How to Install and Use GitHub Copilot CLI [Complete Guide]

GitHub Copilot CLI is becoming popular among users of command-line tools such as Bash, PowerShell, and Git. Nevertheless, a significant portion continues to use command-based searching or trial-and-error until something works. This usually interrupts the working process and retards daily development activities.

If you frequently forget command syntax, change tabs to find the correct Git or shell command, or encounter errors, there is a simpler approach: using GitHub Copilot CLI. After using GitHub Copilot CLI, your command-line workflow can become significantly simpler and faster.

Quick Answer:

To begin, install the GitHub Copilot CLI on your system and link it with your GitHub account. Then begin passing prompts in natural language in the terminal, and it will propose and execute the appropriate commands for you.

What is GitHub Copilot CLI

GitHub Copilot CLI is an AI-based coding assistant integrated into command-line shells (such as Bash or PowerShell), enabling you to communicate in simple, natural language rather than complex instructions.

Not only does it translate your instructions into the correct commands, but it also lets you create and debug code and even comprehend it all through the command line.

It analyzes your existing files, folders, and Git setup to provide appropriate recommendations, provide clear explanations, and help you complete your tasks more quickly and with fewer mistakes.

Also Read: Code Interpreter with GitHub Copilot in Visual Studio Code

Real Use Cases

These are some real-world use cases of GitHub Copilot CLI in daily workflows:

• Create Commands

Type simple English, and Copilot will convert it into a terminal command that you need.

• Fix Errors

In case of an error, Copilot recommends the correct command to resolve it quickly.

• Save Time

Automate repetitive tasks and avoid re-entering the same command.

• Write Scripts

Write and develop shell scripts more quickly without learning complicated syntax

• Understand Commands

Get simple explanations for difficult commands so you can learn easily.

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Prerequisites for Using GitHub Copilot CLI

These are the most important prerequisites for using GitHub Copilot CLI:

a. GitHub Account

Needed to sign in and use Copilot CLI. A free plan also works.

b. Node.js Installed

Required to run Copilot CLI. Version 22 or above is recommended.

c. Git Installed

Needed because Copilot CLI works with Git commands and repositories.

d. Terminal Access

You need a command-line environment such as Bash, PowerShell, or Zsh to run the Copilot CLI.

Also Read: A Beginner’s Guide to AI Agents, MCPs & GitHub Copilot

How to Install GitHub Copilot CLI

Step 1: Install GitHub Copilot CLI

Open your terminal and run:

npm install -g @github/copilot

Step 2: Launch Copilot CLI

Type:

copilot

This starts Copilot CLI in your terminal.

Step 3: Log in to GitHub

Go & run:

/login

It connects your account to the GitHub MCP (Model Context Protocol) server, allowing Copilot CLI to access GitHub resources.

Step 4: Start Using Copilot CLI

Type your tasks to write code, debug, fix errors, and understand code directly in the terminal.

How to Use GitHub Copilot CLI

1. Launching and Exploring

After installing and logging in, start Copilot CLI in your terminal:

1.1 Launch the CLI:

copilot

1.2 See all commands and options:

copilot help

Trust your project folder when prompted so Copilot can read files safely.

2. Writing Tasks and Using Files

You can type tasks you want Copilot CLI to do. It helps you write code, debug, fix errors, or explain your code.

2.1 Using @ to include a file:

The @ symbol tells Copilot CLI to include a specific file in your task. It reads the file contents as context.

Example prompts:

Explain @src/components/Header.js

Fix the bug in @src/components/Footer.js

Add a dark mode toggle to @src/components/ThemeSwitcher.js

As you type the file path, matching files will appear below. Use the arrow keys to select one and press Tab to complete the path.

Note: 

Make sure you are in the project folder (cd /path/to/project) before launching Copilot CLI.

3. Special Commands and Shortcuts

Copilot CLI supports commands and switches to manage sessions or run normal terminal tasks:

3.1 Login (first-time use):

/login

Connects your GitHub account to Copilot CLI and MCP server.

3.2 Show usage stats:

/usage

Displays session details: requests, duration, lines edited, and token usage.

3.3 View session context:

/context

Displays tokens currently used for your project context.

3.4 Compact Mode:

/compact

Compresses your conversation history to free up context and optimize performance.

Stop a task or action:

Press Esc

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Conclusion

GitHub Copilot CLI is a smart assistant that helps you work in your terminal in real time. It allows you to work with tasks, find context-sensitive recommendations, and organize your workflow in the most effective way, making the coding process more convenient and productive for all who use it. Its easy-to-use commands and file support give developers the power to work more quickly and with greater confidence

FAQs

Do I need prior coding experience to use Copilot CLI?

Copilot CLI works best if you know basic coding, but it can also help beginners by suggesting code, explaining files, and fixing errors.

Can Copilot CLI work on any project?

It works on most projects, but it’s more effective when used in folders with proper code structure and readable files.

Is a GitHub Copilot subscription required?

A subscription improves access, but the free plan still allows you to try Copilot CLI with limited features and tasks.