how to check os version in linux

Jane Haynes

2 min read

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06-09-2024

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Linux is a powerful operating system, often praised for its flexibility and robustness. Knowing which version of Linux you are running can be crucial for troubleshooting issues, ensuring compatibility with software, or simply for curiosity’s sake. In this article, we will explore various methods to check the OS version in Linux, using simple commands and tools.

Why Check Your Linux OS Version?

Understanding your Linux OS version is important for several reasons:

• Software Compatibility: Some applications require specific versions of the OS.
• System Updates: Knowing the version helps in deciding when to upgrade.
• Troubleshooting: Identifying your version can aid in resolving issues more effectively.

Methods to Check Linux OS Version

There are multiple ways to check your Linux version. Here are some common methods:

1. Using the lsb_release Command

This command provides a standard way to query the version of your Linux distribution.

To check your OS version, follow these steps:

1. Open your terminal.

2. Type the following command and press Enter:

   lsb_release -a
   

Output example:

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.1 LTS
Release:        20.04
Codename:       focal

2. Checking the /etc/os-release File

The /etc/os-release file contains information about your Linux distribution.

To view this file, follow these steps:

1. Open your terminal.

2. Enter the following command:

   cat /etc/os-release
   

Output example:

NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian

3. Using the uname Command

The uname command provides kernel information, which also includes the operating system name.

To use it, type:

uname -a

Output example:

Linux my-computer 5.8.0-53-generic #60-Ubuntu SMP Mon Feb 15 14:25:01 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

4. Checking the Version of a Specific Distribution

Certain Linux distributions have their own commands or files for checking the version. Here are examples for a couple of popular distros:

• Debian-based systems (like Ubuntu):

  cat /etc/debian_version
  

• Red Hat-based systems (like CentOS):

  cat /etc/redhat-release
  

Conclusion

Checking your OS version in Linux is a straightforward process, with various methods available depending on your preferences. Whether you choose the lsb_release command, look at the /etc/os-release file, or use uname, knowing your version will empower you to manage your system more effectively.

Additional Resources

• Linux Command Line Basics
• Introduction to Linux Distributions
• Understanding the Linux File System

By keeping these methods in mind, you can always be informed about your Linux environment and ensure your system runs smoothly. Happy exploring!