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**<code>lpstat -p -d</code>
*lp help http://www.cups.org/documentation.php/options.html
=GPIO=*pin over-voltage protection circuits - http://elinux.org/RPi_Tutorial_EGHS:GPIO_Protection_Circuits*light example - https://projects.drogon.net/raspberry-pi/gpio-examples/tux-crossing/gpio-examples-1-a-single-led/**uses wiringPI, command line tool, for ex:<code>gpio</code>**installed using git - https://projects.drogon.net/raspberry-pi/wiringpi/download-and-install/==through python==*follow adafruit - http://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/overview**Rpi.GPIO - **requires python-dev**python-rpi.gpio*https://code.google.com/p/raspberry-gpio-python/
=untested=
*Processing - http://forum.processing.org/topic/processing-on-raspberry-pi