Terminal

What is the Terminal?

The terminal is a program that lets you control your computer by typing text commands instead of clicking icons and menus. When you open a terminal, you see a blinking cursor waiting for input — that's where you type.

Think of it as a direct line of communication with your operating system. Rather than navigating through folders by double-clicking, you type cd Documents and you're there instantly.

Why Developers Use It

Most developer tools — Git, Node.js, Python, npm — are designed to be run from the terminal. They don't come with a graphical interface. Once you get comfortable with the terminal, many tasks become faster than their GUI equivalents.

The terminal is also the only way to access remote servers, deploy apps, and automate repetitive tasks with scripts.

What It's Called on Different Systems

The terminal has different names depending on your operating system:

• macOS — Terminal (built-in) or iTerm2 (popular alternative)
• Windows — Command Prompt, PowerShell, or Git Bash (recommended for developers)
• Linux — Terminal, Bash, or various others depending on the distribution

All of these are "terminals" at heart — they just use slightly different commands or shells underneath.

The Shell Inside the Terminal

The terminal is the window; the shell is the program running inside it that interprets your commands. The most common shell is Bash. On macOS, Zsh is the default. Understanding this distinction helps when you see instructions that say "open a Bash shell."