On Wed, Jan 22, 2020 at 11:21 AM Clem Cole <clemc(a)ccc.com> wrote:
On Wed, Jan 22, 2020 at 12:55 PM Warner Losh <imp(a)bsdimp.com> wrote:
I thought the answer was "ARPANET"
since we had a NCP on 4th edition
Unix in late 1974 or early 1975 from the University of Illinois dating from
that time (the code in TUHS appears to be based on V6 + a number of
Because we can't ask Greg sadly, I think the Holmgren is the last around
that would know definitively and I've personally lost track of him.
The publication date for the ACM paper is November 1975. I think I misspoke
and you are right. The 4th edition was Nov 73, and 5th Edition was June 74
(6th was June 75). In order to meet deadlines for ACM publication, it most
likely was 5th Edition, but there's also earlier references to it.
That said, I don't think UofI had anything earlier than 5th edition (I
fairly sure that there were very few copies of 4th
outside of the Bell: i.e. Columbia, NYU and I thought Harvard; but I don't
think too many more than that). Lou Katz would be a better source than I,
but I was always under the impression that the number 5th editions, the
count was also a smaller 2 digit integer. 6th was where Unix began to
'spread' and by 7th, 'go viral.'
Berkeley's license was executed in January 74, so it might be on the list,
unless there was a big delay.
And to be honest, I personally thought that Steve and Greg did the ArpaNet
NCP work on V6, but it might have been v5th I suppose.
I did not know
about it until the 6th edition work. But, they were fairly early. BTW: I
thought the Rand PIPE code was also developed on 6th, but those also might
have been 5th.
The code we have is from the 6th edition (judging by diffs, though there's
some weird quirks between it and Dennis_v6, as well as a number of local
In addition to the Nov 1975 CACM paper, there's CAC 155, published by the
University of Illinois on 3/15/75 which pre-dates the 6th edition by a few
months. You can read it here
you'd like. There's also CAC 177, which covers the period of Jan 1, 1974 to
Dec 31, 1974 which references that Unix had been enhanced to add this after
the contract periopd. This this report may have been issued after CAC 155
and may not be proof of an earlier date (though the issue date in its
metadata in https://www.ideals.illinois.edu/handle/2142/34150
is 31 DEC
1974, it also reports activity through the end of the year so likely was
written later). There's also CAC 162 dated May 15, 1975 (
) that references UNIX
talking to the mulix machine via the ARPANET protocols.
RFC 681, dated March 18th, 1975, is another instance of an edited CAC 155
report (it seems, I've not looked at them exactly, just a quick glance)
that talks about this work. It's the earliest mention of Unix in an RFC
(the next one isn't until 2 years later for an email address for Dave
Crocker DCrocker@Rand-Unix in RFC 724 in May 1977 after which it explodes