Bash and the Command Line for Beginners
Learn to work in the terminal like a real developer or sysadmin. Navigate the filesystem, manage files, automate tasks, and write your own Bash scripts from scratch. No experience needed.
Cybersecurity · Ethical Hacking · Tech
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Learn by doing
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Lessons that teach a concept, then quiz you on it right away, with instant feedback, XP, and a daily streak. 3 tracks · 57 lessons.
Bash and the Command Line: Interactive Practice
Move around the shell, read permissions, chain commands with pipes and write your first scripts, one small step at a time.
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Python Programming: Interactive Practice
Variables, strings, loops, functions and files. Short lessons with quick practice after every one, no setup needed.
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IP addresses, DNS, TCP, routing and the tools you use to see what your network is really doing. Short cards, a quick check after each one, and plain explanations.
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