#!/bin/bash

echo on > /proc/acpi/ibm/light
sleep 0.2
echo off > /proc/acpi/ibm/light
sleep 0.2
echo on > /proc/acpi/ibm/light
sleep 0.2
echo off > /proc/acpi/ibm/light
sleep 0.2
echo on > /proc/acpi/ibm/light
sleep 0.2