For what it's worth, if I remember correctly, 4.3BSD was one of the major contributions to SVR4. I suspect that if it hadn't been, nobody would've bought it. From what I've read, people bought SVRx for the source code license, and then bought the 4.xBSD for the reliability and usability. And yes, it would be nice if the entire SysVRx source trees were released under a suitable FOSS license; but I think the usefulness of such a gesture would be in stymieing any future "The SCO Group" shenanigans, and I don't know that such acts of self-preservation are quite the flavour of the month with modern software companies. Wesley Parish Quoting Michael Kerpan : > On Mon, Jul 11, 2011 at 6:29 AM, Michele Ghisolfo > wrote: > >  Hi, > > > >  I'm currently reading J. Lion's commentary of Unix Code Level Six. >  It > > is the most useful commentary to operating system kernel I have ever > > read. > > > >  It would be really useful to also have the source code of SVR4 > kernel > > for Intel x86.  Does anyone have that? > > > > _______________________________________________ > > TUHS mailing list > > TUHS at minnie.tuhs.org > > https://minnie.tuhs.org/mailman/listinfo/tuhs > OpenSolaris is derived from SVR4 and much of the userland stuff is > still quite similar to the original release. Sadly, System V as a > whole is still regarded as a commercial product and no source is > available. If you want the source code for a decent early-90s Unix > implementation, I'd take a look at 4.4BSD. It's not SVR4, but it's > from the same era and has many of the same abilities. > > Mike > _______________________________________________ > TUH S mailing list > TUHS at minnie.tuhs.org > https://minnie.tuhs.org/mailman/listinfo/tuh s > "Sharpened hands are happy hands. "Brim the tinfall with mirthful bands" - A Deepness in the Sky, Vernor Vinge "I me. Shape middled me. I would come out into hot!" I from the spicy that day was overcasked mockingly - it's a symbol of the other horizon. - emacs : meta x dissociated-press