Back in August 25, 1991, University of Helsinki student Linus Torvalds sent out his famous message:
I’m doing a (free) operating system (just a hobby, won’t be big and professional like gnu) for 386(486) AT clones.
From that simple introduction, we now have an operating system that is in use throughout the world today. It runs on desktops, servers, supercomputers, and mobile phones. And best of all, it’s (still) free.
Linux: you’ve come a long way, baby.