#!/bin/sh

if [ -z "$1" ]
	then
 
		times=$2
		time=$3
 
		if [ -z "$2" ]
		then
			times=3 
		fi
 
		if [ -z "$3" ]
		then
			time=0.2 
		fi
 
    	        for i in `seq 1 $times`;
    	        do
    		        $0 toggle;
                        sleep $time;
                        $0 toggle;
                        sleep $time
    	        done    
else if [ $1 = "toggle" ]
        then
                status=`cat /proc/acpi/ibm/light | grep status | awk '{print $2}'`

                if [ $status = "on" ]
                then
                        echo off > /proc/acpi/ibm/light
                else
                        echo on > /proc/acpi/ibm/light
                fi
        fi
fi
exit 0