Welcome to Learn Linux

Welcome to "Learn Linux"! Admittedly, the course name is a bit of a misnomer. It's called "Learn Linux" because "Linux" is what most students think of regarding the concepts in this course. A more accurate title might be "Learn to use shells and terminals in a Unix-like environment," but that's a mouthful.

Learning Goals

Understand the difference between a shell and a terminal
Learn how to navigate and use the file system using the command line
Learn how to install software using the command line
Understand how to manage your PATH and environment variables
Learn how to manage permissions and execute programs

This course will get you comfortable working on a command line, which is a skill that's going to be critical for the rest of your career as a programmer. So, instead of writing code in the browser, in this course you'll interact with a command line interface (CLI) directly on your machine.

Assignment

Find and open a terminal on your computer (see below for instructions).
Type the following command and press enter:
```
echo "Hello world"
```
When you're done, answer the question.

How to Open a Terminal on Mac

Open the "Terminal" application. You can find it by searching for "Terminal" in Spotlight (the magnifying glass in the top-right corner of your screen).

How to Open a Terminal on Windows

Open the "Command Prompt" application. You can find it by searching for "Command Prompt" in the Start Menu.

How to Open a Terminal on Chromebook (ChromeOS)

Enable the Linux development environment by going to Settings -> Advanced -> Developers -> Linux development environment. Once installed, open the "Terminal" application from your app launcher.

How to Open a Terminal on Linux

If you're on Linux, I refuse to believe that you don't already know how.