yum How to install nodejs

In modern web development, Node.js, as a very popular back-end development language, has been widely used in development. When using Node.js, you need a stable environment to support its operation. YUM is a package manager under Linux that can provide us with convenient and fast software package installation and update services. This article will introduce how to use YUM to install Node.js under Linux system.

1. Determine the system architecture and version:

Before installing Node.js, we need to confirm the architecture and version of the current system. The system version and architecture information can be obtained through the following methods:

Command: uname -a

Run the above command, the output will be similar to the following:

Linux localhost.localdomain 3.10.0-1127.el7.x86_64 #1 SMP Tue Mar 31 23:36:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

where x86_64 is the architecture of the system, version 7. We need to download the corresponding Node.js installation package based on this information.

2. Installing Node.js:

In the Linux system, the installation file of Node.js has been provided for us in the warehouse of the YUM package manager in advance. Therefore, we can install it directly through the following command:

Command: sudo yum install -y nodejs

After running the command, YUM will automatically download and install Node.js and its related dependency packages. After completion, you can use the node command to verify whether it has been installed successfully.

Command: node -v

This command will output the version information of Node.js in the current system. If the version information is output, it means that Node.js has been installed successfully. If there is no output, you need to run the above installation command again and confirm whether the system architecture and version are correct.

3. Verify Node.js:

After successfully installing Node.js, we can try to run a simple JavaScript script for verification. First, create a file named test.js in any directory. And add the following content in it:

console.log("Hello world!");

After saving the file, open the command line, enter the directory where the file is located, and run the following command:

Command: node test. js

If everything goes well, the command line should output "Hello world!".

So far, we have successfully used YUM to install Node.js and can run JavaScript scripts normally. If you need to do more Node.js development, you can install the corresponding Node.js modules as needed. Again, this can be done through the YUM package manager.

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