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From: devine@shodha.dec.com (Bob Devine)
Newsgroups: comp.unix.wizards
Subject: Re: SysV IPC:  eyesore or misunderstood art?
Message-ID: <185@shodha.dec.com>
Date: 28 Apr 89 16:59:10 GMT
References: <28901@ucbvax.BERKELEY.EDU> <837@mtxinu.UUCP> <8015@june.cs.washington.edu>
Organization: Digital Equipment Corp. - Colorado Springs, CO.
Lines: 9


  The story I heard is that System V IPC comes from a version
that the folks at AT&T/Columbus put together for operations support.
Even before System III, they had a special version of Unix that
had an implementation of messages, shared memory and semaphores. 
A more general IPC was added to System V for them just so there
wouldn't be a need to have two Unixes supported.

Bob Devine