TUHS January 2021

tuhs@tuhs.org

76 participants
56 discussions

Re: [TUHS] Three-quarters to the next Epoch

by John Foust

At 03:46 PM 1/23/2021, Dave Horsfall wrote: >Sent to me from a fellow weirdo... > >At 19:25:36 AEDT (00:25:36 UTC), Unix time reached 0x60000000. We're three quarters of the way to 2038... That was January 14, 2021, right? https://www.epochconverter.com/hex - John

3 years, 8 months

System V Release 2, adding swap?

by Arnold Robbins

Hi. Does anyone know how to add swap space on a System V Release 2 system? In particular, on an emulated AT&T 3B1. The kernel is S5R1 or S5R2 vintage. I don't see any commands with 'swap' in their names. Thanks, Arnold

3 years, 8 months

Favorite unix design principles?

by Tyler Adams

I'm writing about my 5 favorite unix design principles on my blog this week, and it got me wondering what others' favorite unix design principles are? For reference, mine are: - Rule of Separation (from TAOUP <http://catb.org/~esr/writings/taoup/html/> ) - Let the Machine Do the Dirty Work (from Elements of Programming Style) - Rule of Silence (from TAOUP <http://catb.org/~esr/writings/taoup/html/>) - Data Dominates (Rob Pike #5) - The SPOT (Single Point of Truth) Rule (from TAOUP <http://catb.org/~esr/writings/taoup/html/>) Tyler

3 years, 8 months

Re: [TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems

by jnc＠mercury.lcs.mit.edu

> From: Paul Riley > Is LSX the only option on the 11/03, or could I run V6 or Mini-Unix with > more RAM? All PDP-11 Unix versions from V4 on require the MMU, so the -11/03 is out for them. We don't have the code for V2-V4, though. So V1 (mostly all assembler, no C :-), LSW and Mini-Unix are the only options for it. V6 can be run on an -11/23 (I've done it), but not straight out of the box; it requires a few minor tweaks first: http://gunkies.org/wiki/Running_UNIX_V6_on_an_-11/23 Noel

3 years, 8 months

Re: [TUHS] Apollo/token-ring networks

by Ed Carp

On 1/24/21, Jon Steinhart <jon(a)fourwinds.com> wrote: > So I never liked Apollos much. What I was referring to was Apollo's claim > that their token-ring network performed better for large numbers of nodes. > And they were correct. However, they didn't consider the eventually > invention of switches that solved the problem. A problem that shouldn't have ever been there in the first place. When I was at EDS, we did a lot of benchmarks against token-ring vs. CSMA-CD. Token-ring was slower than CSMA-CD until the traffic got to be more than about 10% of capacity - then the collision detection exponential backoff algorithm would clobber the network. The argument that "well, we will never get above that anyway, so we want the fastest we can get" sort of short-sightedness won the day. It wasn't until switches and virtual LANs came into existence that (as you said) solved the problem.

3 years, 8 months

Three-quarters to the next Epoch

by Dave Horsfall

Sent to me from a fellow weirdo... At 19:25:36 AEDT (00:25:36 UTC), Unix time reached 0x60000000. We're three quarters of the way to 2038... Stock up on food, load dem guns, and batten down the hatches :-) -- Dave

3 years, 8 months

bas(1) and bs(1) videos including features and use

by Dave Plonka

Hi folks, In case you're interested: I've published a couple videos on these ancient Unix tools, sharing including some language details and showing them in action on v7 and System III, respectively: Ken Thompson's bas(1): https://youtu.be/LZUMNZTUJos Dick Haight's bs(1): https://youtu.be/ELICIa3L22o Thanks much for the help from TUHS, Mashey, Kernighan, McIlroy, and others cited therein. Peace, Dave -- dave(a)plonka.us http://www.cs.wisc.edu/~plonka/

3 years, 8 months

ACM Fellow, Ken Thompson

by Royce Williams

Congratulations to Ken Thompson, the newly-minted ACM Fellow: https://awards.acm.org/award_winners/thompson_4588371 (It seemed of historical interest, and therefore on-topic. :) ) -- Royce

3 years, 8 months

Happy Birthday to Marshall Kirk McKusick

by Caipenghui

Thank you for your work to make the world a better, happy birthday to you. God bless us. #define FS_UFS2_MAGIC 0x19540119 Caipenghui

3 years, 8 months

Re: [TUHS] Bearded Fellow, Ken Thompson

by Norman Wilson

Dave Horsfall: At one place I worked, every Unix bod sported facial fungus; it must be a Unix thing... ==== Not really. I've seen bare faces and beards and operating systems over the decades that would scare the bugs out of any of the above beards and operating systems. There really isn't a lot of consistency. I've known plenty of bare-faced UNIX hacks, and plenty of RSX and VMS and Windows and IBM programmers who hide their embarrassment behind beards. The ultimate reference is, of course, the inhabitants of the UNIX Room. During my time there in mid-to-late 1980s, some people wore beards, some didn't. I have never seen Ken or Dennis or Brian clean-shaven, but I have never seen Doug or Rob or Tom Duff or Lorinda with a beard. And despite a certain remark attributed to the late Vic Vyssotsky (who I've never seen with a beard either), I am quite sure that my appearance had nothing to do with my being recruited by the group. Norman `too lazy to shave' Wilson Toronto ON

3 years, 8 months

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TUHS January 2021