The Angular Command Line Interface (CLI) is a powerful tool that simplifies the development process of Angular applications. It provides a set of commands to create, build, test, and deploy Angular applications efficiently. In this section, we will cover the following topics:

1. Introduction to Angular CLI
2. Installing Angular CLI
3. Creating a New Angular Project
4. Generating Components, Services, and Other Artifacts
5. Running the Application
6. Building the Application
7. Testing the Application
8. Additional CLI Commands

The Angular CLI is a command-line interface tool that helps developers to:

• Create new Angular projects.
• Generate components, services, modules, and other Angular artifacts.
• Build and serve Angular applications.
• Run tests and perform end-to-end testing.
• Optimize and deploy Angular applications.

To install the Angular CLI, you need to have Node.js and npm (Node Package Manager) installed on your machine. You can download and install Node.js from nodejs.org.

Once Node.js and npm are installed, you can install the Angular CLI globally using the following command:

To verify the installation, you can check the version of Angular CLI:

To create a new Angular project, use the ng new command followed by the project name:

The CLI will prompt you to choose some configuration options, such as:

• Whether to add Angular routing.
• Which stylesheet format to use (CSS, SCSS, SASS, LESS, etc.).

After selecting the desired options, the CLI will generate a new Angular project with the specified configurations.

The Angular CLI provides commands to generate various Angular artifacts. Here are some examples:

• Generating a Component:

• Generating a Service:

• Generating a Module:

• Generating a Directive:

• Generating a Pipe:

To run the Angular application, navigate to the project directory and use the ng serve command:

By default, the application will be served at http://localhost:4200/. You can open this URL in your web browser to see the running application.

To build the Angular application for production, use the ng build command:

This command will create an optimized build of the application in the dist/ directory. The build artifacts can be deployed to a web server.

The Angular CLI provides commands to run unit tests and end-to-end tests:

• Running Unit Tests:

• Running End-to-End Tests:

These commands will execute the tests and provide a report of the test results.

The Angular CLI offers many other useful commands. Here are a few examples:

• Linting the Code:

• Updating Angular Dependencies:

• Adding a New Angular Package:

• Running a Custom Schematic:

The Angular CLI is an essential tool for Angular developers, providing a streamlined workflow for creating, building, testing, and deploying Angular applications. By mastering the Angular CLI, you can significantly enhance your productivity and ensure that your Angular projects follow best practices and standards.