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From: mpl@sfsup.UUCP (M.P.Lindner)
Newsgroups: comp.unix.questions
Subject: Re: Three-way write
Message-ID: <2241@sfsup.UUCP>
Date: Wed, 21-Oct-87 18:06:46 EDT
Article-I.D.: sfsup.2241
Posted: Wed Oct 21 18:06:46 1987
Date-Received: Sat, 24-Oct-87 16:42:07 EDT
References: <3154@uwmcsd1.UUCP> <15100001@bucc2> <273@ddsw1.UUCP>
Organization: AT&T-IS, Summit N.J. USA
Lines: 22
Summary: ever hear of ttys?

In article <273@ddsw1.UUCP>, karl@ddsw1.UUCP writes:
> In article <15100001@bucc2> brian@bucc2.UUCP writes:
> >> I'm looking for C source code to a three (or more) way write program.
> >> Does something like this exist??
> >  I am currently writing such a program. It will only run on SysV, though,
> >since I am using shared memory.
> 
> I've posted a up-to 15 user chat program for System III and later (it uses
> named pipes) to alt.sources a while ago.  It's written for System V, and
> would have to be hacked for other systems, but should be pretty close...

Has anyone ever considered writing a "write" program that writes to ttys?
Amazingly enough, this is how the two way "write" program does it, and guess
what?  It's portable!  I know there are certain drawbacks, like each user
must know all the other users in the conversation, but guess what?  It's
portable.

Sorry to sound facetious, but I'm sick of porting little programs like "this
does a cat backwards, and uses semaphores."  Peace.

Mike Lindner
attunix!mpl