How to check CentOS version?

How to Check CentOS Version?

Introduction

CentOS, a popular Linux distribution, is a stable and reliable operating system Used by many organizations and individuals. To ensure the best functionality and compatibility of your system, it is essential to know the version of CentOS you are running. In this article, we will explore how to check the version of CentOS on your system.

Direct Answer: How to Check CentOS Version?

To check the version of CentOS, you can follow these simple steps:

1. Open a terminal: You can access the terminal by searching for it in the applications menu or by pressing Ctrl + Alt + T (or Cmd + Opt + T on Mac).
2. Type the command: Type the command centos --version and press Enter.

Alternative Methods

If you prefer a GUI-based approach, you can check the version of CentOS using the following methods:

Method 1: Using the cat Command

• Open a terminal.
• Type the command cat /etc/centos-release and press Enter.
• The version number will be displayed on the next line.

Method 2: Using the rpm Command

• Open a terminal.
• Type the command rpm -qi centos-release and press Enter.
• The version number will be displayed in the output.

Method 3: Using the uname Command

• Open a terminal.
• Type the command uname -a and press Enter.
• The version number will be displayed in the output.

What Does the Version Number Mean?

The CentOS version number is a combination of two parts: the major version and the release number. The major version is the first number, and the release number is the second number. For example, CentOS 7.9 is a major version 7 and release number 9.

What’s the Difference Between Major and Release Versions?

• Major version: The major version refers to the fundamental release of CentOS. For example, CentOS 7 is a different major version from CentOS 8.
• Release versions: The release version refers to smaller updates and bug fixes. For example, CentOS 7.9 is a minor update from CentOS 7.8.

Why is it Important to Know the Version?

Knowing the version of CentOS is essential for several reasons:

• Compatibility issues: Different versions of CentOS may have different compatibility issues with certain software and hardware.
• Security updates: New security patches and updates are often released for specific versions of CentOS.
• Software compatibility: Some software may be designed to work with a specific version of CentOS.

Conclusion

In conclusion, checking the version of CentOS is a simple process that can be done using various methods. Understanding the version number and its significance can help you troubleshoot issues, ensure compatibility, and stay up-to-date with security updates.

FAQs

• What is the difference between CentOS 8 and CentOS 9?

  • CentOS 8 is a different major version from CentOS 9, with fundamental changes and new features.

• How do I check the version of CentOS in GUI?

  • Use the cat /etc/centos-release command or use a GUI-based tool like System Information or Software Updates.

• Why is it important to know the version of CentOS?

  • To ensure compatibility, security, and troubleshoot issues.