Before that, I used first generation Source Control Management SCM systems such as Revision Control System RCS , which was… painful. Then along came the Concurrent Versions System CVS in 1986, and then Subversion SVN in 2000. That same year saw BitKeeper , the once open source VCS that was Linux's first SCM. Also: Microsoft at 50: Its incredible rise, 15 lost years, and stunning comeback in 4 charts Before that, Torvalds had been content to keep Linux's code straight by hand
