Ah, yeah, so you would need to use nano in combination with the sudo command, which will give pi root access. So something like this for the printer_on.sh script:
sudo nano /usr/local/bin/printer_on.sh
... type or paste in the script contents... write out, and exit...
sudo chmod a+rx /usr/local/bin/printer_on.sh
Then you should be able to type 'printer_on.sh' as the pi user, and turn on that pin.