SMRTR TechFeb 22, 2026lobste.rs

ajail: a basic jail for programs you don't completely trust

SMRTR summary

ajail is a simple 300-line Python tool that creates secure sandboxes for running untrusted programs by wrapping them in isolated environments using bubblewrap and chroot. The tool allows users to safely execute code within temporary filesystems that can install packages ephemerally, with all changes disappearing after each session unless specifically persisted, making it ideal for testing suspicious software or running multiple AI agents concurrently.

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