Marc Rochkind started his career at Bell Labs in 1970, where he was lucky enough to get into UNIX at its infancy. His best-known invention back then was the Source Code Control System, the ancestor of all modern version-control systems. He left Bell Labs in the early 1980s when personal computers started to get interesting. Since then, he has been a writer, teacher, consultant, engineering manager, and entrepreneur (having founded XVT Software, which sold a GUI-portability development tool). Now he's back to being a writer, and is a big fan of Linux, open source, and web-based applications.