Command line Crash Course

Course

The terminal is a text interface for executing text-based programs. If you're running any tooling for web development there's a near-guaranteed chance that you'll have to pop open the command line and run some commands to use your chosen tools (you'll often see such tools referred to as CLI tools — command line interface tools).

What's the difference between a command line and a terminal?

Generally, you'll find these two terms used interchangeably. Technically, a terminal is software that starts and connects to a shell. A shell is your session and session environment (where things like the prompt and shortcuts might be customized). The command line is the literal line where you enter commands and the cursor blinks.

Cheatsheet: Link.