command not found ng

Guri Bee

2 min read

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17-10-2024

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"Command Not Found: ng" - Troubleshooting Angular Development Errors

Getting the dreaded "command not found: ng" error is a common frustration for Angular developers. This error usually signifies an issue with your Angular CLI (Command Line Interface) installation or environment setup. Let's dive into the most likely culprits and solutions to get you back on track.

1. The Angular CLI is Not Installed:

Question: "I just downloaded Angular and I'm trying to create a project, but I'm getting "Command not found: ng". What's wrong?"

Answer: [From Github - https://github.com/angular/angular-cli/issues/18548](https://github.com/angular/angular-cli/issues/18548) "The most likely cause is that you haven't installed the Angular CLI globally. You can install it using npm or yarn."

Solution:

• Install Angular CLI globally using npm:

  npm install -g @angular/cli
  

• Or use yarn:

  yarn global add @angular/cli
  

2. Incorrect Environment Configuration:

Question: "I installed Angular CLI, but it's still not working! I see it in my package.json file, but 'ng' isn't recognized."

Answer: [From Github - https://github.com/angular/angular-cli/issues/14429](https://github.com/angular/angular-cli/issues/14429) "The issue might be related to your system environment variables not being properly configured. This is especially common if you've recently upgraded your Node.js version."

Solution:

• Update your PATH environment variable:
  • Windows: Add the installation directory of your node_modules folder to the PATH environment variable.
  • macOS/Linux: Typically, the installation is in /usr/local/bin/. Ensure this is included in your PATH variable.
• Verify installation:
  • Check your npm/yarn global installation:

    npm list -g --depth 0
    # or
    yarn global list
    

  • Verify if the ng command is found:

    which ng
    

3. Conflicting Installations or Versions:

Question: "I'm having trouble with 'ng' after upgrading Node.js. Could that be the cause?"

Answer: [From Github - https://github.com/angular/angular-cli/issues/16874](https://github.com/angular/angular-cli/issues/16874) "Sometimes, upgrading Node.js can lead to conflicts with existing Angular CLI installations. A clean re-installation might be necessary."

Solution:

• Uninstall Angular CLI:

  npm uninstall -g @angular/cli
  # or
  yarn global remove @angular/cli
  

• Reinstall Angular CLI:

  npm install -g @angular/cli
  # or
  yarn global add @angular/cli
  

4. Local vs. Global Installations:

Question: "I'm working on a project and installed Angular CLI locally. Why isn't 'ng' working?"

Answer: [From Github - https://github.com/angular/angular-cli/issues/15421](https://github.com/angular/angular-cli/issues/15421) "If you installed Angular CLI locally within your project, you need to run the ng command from within the project directory."

Solution:

• Navigate to your project's directory:

  cd my-angular-project
  

• Run ng commands within the project:

  ng serve
  

Additional Tips:

• Check for updates: Ensure you're using the latest version of Angular CLI by running ng update @angular/cli.
• Use a package manager: If you're encountering issues related to different versions, consider using a package manager like nvm (Node Version Manager) to manage your Node.js versions.
• Restart your terminal: Sometimes a simple restart can resolve environment issues.

Remember: If you're still experiencing problems, provide more context and error messages in your Github search for more targeted assistance. Happy coding!