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Learning about "The Unix Time-Sharing System"

https://playtechnique.io/long/the-unix-time-sharing-system.html
9•gwynforthewyn•1h ago

Comments

gwynforthewyn•1h ago
I'm the writer of this essay.

My subject is some details surrounding the first white paper that Bell Labs published about Unix was "The Unix Time-Sharing System". I wrote what Ken Thompson was doing in between the end of Multics but before he found the "little used PDP-7" that he wrote Unix on, the difference between opening files on Multics and Unix, and what the "comfile" mentioned in the paper is.

I wrote this without AI involvement; I follow Unix history because I love knowing what the history is and what I can learn from it, and I love showing others these sorts of cool details.

I'd love to hear any feedback you might have :)

bch•20m ago
> So what's a comfile? Clearly it's a shell script, yeah? So why're they called comfiles? It's short for "command files".

The vestige I'm amused by on my (BSD) systems is <foo>.S files. "S" for "Source". From the time when "source code" meant "assembly". Python, zig, C++, C, etc would be invented later...

ElevenLabs, TwelveLabs, ThirteenLabs

https://quantumi.sh/public/labs.html
103•jemoka•2h ago•41 comments

A Kantian Critique of "Sorry" by Justin Bieber

https://decodingvibes.com/blog/a-kantian-critique-of-sorry-by-justin-bieber/
163•altmanaltman•4h ago•74 comments

A Friendly Introduction to Racket

https://geometridae.bearblog.dev/a-friendly-introduction-to-racket/
58•signa11•3h ago•13 comments

New MCP Roadmap

https://blog.modelcontextprotocol.io/posts/mcp-roadmap/
120•pentagrama•4h ago•93 comments

Munder Difflin – Agent harness to run an office of your clones

https://munderdiffl.in/
190•simonpure•8h ago•78 comments

Z80 – The 1970s Microprocessor Still Alive (2021)

https://www.computer.org/csdl/magazine/mi/2021/06/09623402/1yJTvlRLmhi
87•asdefghyk•8h ago•41 comments

Anthropic appears to be A/B testing reduced effort levels in Claude Code

https://twitter.com/argofowl/status/2091150597374537729
27•matthieu_bl•54m ago•12 comments

Learning about "The Unix Time-Sharing System"

https://playtechnique.io/long/the-unix-time-sharing-system.html
9•gwynforthewyn•1h ago•2 comments

Belgian car salesman becomes prince after DNA test proves royal parentage

https://www.cnn.com/2026/08/22/europe/prince-belgium-secret-son-scli-intl
22•MilnerRoute•43m ago•10 comments

Show HN: Rotation via Double Reflection

https://static.laszlokorte.de/rotor-reflect/
33•laszlokorte•1d ago•7 comments

Statement by Prime Minister Carney on Canada-U.S. trade negotiations

https://www.pm.gc.ca/en/news/statements/2026/08/21/statement-prime-minister-carney-canada-us-trad...
658•backlit4034•7h ago•1 comments

Rust Glancer: Rust LSP using 100x less RAM

https://rust-glancer.github.io/blog/hello-world/
366•matklad•22h ago•76 comments

Felony Bench

https://www.felonybench.com/
803•colinprince•1d ago•320 comments

Kobo can run apps now

https://bandarlabs.github.io/Cobalt/
627•thepoet•1d ago•200 comments

Felony charges for citizen deleting phone data at US Border

https://www.nytimes.com/2026/08/21/us/politics/samuel-tunick-deleted-phone-felony.html
992•floathub•1d ago•1214 comments

Stop Making TUIs

https://sockpuppet.org/blog/2026/08/20/stop-making-tuis/
339•underdeserver•1d ago•434 comments

I accidentally logged hundreds of thousands of phone calls to military bases

https://lina.sh/blog/hijacking-e164-arpa
634•gavide•1d ago•81 comments

Kagi added a setting for removing paywalled links from search results

https://kagi.com/changelog#11296
1212•speckx•1d ago•378 comments

Hook, hold, harvest and hide: Meta's alleged strategy laid out in first week

https://www.theguardian.com/technology/2026/aug/22/meta-trial-children-privacy
168•sbulaev•5h ago•132 comments

There's no reason for software to be slow anymore

https://danluu.com/perf-opt/
587•Jach•16h ago•428 comments

Zig’s Io.Threaded is neat

https://matklad.github.io/2026/08/06/neat-io-threaded.html
134•chilipepperhott•1d ago•76 comments

Scientists release biggest 2D map of the universe

https://newscenter.lbl.gov/2026/08/10/scientists-release-biggest-2d-map-of-the-universe/
243•NKosmatos•23h ago•65 comments

OTel isn’t going well

https://matduggan.com/otel-isnt-going-well-and-i-made-a-spreadsheet-about-it/
195•hn_acker•1d ago•97 comments

Embedded AI

https://nostarch.com/embedded-ai
28•0x54MUR41•8h ago•9 comments

AI boosted homework scores, then exam scores dropped: study

https://www.economist.com/graphic-detail/2026/08/18/does-ai-stop-children-from-learning
362•dash2•3d ago•360 comments

How Thailand Resisted Colonization

https://worksinprogress.co/issue/how-thailand-resisted-colonization/
102•karakoram•23h ago•36 comments

Claudette: Make Claude stop talking like a BuzzFeed article

https://github.com/adnanakil/nobuzz/blob/main/README.md
335•aakil•1d ago•219 comments

Early-life stress leaves a 'scar' inside brain cells in mice

https://medicine.washu.edu/news/how-early-life-stress-leaves-a-scar-inside-brain-cells/
133•gmays•1d ago•63 comments

I'm becoming AI-blind

https://cymerys.com/w/im-becoming-ai-blind
461•rcymerys•1d ago•468 comments

Everyone says assembly is untyped—everyone is wrong

https://www.gingerbill.org/article/2026/08/20/designing-odins-inline-asm/
136•adamrezich•2d ago•63 comments