Ranger's Terminal

Learn the Linux command line by typing real commands on a safe, pretend Ubuntu: missions, a story and a quiz.

NEW Learn Linux commands in 73 missions: 58 practice missions plus 15 in a 14-chapter story.

Ranger got his own pretend Linux computer, modeled on Ubuntu. Help him find his way around it by typing real commands: ls, cd, grep, chmod, sudo, apt and more, in 58 practice missions, including editing files with nano.

New: STORY mode. You're the new Linux sysadmin at Kibble & Co.: 14 chapters of lessons and real on-call incidents (a full disk, a broken web server, a cron job that never ran), 73 missions in all.

Nothing you type touches a real computer, but the output and error messages are modeled on Ubuntu 24.04 and checked against a real one. Get hints when stuck, learn what each command really does, explore in free play, and test yourself with a 90-question quiz. Ubuntu is a registered trademark of Canonical Ltd.; this game is not affiliated with or endorsed by Canonical.

How to play

Read the mission, type a command and press Enter.
Stuck? HINT explains the idea, and SHOW ME gives the command.
Tap the word buttons above the keyboard to type faster; Tab finishes names; ↑ brings back your last command.
FREE PLAY is your own pretend computer: type help to see every command.

Keyboard: type commands, Enter to run, Tab to complete, Up/Down for history, Ctrl+L to clear.