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X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@minnie.tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Mark Williams Coherent was one I worked with on the PC many years ago.=20 > On May 1, 2022, at 11:34, Andrew Warkentin wrote: >=20 > =EF=BB=BFWhat was the first "clone" functional Unix (i.e. an OS not derive= d > from genetic Unix code but highly compatible with genetic Unix)? Idris > is the earliest such OS of which I am aware (at least AFAIK it's not a > genetic Unix), but was it actually the first? Similarly, which was the > first "outer Unix-like" system (i.e. one with strong Unix influence > but significantly incompatible with functional Unix)? Off the top of > my head the earliest such system I can think of is Thoth (which > predates Idris by almost 2 years), but again I'm not sure if it was > actually the first.