Sam Stephenson

Brat is built with Brut, the Brutal Router for Unix Tools, a tiny, generic git-style command dispatcher. You can copy the main entrypoint, `bin/brat`, to another location, give it a different name, and use it to make your own command-line tools. https://codeberg.org/sstephenson/brat/src/branch/main/bin/brat
(I’ll document and release Brut separately, eventually…)

2026-02-04 17:53:02 UTC

In 2011 I created Bats, a test harness for bash, which went on to have a life of its own: https://github.com/bats-core/bats-core
Now I’m working on a 2026 take on the problem, this time targeting POSIX shell. It’s called Brat (the Brutal Runner for Automated Tests).
Here’s a video showing Brat running its own test suite, first serially, and again using 8 parallel jobs:
https://cdn.masto.host/indiewebsocial/media_attachments/files/116/013/634/085/399/603/original/b4e46e116a698697.mp4