#!/bin/bash

if [[ $EUID -ne 0 ]]; then
    echo "this program requires root user" 2>&1
    exit 1
fi

while :
do
echo "------------"

caps=`cat /sys/class/leds/input0::capslock/brightness`
echo -n "caps: "

if [ $caps == 1 ]
then
	echo "on"
	echo 0 >/sys/class/leds/input0::capslock/brightness
else
	echo "off"
	echo 1 > /sys/class/leds/input0::capslock/brightness
fi

num=`cat /sys/class/leds/input0::numlock/brightness`
echo -n "num: "
if [ $num == 1 ]
then
	echo "on"
	echo 0 > /sys/class/leds/input0::numlock/brightness
else
	echo "off"
	echo 1 > /sys/class/leds/input0::numlock/brightness
fi

scroll=`cat /sys/class/leds/input0::scrolllock/brightness`
echo -n "scroll: "
if [ $scroll == 1 ]
then
	echo "on"
	echo 0 >  /sys/class/leds/input0::scrolllock/brightness
else
	echo "off"
	echo 1 > /sys/class/leds/input0::scrolllock/brightness
fi

sleep 1
done