From mboxrd@z Thu Jan  1 00:00:00 1970
From: doug@cs.dartmouth.edu (Doug McIlroy)
Date: Sun, 05 Mar 2017 22:50:22 -0500
Subject: [TUHS] [TUHS} communication files: interprocess IO before pipes
Message-ID: <201703060350.v263oM7u024080@coolidge.cs.Dartmouth.EDU>

It's not really Unix history, but Dartmouth's "communication files"
have so often been cited as pipes before Unix, that you may like
to know what this fascinating facility actually was. See
http://www.cs.dartmouth.edu/~doug/DTSS/commfiles.pdf