In this module you will learn how to keep moving when your local terminal is not available. You will explore browser-based shells and Codespaces, see what makes them similar to and different from a local environment, and learn the practical limits to be aware of, such as session timeouts, storage caps, and quotas. By the end you will know when a cloud shell is the right tool, and how to plan around its constraints.

This module introduces the shell itself and the small set of commands you will use every day. You will learn what a shell does, how to discover information about your system, and how to read built-in help so you can keep learning on your own. By the end you will be able to navigate confidently using the most common commands and feel comfortable working in a real terminal session.

In this module you will move from talking about the shell to actually using it on real files and folders. You will change directories, list and copy files, use globbing and wildcards to act on many files at once, and copy whole directories safely. By the end you will be comfortable navigating a project, understanding paths, and using the most common file commands without hesitation.

The capstone gives you a chance to put everything together. You will work through a critical thinking assessment that asks you to apply what you learned about shells, paths, and file commands to realistic scenarios, and you will spend time in a Linux sandbox where you can practice freely without breaking anything important. By the end you will have proof, to yourself and others, that you can use the terminal to get real work done.