It was 22 years ago on Sunday that Linus Torvalds announced in a newsgroup posting that he was creating a free operating system, a message he echoed in his announcement Sunday of the latest Linux kernel release candidate. "Hello everybody out there using minix - I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones," Torvalds wrote on August 26, 1991, asking people to send in feature requests.