Foundations

Command Line

Navigation, files, permissions, pipes, redirects and processes, then scripting them together into a productivity system you actually run. Every lesson runs against a real sandboxed shell in the browser, so you type the commands rather than reading about them.

The course project

Command-Line Productivity System

Scripts that scaffold projects, search and organise files, analyse text, and automate the repetitive parts of your own workflow.

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course

4 modules · 8 lessons

Each module ends with a practice test, a graded build, and a step of the course project.

Part I: Navigation

01

What the Shell Actually Is

A conversation with your computer, one instruction at a time.

02

Paths and Navigation

Every file has an address. Once you can write addresses, you can go anywhere.

03

Creating and Destroying

Making things is easy. The lesson is what happens when you remove them.

04

Copying, Moving, and Renaming

Two commands, and one surprise: renaming and moving are the same operation.

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