# specular.fi

[specular.fi](https://specular.fi) is a personal engineering blog with short, code-driven write-ups about Linux internals and Unix tools the author has stumbled into. The voice is curious and self-deprecating ("After running `ls -la /usr/bin`, my mind was blown"), grounded in actual shell sessions and source-code excerpts — the kind of writing the wiki tends to keep when it shows up.

## Ingested articles

- [[specular-what-is-busybox]] — "What is BusyBox?" — multicall binary, 130+ symlinks to a single executable, `applet_name = argv[0]`, 304 compiled-in applets in Alpine