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» 5 Linux Init Systems «
What’s the first thing your Linux system does when it boots up?
TLDR: It’s not checking social media. 😏
That’s where init systems come in—the process running as PID 1.
What does an init system do?
❯ Starts essential services
❯ Manages processes
❯ Handles dependencies
❯ Lets you create and manage custom services
Here’s your cheat sheet for the holidays👇🏾:
↳ 1. systemd (The modern standard and sometimes polarizing favorite) ⭐
https://systemd.io
↳ 2. launchd (macOS’s contribution, also seen in FreeBSD and beyond)
https://github.com/apple-oss-distributions/launchd/tags
↳ 3. runit (Lightweight, fast, and cross-platform friendly)
https://smarden.org/runit
↳ 4. System V (The veteran. Largely retired but paved the way)
https://github.com/slicer69/sysvinit
↳ 5. Upstart (Ubuntu’s discontinued contender ... superseded by systemd)
https://wiki.ubuntu.com/Upstart
Init systems aren’t just for sysadmins!
As as a software engineer, understanding them provides you with DevOps superpowers that allows you to productionalize services like the pro that you are...
Țechśavvy CEO
Which one do you prefer, and why? Let’s talk 👇🏾