Learn Linux Commands Offline

Learn the Linux command line by typing real commands into a safe, simulated terminal. Nothing can break, nothing needs root, and it all works offline.

A SAFE TERMINAL IN YOUR POCKET
• Simulated bash shell with its own files and folders
• Navigate, create, copy, move and delete files, then reset with one tap
• Pipes and redirection (|, >, >>), grep, cut, sort, find, tar, chmod and much more
• A symbol toolbar above the keyboard for | > ~ / - * . && and other characters that are hard to type on a phone

40 LESSONS FROM ZERO
Short, practical lessons in 8 units, from your first ls to permissions, processes, archives and text processing. Each lesson ends with commands you try yourself.

120 HANDS-ON CHALLENGES
Story-based tasks across 12 levels: clean up a log folder, fix permissions, find a config file, extract an archive. The app checks the real result in the terminal, not just the command you typed.

EXPLAIN THIS COMMAND
Type any command, such as find /var/log -name "*.log" -mtime -7, and see every part explained: the program, each flag and each argument.

COMMAND REFERENCE AND CHEAT SHEETS
• 314 commands with syntax, common flags and practical examples
• 25 cheat sheets: navigation, permissions, grep and regex, pipes, find, archives, users and sudo, package managers, SSH, systemctl, networking, vim, nano, disk space and more
• Bookmark the commands you use most

BUILD A DAILY HABIT
• Choose a daily goal of lessons or challenges
• Streaks with streak freezes
• Optional reminder at the time you choose

Great for students, beginners moving to Linux, Raspberry Pi owners, and anyone preparing for IT, sysadmin, cloud or DevOps work.

Free with ads. A one-time Pro purchase removes ads. No subscription and no account.

Recent changes:
Fixes: purchase screen no longer gets stuck after cancelling, stability and launch fixes.