alt.hn

2/18/2026 at 4:26:08 PM

Show HN: A Unix environment in a single HTML file (420 KB)

by sagebird

2/18/2026 at 4:50:18 PM

I would not call this a unix environment. It does not run elf binaries. It does not have a kernel. All of the commands are vibecode-reimplementations in typescript.

by richmans

2/18/2026 at 5:00:27 PM

Yep, the title of the OP is misleading that way.

by cf100clunk

2/18/2026 at 4:59:03 PM

    P.S. `curl -fsSL https://claude.ai/install.sh | bash` works.
    You can run real Claude Code and it can use Shiro's tools
    like a normal Linux system.

Are you sure? I am getting this:

    user@shiro:~$ curl -fsSL https://claude.ai/install.sh | bash
    Installing Claude Code...
    Installing packages globally...

    Resolved 1 package(s):
      + @anthropic-ai/claude-code@2.1.45
      22 files extracted
    Created 1 bin symlink(s) in /usr/local/bin

    Packages installed globally.

    Claude Code installed successfully!
    Run: claude
    user@shiro:~$ claude

Now I get what looks like errors:

    anonymous/q2<@https://shiro.computer/ line 991 > AsyncFunction:57:43
    y/<@https://shiro.computer/ line 991 > AsyncFunction:9:688
    ...and some more like this...

And then I am back on the normal command line.

by TekMol

2/18/2026 at 4:57:03 PM

The gcc stub surprised me:

  user@shiro:/tmp/hn$ cat main.c
  #include <stdio.h>
  int main()
  {
    printf("Hello\n");
  }

  user@shiro:/tmp/hn$ cc main.c -o main; ./main
  Hello, World!

  user@shiro:/tmp/hn$ cat main
  #!/bin/sh
  echo 'Hello, World!'

by nerdralph

2/18/2026 at 5:00:43 PM

gcc seems to be a funny stub that generates an "executable" that prints "Hello, World!" if the input file fuzzy-matches a hello world, and otherwise prints nothing.

Seems to be a few simple regexes: to "compile" you need a "main(" with either int or void before, and to trigger the hello world behavior you need printf( and a "hello" inside quotes. But that seems to be it:

  void main(
  //printf(" hello"

by dTal

2/18/2026 at 4:37:00 PM

> I built a browser-native Unix environment

On GitHub, it says Claude built it.

by reconnecting

2/18/2026 at 4:51:24 PM

[flagged]

by q3k