LED_SH/blink_LED3.sh

#!/bin/bash
LED3_PATH=/sys/class/leds/beaglebone:green:usr3
 
function removeTrigger
{
         echo "none" >> "$LED3_PATH/trigger"
}
 
echo "The LED3 user is starting"
 if [ "$1" == "on" ]; then
         removeTrigger
         echo "1" >> "$LED3_PATH/brightness"
 elif [ "$1" == "off" ]; then
         removeTrigger
         echo "0" >> "$LED3_PATH/brightness"
 elif [ "$1" == "blink" ]; then
	removeTrigger
	echo "1" >> "$LED3_PATH/brightness"
	sleep 0.5
	echo "0" >> "$LED3_PATH/brightness"
	sleep 0.5
else 
        echo "invalid parameter."
        echo "To turn on the LED type: ./blink_LED3.sh on"
        echo "To turn off the LED type: ./blink_LED3.sh off"
        echo "To make the LED blink type: ./blink_LED3.sh blink"

 fi
 echo "Done"