> Interesting post and it looks like you did a lot > of work. Wish others had done the same. I don’t > think we disagree on Copyright it does protect the > expression of ideas. The real question is “was > Linux from scratch or did it borrow from UNIX” as > SCO claims and evidently IBM admits (it was this > admission that started this whole mess in the > first place, well coupled with a falling out > between IBM and SCO). . First: you claim IBM admits that Linux borrowed from Unix. Prove this. What exactly did "IBM" say and who from IBM made the statement? . Second: Have you ever heard of POSIX? It's an international standard for an API to implement a Unix-like operating system. If you fully implement POSIX, you get a Unix compatible kernel. POSIX has been an evolving standard for over 30 years.