Welcome to the Very Basics of the Unix Command Line! When you open a terminal (sometimes called a “shell”), you enter a powerful text-based environment that gives you deep control over your operating ...

Shells are command-line interfaces (CLIs) or command interpreters in Linux and Unix-like operating systems. They provide users with a way to interact with the system by entering commands and scripts.

GUIs are great—we wouldn’t want to live without them. But if you’re a Mac or Linux user and you want to get the most out of your operating system (and your keystrokes), you owe it to yourself to get ...