[TUHS] Documents for UNIX Collections

arnold at skeeve.com arnold at skeeve.com
Fri Aug 12 21:15:52 AEST 2022

Paul Ruizendaal via TUHS <tuhs at tuhs.org> wrote:

> I’m interested in the journey of SysV IPC. So far I have established
> that these originated in CBUnix, with a lot of thinking on how to optimize
> these around the time that Unix 3.0/4.0/5.0 happened. They did not appear
> in Unix 3.0 / SysIII, and from the Unix 4.0 documentation I gather that
> it was not included there either.

I am not sure you can make that conclusion, as the 4.0 printed documents
did not include the programmer's manual; instead they gave out the
3.0 manual and there was a list of changes somewhere in the other doc.

Unfortunately, without actual 4.0 sources, it will always be a question.

I have this VERY vague memory that I saw IPC in 4.0, but I could
very easily be wrong... It was over 40 years ago, after all. :-)


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