Linux Basics

Explore & Discover

Linux runs most of the internet. The servers behind YouTube, Netflix, Amazon, and basically every website you use are running Linux right now. It's a free, open-source operating system that anyone can download, modify, and use — which is why developers, hackers, scientists, and engineers prefer it. Start by watching "What is Linux" on YouTube by Fireship or NetworkChuck — both channels explain it in under 10 minutes. Then visit distrowatch.com to browse the huge variety of Linux versions (called "distros") people have created. Ubuntu is the most beginner-friendly. The University of Utah's computing programs and many Utah tech companies run Linux on their servers — knowing it is a real career skill. You're ready for the next step when you can explain what open-source means and name three Linux distros.

Learn the Basics

You don't need a second computer to try Linux. Download VirtualBox (virtualbox.org) for free and install Ubuntu inside it as a "virtual machine" — a computer running inside your computer. Download the free Ubuntu ISO from ubuntu.com and follow the installation wizard. Once it's running, open the Terminal — that black window with a blinking cursor that looks intimidating but is actually your superpower. Learn five essential commands: `pwd` (where am I?), `ls` (what's in this folder?), `cd` (move to a folder), `mkdir` (make a new folder), and `touch` (create a file). Practice these on freeCodeCamp's free Linux course at freecodecamp.org. You're ready for the next step when you can navigate the Linux file system using only the terminal — no mouse clicking — and create a folder with a file inside it.

Build Your First Project

Build something real: set up a simple web server on your Linux virtual machine that serves a webpage you made. Install the Apache web server by typing `sudo apt install apache2` in the terminal — that one command downloads and installs the whole thing. Then edit the default webpage file using the `nano` text editor (it's included with Ubuntu) and replace it with your own HTML. Open a browser on your regular computer and visit the IP address of your virtual machine to see your page load. You just ran a web server from a Linux box, the same way websites actually work in the real world. You're ready for the next step when you can access a webpage you personally created from a web server you installed on Linux.

Experiment & Iterate

The terminal can do things graphical interfaces can never match — automate repetitive tasks, manage hundreds of files at once, and control remote computers. Learn shell scripting: write a bash script (just a text file ending in .sh) that automatically creates a folder for each day of the week and puts a "notes.txt" file inside each one. Learn to use pipes (`|`) to chain commands together — for example, `ls | grep .txt` lists only text files. Explore `grep` for searching through files, `chmod` for changing file permissions, and `top` for watching what your computer is actually doing right now. The free Linux Command Line book by William Shotts is available completely free at linuxcommand.org. You're ready for the next step when you have a working bash script that automates at least three steps automatically when you run it.

Advanced Techniques

Real Linux power comes from two skills: SSH (connecting to remote computers) and package management. SSH lets you control a computer anywhere in the world from your terminal — the same way system administrators manage thousands of servers without ever touching them physically. Set up a free account on a cloud service like Oracle Cloud (free tier) or Render.com, then SSH into it from your virtual machine. Practice installing software with `apt`, removing it, and updating the whole system with one command (`sudo apt update && sudo apt upgrade`). Learn how to use `cron` to schedule tasks to run automatically at set times — like a script that backs up files every night at midnight. You're ready for the next step when you can SSH into a remote Linux server and run commands on it from your local terminal.

Final Project Showcase

Put it all together with a capstone project: deploy a real, publicly accessible website or service on a Linux server in the cloud. Use a free Oracle Cloud or Render instance, install your web server and any software you need, set up automatic security updates, and configure a domain name if you want one (free options exist at freenom.com). Document every command you used in a text file — this becomes your personal Linux "runbook," the same thing professional sysadmins maintain. If you want to go further, look into setting up a Raspberry Pi (a tiny $35 Linux computer) and run your server on actual hardware in your house. Share your project link with friends and write a short post on dev.to explaining what you built. You're ready for the next step when you have a live, publicly accessible service running on a Linux server that you configured entirely yourself.