How to pass arguments to a program from a web page?

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http://stackoverflow.com – I'll be the first to admit that my programming experience and skill in web services is practically non-existent. I usually program things that run completely isolated or locally, with either C or assembly. I'm proficient enough to get a website going, with some basic authentication and directory read access on the system. That's about it. I'm trying to do a project that's well outside of my comfort zone and get some experience in controlling stuff remotely/via web. Using a Raspberry Pi running Debian, I'm running a program on it in C that takes in information such as video and UART data, doe (HowTos)