Nope, it's a custom OS. So is the Wii (U)'s or xbox's; they might use some BSD's...

		Aissen on Feb 8, 2013 \| parent \| context \| favorite \| on: Gabe Newell: Linux is a “Get-out-of-jail free pass... Nope, it's a custom OS. So is the Wii (U)'s or xbox's; they might use some BSD's parts (network stack ?) but I'm not sure. See http://en.wikipedia.org/wiki/OtherOS to clear the confusion.