Linux Fundamentals
The operating system almost all of the internet runs on, taught from the first command. Free, and the ground every later course stands on.
Not yet reviewed
Before you start
- Introduction to ExploitQuestabout 1h
This course expects those first. Nothing is locked — sign in and it will say where you stand.
The text prompt that looks intimidating and turns out to be the most honest interface a computer has.
The idea that makes the command line more than a list of commands — small tools that each do one thing, joined into something none of them could do alone.
Who is allowed to read, change, or run each file — the model that keeps a multi-user system from being a free-for-all, and the power that comes with root.
Everything the computer is doing right now is a process. Seeing them, and starting and stopping them deliberately, is the last piece of a working footing.
Labs
Hands-on challenges for this course. Each one hides a flag you have to find.
Exam
Timed, and it issues a credential anyone can verify. Practice quizzes are untimed; this one is not.