CLI (Command Line Interface)
A text-based way to interact with your computer by typing commands instead of clicking buttons in a graphical interface.
What It Is
A command line interface is a text-based tool where you type commands and your computer executes them. Instead of clicking through menus and buttons, you type short instructions like “git push” or “npm install” and press Enter. The CLI is a window (often called a terminal or console) that looks like a blank screen with a blinking cursor. It may feel old-fashioned, but it is one of the most powerful tools in a builder’s toolkit. Many modern developer tools, including Claude Code, Git, and package managers, are designed to be used primarily through the command line.
Why It Matters
If you are building with AI tools, you will encounter the CLI regularly. Claude Code runs in the terminal. Git version control is managed through CLI commands. Deploying to Vercel, installing packages, and running scripts all happen at the command line. You do not need to become a terminal expert, but basic comfort with typing commands, reading output, and navigating folders will unlock tools that have no graphical equivalent. The CLI is faster for many tasks once you learn the basics.
In Practice
Opening your terminal and typing “claude” launches Claude Code. Typing “git status” shows you what files have changed. Typing “npm run dev” starts a local development server. Most operator workflows involve a handful of memorized commands rather than deep terminal expertise. AI assistants like Claude Code can also help you write and understand commands as you learn.