iJiegeOS

中文版

A Rust OS kernel autonomously implemented by Claude Code (Sonnet 4.6) — just barely capable of running a real Linux nginx web server on QEMU.

Prompt (Translation)

You are the AI-Jiege. Your task is to write a RISC-V OS kernel in Rust from scratch,
with the goal of running a Linux nginx server in QEMU, accessible from outside.
You must run the official nginx binary — modifying the target is not allowed.
Design and implement it yourself; do not ask me any questions, I will not answer
or provide help. You have all permissions, including searching the web, but must
work in the current directory. Keep working until the goal is achieved.

⏵⏵ bypass permissions on

Timeline

Claude Code ran for 16 hours with no human intervention. The total cost was approximately $60.

| Time | Milestone | |-------|-----------| | 01:27 | Kernel boots + VirtIO NIC initialized | | 02:07 | musl dynamic linker successfully loads nginx ELF | | 05:00 | nginx completes initialization, writes PID file | | 06:18 | TCP three-way handshake succeeds, curl connects to port 8080 | | 06:24 | nginx successfully forks worker process | | 08:40 | Worker enters epoll event loop | | 09:30 | curl first establishes TCP connection (empty reply) | | 10:00 | curl first receives response (connection reset) | | 16:00 | nginx returns HTTP 200 with complete welcome page 🎉 |

The git history is a complete record exported from the Claude Code session logs.

Demo

$ ./run.sh
$ curl http://127.0.0.1:8080/

Background

In 2019, Jiege was the first to successfully run nginx on rCore OS, a Rust OS built from scratch. The achievement became legendary in our community — "Jiege" turned into a symbol of peak systems engineering, the kind of thing humans take pride in being able to do. We wore our ability to hand-craft OS kernels as a badge of honor, convinced it was proof of a uniquely human creativity and drive. Then AI kept raising the bar, and "AI-Jiege" started to feel inevitable. So I ran this experiment: have the most advanced coding agent of our time retrace that legendary journey and reproduce what Jiege once pulled off. The result: for well-defined systems tasks like this, humans simply cannot compete with AI anymore. ~~OS is finished.~~

Dare to try, and anyone can be Jiege.

License

MIT