Compulab Fitlet2 LED Bash Script, more at https://paste.mcdemarco.net/m/149045

led.sh

#!/bin/bash

# GPIO Colors
# 435 = 1 green
# 436 = 1 yellow
# 437 = 2 green
# 438 = 2 yellow

# USAGE: led.sh [LED ID] [STATE]
# Example: sudo ./led.sh 1 yellow

# argument check
if [ $# != 2 ]; then
	echo "You are missing arguments: [1|2] [green|yellow|off]"
	exit
fi

# sudo check
if [ "$EUID" -ne 0 ]; then
	echo "Please run with sudo"
	exit
fi

# capture arguments
if [ $2 = "green" ] && [ $1 = 1 ]; then
	sudo echo 435 > /sys/class/gpio/export
	sudo echo 1 > /sys/class/gpio/gpio435/value
	sudo echo 435 > /sys/class/gpio/unexport
elif [ $2 = "yellow" ] && [ $1 = 1 ]; then
	sudo echo 436 > /sys/class/gpio/export
	sudo echo 1 > /sys/class/gpio/gpio436/value
	sudo echo 436 > /sys/class/gpio/unexport
elif [ $2 = "off" ] && [ $1 = 1 ]; then
	sudo echo 435 > /sys/class/gpio/export
	sudo echo 0 > /sys/class/gpio/gpio435/value
	sudo echo 435 > /sys/class/gpio/unexport
	sudo echo 436 > /sys/class/gpio/export
	sudo echo 0 > /sys/class/gpio/gpio436/value
	sudo echo 436 > /sys/class/gpio/unexport
elif [ $2 = "green" ] && [ $1 = 2 ]; then
	sudo echo 437 > /sys/class/gpio/export
	sudo echo 1 > /sys/class/gpio/gpio437/value
	sudo echo 437 > /sys/class/gpio/unexport
elif [ $2 = "yellow" ] && [ $1 = 2 ]; then
	sudo echo 438 > /sys/class/gpio/export
	sudo echo 1 > /sys/class/gpio/gpio438/value
	sudo echo 438 > /sys/class/gpio/unexport
elif [ $2 = "off" ] && [ $1 = 2 ]; then
	sudo echo 437 > /sys/class/gpio/export
	sudo echo 0 > /sys/class/gpio/gpio437/value
	sudo echo 437 > /sys/class/gpio/unexport
	sudo echo 438 > /sys/class/gpio/export
	sudo echo 0 > /sys/class/gpio/gpio438/value
	sudo echo 438 > /sys/class/gpio/unexport
fi