[TUHS] networking on unix before uucp

Dan Cross crossd at gmail.com
Sat Aug 23 01:18:23 AEST 2014

Unix was on the ARPAnet circa 1975 (if not earlier):

V6 was "released" in May 1975, and that document was also published in May
1975 and says that the software had been running for about a month, so it's
entirely possible that the ARPAnet Unix work was done before V6 (or perhaps
they were an early test site: I don't know what the policies were around
that).  It's been many years since I've read RFC681 closely and from my
quick skim just now, I don't think they say what version of Unix they're
running.  It's clear from the RFC that they had been running Unix for more
than a month given the description of their site, and if I had to hazard a
guess I'd say they were running V5; perhaps heavily patched.  I idly wonder
if any of that work has survived; it would be interesting to see an
ARPAnet/NCP implementation for early Unix.

But to address your question yes, Unix was certainly networked well before
UUCP emerged in V7.

        - Dan C.

On Thu, Aug 21, 2014 at 11:42 PM, Mark Longridge <cubexyz at gmail.com> wrote:

> Hi folks,
> I was wondering if Unix had any form of networking before uucp
> appeared in Unix v7. It would be interesting to know if one could pass
> a file from one Unix v5 machine to another without having to store it
> on a magnetic tape.
> There's some reference to a mysterious "Spider Interface" in the Unix
> v5 manual. It seems to have something to do with DR-11B (which is a
> general purpose direct memory access interface to the PDP-11 Unibus).
> There's also reference to the "Spider line-printer" :)
> Mark
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