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For now, I don't really have to. I work on AVR based chips (mostly the ATmega and ATTiny) serves me well and I think I can get a job with this. But things change and I can adapt. I can still use linux if I want but I don't really want to until damn nVidia releases proper drivers.

[xradionut]

Wait till you start dealing with ARM based systems. You'll get a choice of expensive commercial tools or scavenger hunts to find the right libraries to work with gcc... :)