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sudo sed -i '$ i echo "509" > /sys/class/gpio/export' /etc/rc.local
sudo sed -i '$ i echo "out" > /sys/class/gpio/gpio509/direction' /etc/rc.local
sudo sed -i '$ i echo "1" > /sys/class/gpio/gpio509/value' /etc/rc.local
Or
sudo nano /etc/rc.local
echo "509" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio509/direction
echo "1" > /sys/class/gpio/gpio509/value
[[File:Raspi-config-4-1.jpg]]