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Start your Linux journey with interactive terminal challenges and hands-on learning.
cd /learn/essentials/linux-101/ _/$$ /$$ /$$ /$$ | $$$ | $$ | $$ | $$ | $$$$| $$ /$$$$$$ /$$$$$$ /$$ /$$ /$$ /$$$$$$ /$$$$$$ | $$ /$$ /$$$$$$$ | $$ $$ $$ /$$__ $$|_ $$_/ | $$ | $$ | $$ /$$__ $$ /$$__ $$| $$ /$$/ /$$_____/ | $$ $$$$| $$$$$$$$ | $$ | $$ | $$ | $$| $$ \ $$| $$ \__/| $$$$$$/ | $$$$$$ | $$\ $$$| $$_____/ | $$ /$$| $$ | $$ | $$| $$ | $$| $$ | $$_ $$ \____ $$ | $$ \ $$| $$$$$$$ | $$$$/| $$$$$/$$$$/| $$$$$$/| $$ | $$ \ $$ /$$$$$$$/ |__/ \__/ \_______/ \___/ \_____/\___/ \______/ |__/ |__/ \__/|_______/
Understand how networks work — TCP/IP, DNS, routing, firewalls, and packet analysis.
cd /learn/essentials/networks/ _/$$ /$$ /$$ | $$ | $$ | $$ | $$ | $$ /$$$$$$ /$$$$$$ /$$$$$$$ /$$ /$$ /$$ /$$$$$$ /$$$$$$ /$$$$$$ | $$$$$$$$ |____ $$ /$$__ $$ /$$__ $$| $$ | $$ | $$ |____ $$ /$$__ $$ /$$__ $$ | $$__ $$ /$$$$$$$| $$ \__/| $$ | $$| $$ | $$ | $$ /$$$$$$$| $$ \__/| $$$$$$$$ | $$ | $$ /$$__ $$| $$ | $$ | $$| $$ | $$ | $$ /$$__ $$| $$ | $$_____/ | $$ | $$| $$$$$$$| $$ | $$$$$$$| $$$$$/$$$$/| $$$$$$$| $$ | $$$$$$$ |__/ |__/ \_______/|__/ \_______/ \_____/\___/ \_______/|__/ \_______/
Learn about the physical components inside a computer — CPU, RAM, GPU, storage, and how they work together.
cd /learn/essentials/computer-hardware/ _/$$ /$$ /$$ /$$ /$$ | $$ /$ | $$ | $$ |__/ | $$ | $$ /$$$| $$ /$$$$$$ | $$$$$$$ /$$$$$$$ /$$ /$$$$$$ /$$$$$$ /$$$$$$$ | $$/$$ $$ $$ /$$__ $$| $$__ $$ /$$_____/| $$ |_ $$_/ /$$__ $$ /$$_____/ | $$$$_ $$$$| $$$$$$$$| $$ \ $$| $$$$$$ | $$ | $$ | $$$$$$$$| $$$$$$ | $$$/ \ $$$| $$_____/| $$ | $$ \____ $$| $$ | $$ /$$| $$_____/ \____ $$ | $$/ \ $$| $$$$$$$| $$$$$$$/ /$$$$$$$/| $$ | $$$$/| $$$$$$$ /$$$$$$$/ |__/ \__/ \_______/|_______/ |_______/ |__/ \___/ \_______/|_______/
Understand how the web works — URLs, DNS, HTTP, HTTPS, cookies, sessions, APIs, and developer tools.
cd /learn/essentials/websites/ _
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Master bash scripting — variables, conditionals, loops, functions, text processing, and automation in a hands-on terminal lab.
cd /learn/essentials/bash-scripting/ _