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What's new in 1.1.6: - NEW: Prep Lessons — pick your goal (job interview, support role, server interview, college exam) and take a short round. - Your result shows which level to study and which commands to revise, with each mistake linked to its lesson. - Misses auto-save to Revision. 20+ questions per track, fresh mix every round.
Master Linux commands from beginner to pro — fast, fun, and easy!
Learn Linux the hands-on way. Type real commands into a safe built-in terminal, follow structured lessons from beginner to advanced, test yourself with quizzes, and prepare for Linux interviews and exams, all from your phone. No virtual machine, dual-boot or root access needed. Built for absolute beginners, students, developers moving from Windows or macOS, and anyone heading into DevOps, cloud, sysadmin or cybersecurity. WHAT YOU GET - TERMINAL SIMULATOR (xenexsh): Practice 20+ Linux commands in a safe virtual filesystem. Break things, fix them, experiment freely. Nothing touches a real system. - GUIDED LESSONS: Swipe through lesson cards with a clear explanation, syntax breakdown, real-world example, when to use it, and the common mistake to avoid. Tap "Try it" to run the command in the terminal instantly. - 4 LEARNING TRACKS: Introduction, Beginner, Intermediate and Advanced. Checkpoint tests every 7 lessons make sure you actually understood before moving on. - INTERVIEW & EXAM PREP (NEW): Choose what you're preparing for: Linux job interview, server interview, support interview, college exam or Linux basics exam. Get 10-question rounds, a score and verdict, the commands you should revise, and a "Learn" shortcut straight to the lesson for every question you missed. - SMART REVISION: Every wrong answer goes into your personal mistake bank. Master a question by answering it correctly across 3 different sessions. Weak spots get practiced until they stick. - QUIZZES & DAILY PRACTICE: Multiple-choice quizzes with explanations, plus a daily bonus practice round to keep your memory sharp. - CHEAT SHEET: 60+ commands in a searchable quick reference, with tap-to-copy. - FAVORITES: Save the commands you use most and jump back to their lessons anytime. - FUN FACTS & TIPS: Short Linux facts and starting tips to keep learning fun. - DARK & LIGHT THEMES: Comfortable study day or night. WHAT YOU WILL LEARN Beginner: ls, cd, pwd, cat, mkdir, touch, rm, cp, mv, grep, find, head, tail and Linux filesystem navigation. Intermediate: file permissions (chmod, chown), processes (ps, top, kill), pipes, redirection, nano and vim, networking tools (ping, curl, wget) and services. Advanced: bash scripting, cron jobs, Git basics, Docker basics, firewall basics and server security fundamentals. PERFECT FOR - IT and computer science students - Beginners learning the Linux command line - Developers moving to Linux - Aspiring DevOps, cloud and cybersecurity learners - Anyone preparing for a Linux or sysadmin interview Lessons and quizzes are updated regularly with new content, so the app keeps growing without you needing to update it. Your progress, favorites, mistake bank and settings are saved on your device. FREE WITH OPTIONAL PREMIUM Free to use. Some activities are unlocked by watching an optional rewarded ad. A one-time Premium upgrade removes ad gates permanently and supports an independent developer. Built by Xenex Studio, an independent developer. Questions or feedback? Use the in-app Feedback screen.