Real Linux, Git & Docker labs in your browser

ShellGenius gives you real, isolated containers in the browser - not simulated shells - with 105 hands-on challenges and guided lessons from absolute beginner to production-grade. No setup, no downloads.

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• Guided courses - step-by-step Linux, Git & Docker lessons with quizzes and a live terminal
• Linux labs - 50 challenges from file permissions to kernel tuning
• Git labs - 25 challenges from your first commit to rewriting history
• Docker labs - 30 real container incidents to debug and fix
• Linux warmup - 85+ essential commands for complete beginners