Comment Re:C/C++ (Score 2, Insightful) 997
I agree about learning how to use libraries, I would also highly encourage you to learn how to use Linux its self. Knowing how the Kernel and the shell interact, and learning to use the shell well will give you a tremendous amount of power.
Linux is tremendously well written, as is bash. Unix, and by extension Linux, has a very good design philosophy. Learning them well will teach you far more about programming Linux than learning a particular programming language.