He named UNIX, he invented the "Hello, world!" program, he's the K in K&R (The C Programming Language), he's the K in AWK, and he's the co-author of other class

He named UNIX, he invented the "Hello, world!" program, he's the K in K&R (The C Programming Language), he's the K in AWK, and he's the co-author of other classic works like The UNIX Programming Environment and more recently The Go Programming Language. He's currently a CS professor at Princeton. EDIT: Why the downvotes? It's just terse, it's not at all rude.