So buried in amongst the requia for Steve Jobs, I find that Dennis Ritchie
also passed away this week
This would be the Dennis Ritchie who, along with Ken Thompson, basically invented the UNIX operating system (which, BTW, the later versions of MacOS are built on top of) and also
along with Brian Kernighan, invented the C programming language.
Yeah, same guy.
Go read the Anti-Forward
that he wrote for the Unix-Haters Handbook
(you can get the entire book here