> was thus able to officially call that version of Linux "UNIX(TM)" FTFY Being "UNIX" is about passing tests and paying money. Being "Unix" is about the ance

> was thus able to officially call that version of Linux "UNIX(TM)" FTFY Being "UNIX" is about passing tests and paying money. Being "Unix" is about the ancestry of the code and the design philosophy. Being "a Unix clone" happens where the ancestry of the code diverges. That's the way most of us who know something about the subject use the terms. If it is actually an exact duplicate of the original code, we tend to call that a "copy" -- not a "clone". For instance, "I have a copy of AT&T Unix at home."