Learn Linux by doing.

30 progressive missions. You write real commands. The system validates every step. Nothing to install, no risk of breaking your machine.

Start first mission → Free · No signup · 30 missions ready
~ linuxuniversity 
# Mission 3: Read the first 10 lines of /etc/passwd
$ head -n 10 /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
...✓ Correct! +15 XP
→ Next: Mission 4 — Find lines containing "error"

How it works

01

Read the mission

Each mission is a real problem: "find the file", "read the first N lines", "search for this pattern".

02

Write the command

In the terminal-style editor. Nothing to install, no special permissions, no risk.

03

Auto-validation

The system verifies you used the right command with the expected flags. If you fail, contextual hint.

04

Advance and earn XP

30 missions in 3 levels: Beginner → Intermediate → Advanced. Points and progress system.

Available missions

Beginner 10 missions

pwd, ls, cat, find, grep, head, tail, chmod, mv, wc

Free

Intermediate 10 missions

Processes, permissions, systemd, logs, users.

Coming soon

Advanced 10 missions

Networking, SSH, rsync, tar, awk, services.

Coming soon

Pricing

Free
$0
  • ✓ 10 Beginner missions
  • ✓ In-browser command editor
  • ✓ Auto-validation
  • ✓ No signup
Start free
Pro
$9/mo
  • ✓ Everything in Free +
  • ✓ 30 missions (3 levels)
  • ✓ LFCS Cert Prep pack
  • ✓ Progress tracking
  • ✓ New missions every month
Coming soon