# Variables
GPIONUMBER=27
COUNT=0
STARTUPTIME=1
LEDBLINK=100

###############
# Exports pin 27
echo "Exporting pin 27"
gpio export 27 out

# Forces LED off
echo "Forcing LED off"
gpio -g write 27 0

# Sleeps until startup is finished
echo "Sleeping for $STARTUPTIME second(s) until system is started up..."
sleep $STARTUPTIME

# Command to grep ps for 'node'. If found, returns 0, else returns 1.
echo "Grepping 8th row of 'ps -ef' for 'node'. If found running, returns 0, else returns 1."
#ps ax | grep node | grep -q -v grep ; echo $?
ps -ef | awk '{print $8}' | grep node ; echo $?
###############

# Conditional code (If 0; ON, If 1; BLINK)
if [ $? -gt 0 ]
then
                echo "Node.js was found to be running. Powering LED on pin 27"
                gpio -g write 27 1

else
                echo "Node.js was not found to be running. Blinking LED $LEDBLINK times on pin 27"
                # Code to blink LED $LEDBLINK times
                while [ $COUNT -lt $LEDBLINK ]; do
                        gpio -g write 27 1
                        sleep 0.05
                        gpio -g write 27 0
                        sleep 0.05
                COUNT++
done
fi