Open source
Its code can be viewed, studied, improved, and shared by communities around the world.
Made by a student, for students
Linux feels easier when you learn it by doing.
A clear, no-pressure introduction to the terminal, files, permissions, and safer computing. No experience required.
Created by Joshua Akilov, a high school cybersecurity student.
12core commands
4short lessons
1practice quiz
student@linux:~$ whoami
student
student@linux:~$ pwd
/home/student
student@linux:~$ ls
Documents Projects practice.txt
student@linux:~$ _
Three commands. Three useful answers.
Lesson 01
What is Linux?
Linux is an operating system, like Windows or macOS. It powers laptops, servers, supercomputers, phones, and many cybersecurity tools.
Many versions
Linux comes in distributions, or “distros,” such as Ubuntu, Fedora, Debian, and Linux Mint.
You are in control
The terminal lets you navigate, create files, manage permissions, and automate tasks with commands.
Lesson 02
Command explorer
Select a command to see what it does and a safe example you can try.
pwdnavigationPrint your current location
Shows the full path of the folder you are currently working in.
Try it
$ pwd/home/student
Remember: “pwd” stands for print working directory.
Lesson 04
Use the terminal responsibly
The terminal is powerful. A careful user checks commands, protects accounts, and understands consequences before pressing Enter.
Read before running
Do not paste commands from a random post without understanding what each part does.
Use sudo carefully
sudo gives a command administrator power. Use it only when needed and from a trusted source.
Keep secrets private
Never share passwords, recovery codes, private keys, or personal information in screenshots.
Expect mistakes
Save important files before practicing commands that move, overwrite, or delete data.
Knowledge check
Ready for a quick quiz?
Five questions. Instant explanations. You can retry as many times as you want.
Question 1 of 5Score: 0
Keep learning
Your 7-day Linux starter challenge
Spend 15 minutes a day. Practice in a school lab, virtual machine, or safe Linux environment approved by your teacher.
- Day 1
Learn where you are with
pwd,ls, andcd. - Day 2
Create a practice folder and files with
mkdirandtouch. - Day 3
Read text files using
catand learn how to useman. - Day 4
Copy and rename practice files with
cpandmv. - Day 5
Study users, groups, and the meaning of
rwx. - Day 6
Review terminal safety and explain why
sudorequires care. - Day 7
Take the quiz, retry missed questions, and teach one command to someone else.
One command at a time
You do not need to memorize everything. You need to stay curious.
Practice the commands againHelp improve this project
Found an error or have an idea?
Student and educator feedback helps make every lesson clearer and more useful.