How to install NPM in Linux?

Installing Node.js and npm on Linux

Introduction

Node.js is a popular JavaScript runtime environment that allows developers to build fast, scalable, and high-performance applications. npm (Node Package Manager) is the package manager for Node.js, which enables developers to easily install, update, and manage packages. In this article, we will guide you through the process of installing Node.js and npm on Linux.

Step 1: Install Node.js

To install Node.js, you can use the following methods:

  • Using the official Node.js installer: You can download the official Node.js installer from the official Node.js website. Follow the installation instructions to install Node.js on your Linux system.
  • Using a package manager: You can also use a package manager like apt-get (for Ubuntu-based systems) or yum (for Red Hat-based systems) to install Node.js. Here’s how:

    • For Ubuntu-based systems:
      sudo apt-get update
      sudo apt-get install nodejs
    • For Red Hat-based systems:
      sudo yum install nodejs

Step 2: Verify Node.js Installation

Once you have installed Node.js, you can verify its installation by running the following command:

```bash

node -v


This command will display the version of Node.js that you have installed.

**Step 3: Install npm**

To install npm, you can use the following command:

```bash
npm install

This command will install npm and its dependencies.

Step 4: Verify npm Installation

Once you have installed npm, you can verify its installation by running the following command:

```bash

npm -v


This command will display the version of npm that you have installed.

**Step 5: Install a Package**

To install a package, you can use the following command:

```bash
npm install <package_name>

Replace <package_name> with the name of the package that you want to install.

Step 6: Verify Package Installation

Once you have installed a package, you can verify its installation by running the following command:

```bash

npm ls


This command will display the installation status of the package.

**Step 7: Update npm**

To update npm, you can use the following command:

```bash
npm update

This command will update npm to the latest version.

Step 8: Remove npm

To remove npm, you can use the following command:

```bash

npm uninstall


Replace `<package_name>` with the name of the package that you want to uninstall.

**Step 9: Verify npm Removal**

Once you have removed npm, you can verify its removal by running the following command:

```bash
npm -v

This command will display an error message indicating that npm is not installed.

Troubleshooting

  • npm not installed: If npm is not installed, you can try running the following command:

    sudo apt-get install npm

    or

    sudo yum install npm

  • npm not recognized: If npm is not recognized, you can try running the following command:

    npm --version

    This command will display the version of npm that you have installed.

Conclusion

Installing Node.js and npm on Linux is a straightforward process that can be completed in a few steps. By following the steps outlined in this article, you can ensure that you have the necessary tools to build and deploy Node.js applications on your Linux system. Remember to regularly update npm to ensure that you have the latest version of the package manager.

Table: npm Installation Status

Step Command Result
1. Install Node.js sudo apt-get update sudo apt-get install nodejs
2. Verify Node.js Installation node -v node 14.17.0
3. Install npm npm install npm 5.10.0
4. Verify npm Installation npm -v npm 5.10.0
5. Install a Package npm install <package_name> npm 5.10.0
6. Verify Package Installation npm ls <package_name> npm 5.10.0
7. Update npm npm update npm 5.10.0
8. Remove npm npm uninstall <package_name> npm 5.10.0
9. Verify npm Removal npm -v npm 5.10.0

Code Snippets

  • Installing Node.js and npm using the official installer: “`bash
    sudo apt-get update
    sudo apt-get install nodejs

  • Installing Node.js and npm using a package manager: “`bash
    sudo yum install nodejs

  • Verifying Node.js Installation: “`bash
    node -v

  • Verifying npm Installation: “`bash
    npm -v

  • Installing a Package: “`bash
    npm install

  • Verifying Package Installation: “`bash
    npm ls

  • Updating npm: “`bash
    npm update

  • Removing npm: “`bash
    npm uninstall

  • Verifying npm Removal: “`bash
    npm -v

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