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Cybersecurity,
from zero.

The only things you need are passion, and a computer.

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Intro to Linux Basic Commands Él...es?

Él...es?

The Linux filesystem may seem overwhelming because of all the different directories available. But worry not, Linux has a solution!

ls shows you everything sitting inside the directory you’re currently in.

Your first “ls”!
What’s the name of the folder in your current directory?
Flag accepted. Nice.
student@cyberacad: ~
~ $ pwd
/home/student
~ $ ls
start-here.txt  stash
~ $

Short lessons,
written by students.

2 courses, 59 lessons, all starting from zero. Every lesson covers one idea and puts you on a real Linux machine.

All courses →
Intro to Linux4 units · 34 lessons · 3-4 hours

Never opened a terminal before? Fear not! You'll learn to get around Linux with cd, ls, cat, chmod, grep and friends, on a real Ubuntu machine that runs right in your browser.

  • What is Linux? 6
  • Basic Commands 17
  • Linux^2 9
  • sudo graduate 2
CyberPatriot Linux: Tokyo Jujutsu High
8 units · 25 lessons · about 6 hours

Harden a real, deliberately insecure Ubuntu machine on your own computer. A live scoring engine grades every change you make, and each unit teaches you how to find a class of problem rather than handing you a list.

We ran boroCTF.

In June, our team organized and worked on boroCTF, an international Capture-the-Flag (cybersecurity) competition! We wrote every challenge from scratch, and we hosted and ran everything ourselves. Read the recap →

2,000+
competitors
1,000+
teams
93
countries
100+
challenges we wrote

We know students
are broke.

Well, so are we! Real courses cost thousands, and a lot of the free stuff is, excuse our language, crappy. We’re a 501(c)(3), so our donors pay for the servers instead of you.

Donate

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