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
- For Ubuntu-based systems:
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