Hacker News: mrshu

New comment by mrshu in "Apertus – Open Foundation Model for Sovereign AI"

mrshu — Sun, 21 Jun 2026 23:06:12 +0000

By far the most impactful product of the Apretus project are the people. To quote a memorable line from Dominique Paul (https://www.thisiscrispin.com/):

> What most people miss IMO is that this is not a team who is doing this for the fourth time like virtually any other LLM provider and who could learn from its own past experiences. I bet if the team would do another model training they could get way better results at one fourth of the costs.

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 19:00:25 +0000

You are right, I am not sure why I did not realize Python is the whole point of the image. This is indeed much faster and easier.

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 18:55:08 +0000

An old habit that unfortunately makes one indistinguishable from LLMs these days...

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 18:52:42 +0000

It's pretty rough to learn I sound like Claude. Will need to do something about it then.

(For what it's worth I did write the message above manually but I understand why no one would believe that now. At least I did not call netcat "load-bearing" [https://mareksuppa.com/til/load-bearing/] or something...)

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 17:37:24 +0000

Yes, a very minimal image indeed. Had it been a custom image, curl would be one of the first things I would make sure it contains :)

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 17:34:22 +0000

> No, it can not. Bash lets you open TCP sockets.

Very fair pushback -- I did get carried away and will update the article to be more precise. Thanks for raising it!

> For less insane, non-bash shells there is always nc which is usually probably the wiser choice.

For completeness, `nc` or any netcat equvialent I could think of was not available in the image I was trying this with. It would certainly be a better option though.

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 17:31:37 +0000

Totally!

I was really just trying to see if intra-container connectivity works, and this ended up being a very quick way of doing so. (The alternative being building and deploying a new image, which would likely take significantly longer.)

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 17:30:23 +0000

That is indeed a solid pushback! :)

For what its worth, this container used `python:3.12.2-slim-bookworm` and I really would not expect that sort of an image to bundle `curl` -- even if it is intended for production.

New comment by mrshu in "TIL: You can make HTTP requests without curl using Bash /dev/TCP"

mrshu — Tue, 16 Jun 2026 16:40:58 +0000

I ran into this while checking connectivity between containers on an internal Docker network where the image had neither curl nor wget.

The main surprise was that Bash has /dev/tcp which lets you do the equivalent of an HTTP request with a bit of shell magic, for instance:

  exec 3<>/dev/tcp/service/8642
  printf 'GET /health HTTP/1.1\r\nHost: service\r\nConnection: close\r\n\r\n' >&3
  cat <&3

Where `service` is just the hostname of whatever you’re talking to and 8642 is the port you are trying to talk HTTP to.

Pretty cool!

TIL: You can make HTTP requests without curl using Bash /dev/TCP

mrshu — Tue, 16 Jun 2026 16:40:58 +0000

Article URL: https://mareksuppa.com/til/bash-dev-tcp-http-without-curl/

Comments URL: https://news.ycombinator.com/item?id=48558018

Points: 545

# Comments: 238

New comment by mrshu in "Learn Harness Engineering"

mrshu — Mon, 18 May 2026 22:53:49 +0000

I have also had positive experience with doing this multiple times via multiple model families, and then to recursively have the fixes reviewed too.

It's called review-anvil and does find significant amount of problems that might pop up:

https://github.com/mrshu/agent-skills/#review-anvil

New comment by mrshu in "GitHub is having issues now"

mrshu — Mon, 27 Apr 2026 18:23:42 +0000

Their uptime for just Git operations has been hit pretty hard in the past 90 days:

https://mrshu.github.io/github-statuses/

New comment by mrshu in "I've sold out"

mrshu — Wed, 08 Apr 2026 15:08:51 +0000

Well, some of the original commits are indeed quite telling!

https://github.com/amantus-ai/vibetunnel/commits/main/?after...

New comment by mrshu in "Storing Claude Code API keys in KeePassXC instead of plaintext config"

mrshu — Wed, 25 Mar 2026 14:38:01 +0000

Author here. I wrote this after setting up Claude Code with MiniMax and Z.AI and realizing their docs all tell you to paste API keys into settings.json in plaintext -- which is risky given that Claude Code has been known to read .env files and leak contents into session transcripts. I already use KeePassXC, so I wrote a shell wrapper that fetches the key at invocation time and passes it as an inline env var. Nothing is written to disk. The same pattern works with any password manager CLI -- op read for 1Password, bw get password for Bitwarden, pass show for pass. Happy to answer questions.

Storing Claude Code API keys in KeePassXC instead of plaintext config

mrshu — Wed, 25 Mar 2026 14:38:01 +0000

Article URL: https://mareksuppa.com/til/keepassxc-claude-code-api-keys/

Comments URL: https://news.ycombinator.com/item?id=47517931

Points: 2

# Comments: 3

TIL: You can attach images to GitHub PRs from the CLI (and your agents can too)

mrshu — Tue, 24 Mar 2026 22:51:11 +0000

Article URL: https://mareksuppa.com/til/github-pr-images-from-cli/

Comments URL: https://news.ycombinator.com/item?id=47510668

Points: 4

# Comments: 1

New comment by mrshu in "When does MCP make sense vs CLI?"

mrshu — Sun, 01 Mar 2026 21:27:19 +0000

It really seems the primary benefit of MCP servers was to force companies to establish some externally exposed APIs if/when they did not have them.

New comment by mrshu in "I’m joining OpenAI"

mrshu — Sun, 15 Feb 2026 22:52:02 +0000

To be fair, it's not like he did not read a single line of code that ended up being generated.

New comment by mrshu in "Another GitHub outage in the same day"

mrshu — Mon, 09 Feb 2026 22:58:34 +0000

This (multiple major outages a day) has unfortunately been happening for quite a while now -- on the 2nd of February, 2026 for instance.

The GitHub Status Page does not visualize these very well but you can see them parsed out and aggregated here:

https://mrshu.github.io/github-statuses/

New comment by mrshu in "GitHub is down again"

mrshu — Mon, 09 Feb 2026 18:30:19 +0000

Here it is. It looks like they are down to a single 9 at this point across all services:

https://mrshu.github.io/github-statuses/