From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id de0a081c for ; Wed, 22 Jan 2020 19:01:25 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id D55B79C207; Thu, 23 Jan 2020 05:01:23 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 8A30A9C14A; Thu, 23 Jan 2020 05:00:57 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bsdimp-com.20150623.gappssmtp.com header.i=@bsdimp-com.20150623.gappssmtp.com header.b="MB1MqbrL"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 546B79C14A; Thu, 23 Jan 2020 05:00:54 +1000 (AEST) Received: from mail-qk1-f170.google.com (mail-qk1-f170.google.com [209.85.222.170]) by minnie.tuhs.org (Postfix) with ESMTPS id 933999C102 for ; Thu, 23 Jan 2020 05:00:53 +1000 (AEST) Received: by mail-qk1-f170.google.com with SMTP id c17so788356qkg.7 for ; Wed, 22 Jan 2020 11:00:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=asdN+MWVUklVZd+YFkI7D5nkVMFrPL9+N+DiglLCb4k=; b=MB1MqbrLuDBgEYhBfkaN0lAzX1eyv8h/FaymlqQksKXUl3/exIShMlW1LljTvUL65W 35oKgVfIU4F/T4Ahcy0n6lN8o5LLqRUn9BgqGxKUmxQhhfwUhWkOTziGDkzDplyjTzC8 2iSxNS9PmygzEKIifEq14S6y753eLlOdpNh8OcreZwNT2vUeUUgs1mcx9nyaEqV6qVNZ 9ZkajFy56VpprYooP4J0gdpqxBOJe8eOoR/bnYClNHp4FQbaWjyxNd+xYgmyk8a4ri2V VWrCIcXK8W3AgGpwoD+9iOs8/4FJ5faGfqPbVDD/uIZtt+tvjxJBAHTYi41GodsDwAmy RF5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=asdN+MWVUklVZd+YFkI7D5nkVMFrPL9+N+DiglLCb4k=; b=uBMITiOGlkeLTBiWMt687W+fxGgNn9q2jzZxo2Lu5fuEKu7qUu3GCH2aOeVW/+hXcF irUxgME/B+X/RYLLbPxTy3r5gaXY5SNmDClNvJEIx6g/EJtfltIKG9wiYK2bEEdBtnEi ttSCK3QQ6SltKRW9uFLsDPrtmqti1EDofcysgI/qqUw0No4LfyDPjvTs648OHVPbo2sT BtXlwMMyPzPnJF/qLsZQ7KVqw1zfOWOTp/6qPR3MbvTkyMkVPQUuLgs7EBcsJjCGrtrP RBfpbVxa9ji8lc/groekf9D01t3uWv9vwDyj9Pj+ET7nLvOcpAkWaL2q8eFhMhvnWzbb n4UQ== X-Gm-Message-State: APjAAAXckiqR21DmPYoh6N26hkTCLHmOxa/AhMvzgzyceIIa1uIvzK/w jxZnHk/+QML5mbd8s2yEbmaP09csCrTTPliuSeS/vg== X-Google-Smtp-Source: APXvYqwi2ADbBpcOUlBaUtRqkKyV50b1CuG6F2qrfLBhp3jPdBtvzG28RFnBH9YrcwX/SuzIvDi1RtMG5JxxGMFHvAI= X-Received: by 2002:a37:a80a:: with SMTP id r10mr10941582qke.240.1579719652592; Wed, 22 Jan 2020 11:00:52 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Warner Losh Date: Wed, 22 Jan 2020 12:00:41 -0700 Message-ID: To: Dan Cross Content-Type: multipart/alternative; boundary="000000000000bce1af059cbf24a0" Subject: Re: [TUHS] Unix quix X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000bce1af059cbf24a0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Jan 22, 2020 at 10:54 AM Warner Losh wrote: > > > On Wed, Jan 22, 2020 at 7:59 AM Dan Cross wrote: > >> Btw, the answer for #16 is `cagbef`: but `g` is not an option. I would >> think the answer would be `cafbde`. Apparently in the original, option >> '(d)' is missing; one imagines that was to trick the unwary who failed t= o >> adequately read the question. >> > > I think this is wrong: > 16. Q: Sort the following into chronological order: a) PWB 1.2, b) V7, c= ) > Whirlwind, d) System V, e) 4.2BSD, f) MERT. > A: cagbef > Whirlwind is a ringer. > > So the MERT ACM paper is 1975. The BSTJ is July/Aug 1978 (received Feb > 1978). Somewhere I read (don't have a handy reference for it) that MERT > ported V4 as a supervisor process which puts it in 1974 or so. In any > event, this predates everything except Whirlwind which I can't find a pap= er > for. > PWB 1.2 is based on V6 + stuff. PWB 1.0 was released 1977, but we don't > have an extant 1.2 tape to verify dates with, but 1978 wouldn't be > unreasonable. > We know 7th Edition was released Jan 1979 (PWB 2.0 was released, 1980 > sometime) > System V was released January 1983 > 4.2BSD was released September 1983 (4.1c was released in 1982 though :) > > So that would make the right answer c f a b d e > > Even DMERT for the 3B20 was released in January 1983 (or the IEEE paper > for it was released then), so it can't be last. > > I also have questions about this: > > 81. Q: What was the first Unix network? > A: spider > You thought it was Datakit, didn't you? But Sandy Fraser had an earlier > project. > > When did Alexander G Fraser's spider cell network happen? For that matter= , > when did Datakit happen? I can't find references to either start date on > line (nor anything on spider except for references to it in Dr Fraser's > bio). I can find references to Datakit in 1978 or so. > Oopa, spoke one google search too soon. I found this: "Sandy (A. G.) Fraser devised the Spider local-area ring (v6) and the Datakit switch (v7) that have served in the lab for overadecade. Special services on Spider included a central network file store, nfs, and a communication package, ufs. Datakit, a =E2=80=98=E2=80=98central office=E2= =80=99=E2=80=99 for data communication, gav e added impetus to research in distributed computing. Fraser undertook the Unix Circuit Design System (see CDL in section 4.3) to support his hardware projects" in "A Research UNIX Reader: Annotated Excerpts from the Programmer=E2=80=99= s Manual, 1971-1986" by Doug Mcillroy. > I thought the answer was "ARPANET" since we had a NCP on 4th edition Uni= x > in late 1974 or early 1975 from the University of Illinois dating from th= at > time (the code in TUHS appears to be based on V6 + a number of patches). > > Warner > > >> - Dan C. >> >> >> On Wed, Jan 22, 2020 at 4:32 AM Rob Pike wrote: >> >>> The answers are up: >>> >>> https://commandcenter.blogspot.com/2020/01/unix-quiz-answers.html >>> >>> -rob >>> >>> --000000000000bce1af059cbf24a0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Wed, Jan 22, 2020 at 10:54 AM Warn= er Losh <imp@bsdimp.com> wrote:=


On Wed, Jan 22, 2020 at 7:59 AM Dan Cross <crossd@gmail.com> wr= ote:
Btw, the answer for #16 is `cagbef`: but `g` is not an option. I= would think the answer would be `cafbde`. Apparently in the original, opti= on '(d)' is missing; one imagines that was to trick the unwary who = failed to adequately read the question.

I think=C2=A0this is wrong:
16. Q: =C2= =A0Sort the following into chronological order: a) PWB 1.2, b) V7, c) Whirl= wind, d) System V, e) 4.2BSD, f) MERT.
Whirlwind is a ringer.

So the MERT ACM p= aper is 1975. The BSTJ is July/Aug 1978 (received Feb 1978). Somewhere I re= ad (don't have a handy reference for it) that MERT ported V4 as a super= visor process which puts it in 1974 or so. In any event, this predates ever= ything except Whirlwind which I can't find a paper for.
PWB 1= .2 is based on V6=C2=A0+ stuff. PWB 1.0 was released 1977, but we don't= have an extant 1.2 tape to verify dates with, but 1978 wouldn't be unr= easonable.
We know 7th Edition was released Jan 1979 (PWB 2.0 was= released, 1980 sometime)
System V was released January 1983
4.2BSD was released September 1983 (4.1c was released in 1982 though = :)

So that would make the right answer c f a b d= =C2=A0e

Even DMERT for the 3B20 was released in Ja= nuary 1983 (or the IEEE paper for it was released then), so it can't be= last.

I also have questions about this:

81. Q: =C2=A0What was the first Unix netwo= rk?
A: spider
You thought it was Datakit, didn't you? But Sandy Fraser= had an earlier project.
<= br>
When did Alexander G Fraser's = spider cell network happen? For that matter, when did Datakit happen? I can= 't find references to either start date on line (nor anything on spider= except for references to it in Dr Fraser's bio). I can find references= to Datakit in 1978 or so.

Oopa, spoke one google search too soon. I found this:
=

"Sandy (A. G.) Fraser devised the Spider local-are= a ring (v6) and the Datakit switch (v7) that have served in the lab for overadecade. Special services on Spider included a ce= ntral network file store, nfs, and a communication package, ufs. Datakit, a =E2=80=98=E2=80=98central office= =E2=80=99=E2=80=99 for data communication, gav e added impetus to research in distributed computing. Fraser undertook the Unix Circuit Design= System (see CDL in section 4.3) to support his hardware projects"

in= "A Research UNIX Reader: Annotated Excerpts from the Programmer=E2=80=99s Manual, 1971-1986" by Doug Mcillroy.
=C2=A0
I=C2=A0 thought the answer was "ARPANET&quo= t; since we had a NCP on 4th edition Unix in late 1974 or early 1975 from t= he University of Illinois dating from that time (the code in TUHS appears t= o be based on V6=C2=A0+ a number of patches).

<= /div>
Warner


=C2=A0 =C2=A0 =C2=A0 =C2= =A0 - Dan C.


On Wed, Jan 22, 2020 at 4:32 AM Rob Pike &= lt;robpike@gmail.com= > wrote:
=
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