shelli/brightness.conf
    fi
  done
else
  cat /var/lib/shelli/brightness.conf
fi
