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Aaron Andersen
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in an initramfs, then transition to the real root filesystem. Useful for systems requiring early boot tasks like LUKS unlock, LVM activation, or network boot before mounting the real root. Adds INIT_CMD_SWITCH_ROOT API command, `initctl switch-root` subcommand, and HOOK_SWITCH_ROOT plugin hook point. The implementation gracefully stops services, moves virtual filesystems (/dev, /proc, /sys, /run) to the new root, deletes initramfs contents to free memory, then execs the new init as PID 1. See GitHub Discussion #292 for background.
Finit is a fast, simple alternative to SysV init and systemd, designed for small and embedded Linux systems. It can also run on desktop and server systems, like finix.
Reverse engineered from the EeePC fastinit
"gaps filled with frog DNA …"
— Claudio Matsuoka
For detailed information, explore our extensive documentation
📚 http://finit-project.github.io
For working examples, see the 🚀 contrib/ section or these tutorials:
- 🛠️ Buildroot embedded Linux,
- 📦 Debian GNU/Linux,
- ⛰️ Alpine Linux, and
- 🌌 Void Linux
Note
Finit can run on various Linux distributions, but the bundled install scripts are examples only. They have been tested on amd64 (x86_64) systems with standard configurations.
For embedded systems, see these Buildroot-based examples: myLinux, Infix, or br2-finit-demo.