Detailed explanation of how to install Node.js and npm on CentOS

CentOS is a very popular Linux operating system, especially widely used in the field of web servers. In order to run Node.js applications on CentOS, you need to install Node.js and npm, two popular JavaScript development tools. In this article, we will explain how to install Node.js and npm on CentOS.

1. Update your system

Before doing any installation, you need to make sure your system is up to date. The system can be updated by running the following command:

sudo yum update

This will update all packages on the system. Note that this may take several minutes depending on your system and current number of packages.

2. Installing Node.js

Node.js can be installed through the EPEL repository. To enable the EPEL repository, type the following command:

sudo yum install epel-release

You can then install Node.js using the following command:

sudo yum install nodejs

This will download and install the latest version of Node.js. Once the installation is complete, you can check the version number using the following command:

node -v

3. Install npm

npm is a package manager for Node.js that allows you to install it easily and manage Node.js packages. To install npm, run the following command:

sudo yum install npm

This will automatically install the latest version of npm and set up the required dependencies.

4. Verify npm installation

After the installation is complete, you can use the following command to verify whether npm was installed successfully:

npm -v

If everything is OK, it will be output npm version number.

5. Update npm

If you need to update npm to the latest version, please run the following command:

sudo npm install -g npm

This will download and update npm to the latest version .

6. Install commonly used Node.js packages

Now, Node.js and npm have been successfully installed on CentOS. You can use npm to easily install various commonly used Node .js package. For example, the following is the command to install the Express framework:

sudo npm install -g express

This will install the latest version of the Express framework. You can install other Node.js packages using similar commands.

Summary

Installing Node.js and npm on CentOS is very simple. It only takes a few commands to install them on your system. If you need to develop web applications using JavaScript, these two tools are indispensable.

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