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acristoffers / EX200-cheat-sheet.md
Last active February 16, 2026 10:04
Things to know for the EX200 (RHCSA) exam

This file contains some commands and configurations you need to know for the EX200 (RHCSA) exam.

It is not exhaustive. Knowledge I consider basic is not here. This is meant to cover the things I don't do frequently enough, so there is a risk I may have forgotten how to do, or things the exam usually asks for and that you better know how to do it by heart.

Table of Contents

GNOME extension with TypeScript (for autocomplete)

One of the downsides of developing GNOME extensions is not having autocomplete in your editor, which makes life really hard when you don't know where to look for documentation and don't know much about GLib and Gnome Shell. To solve that, we can create our project using TypeScript and the types defined in the ts-for-gir project.

But before that, let's talk about expectations. I'm not going to show how to configure any specific editor. This setup is editor-agnostic and if you have a