Terminal Basics
The command line is where every AI coding agent lives. Learn it hands-on, in a real simulator, without installing anything.
Lessons done
— / 20
Streak
—
Rank
—
— XP
About 1 h 48 min left
⌘K — search the whole course: commands and glossary terms too.
Level 0. It's just a text box
What the terminal is, and why it stops being scary
Level 1. Files, folders, paths
pwd, ls, cd, mkdir, touch
Level 2. Working with content
cat, echo, cp, mv, rm — and how not to lose things
Level 3. Search and pipes
find, grep, |, sort, uniq, wc
Level 4. Tools and version control
node, npm, and your first git commits
More in this track: Start here
Frequently asked questions
Is "Terminal Basics" free?
Yes, the whole course is free — no ads, no paywall, no hidden charges. You can support the project if you want to, but it changes nothing about your access to the lessons.
Do I need to install anything or sign up?
No. Everything runs in your browser, and your progress is saved in this browser. To move it to another device, download a backup from settings.
Who is this course for?
No experience needed. It builds up from the simplest possible starting point, so no prior experience is assumed.
How many lessons is it, and how long will it take?
20 lessons. Go at your own pace — one short lesson a day, or several in a sitting.
Is there a certificate?
Yes. Finish the course and pass the final exam, and you unlock a personalized certificate you can share.