Red Hat Enterprise Linux powers thousands of business servers worldwide. System administrators need to verify their installed release regularly for updates, compatibility checks, and troubleshooting.
Knowing how to check RHEL version in Linux helps you maintain security patches, install compatible software, and manage your infrastructure effectively. Different applications require specific releases to function properly.
The operating system stores version information in multiple locations. You can access this data through simple commands that take seconds to execute.
This guide covers three reliable methods administrators use daily. Each approach provides accurate results and serves different purposes depending on your needs.
How To Check RHEL Version in Linux?
You can verify your RHEL release through several command-line methods. Each technique accesses system files that store version details.
Choose the method that fits your workflow best. All three approaches deliver accurate information instantly.
Read the Release File
The fastest way to check RHEL version in Linux uses a single command. Open your terminal and type cat /etc/redhat-release.
The system displays your version immediately. You’ll see output like “Red Hat Enterprise Linux release 8.4 (Ootpa)”.
This method works on all RHEL installations. The release file exists by default and updates automatically when you upgrade your system.
Query System Information
The hostnamectl command provides comprehensive details about your machine. Run it without any arguments to see all system properties.
You’ll find your operating system version listed alongside hostname, kernel version, and hardware architecture. This approach gives you broader context about your server environment.
The output appears in an organized format. You can quickly scan for the information you need.
Check Package Information
RPM package manager stores version data you can query directly. Use rpm -q redhat-release to see the installed package name.
The command returns something like “redhat-release-8.4-1.el8”. This shows both the version number and the specific package build.
Package queries help when you need precise details for documentation or compliance reports. The output format works well for automation scripts.
Automate Across Multiple Servers
You can check RHEL version in Linux across your entire infrastructure using SSH loops. Create a simple bash script that connects to each machine.
The script runs your chosen command remotely and collects the results. This saves time when managing large server fleets.
Store the output in a central file for quick reference. Regular audits help you track which systems need updates.
FAQs
What file contains RHEL version information?
The /etc/redhat-release file contains your version details. You can read it with the cat command to see your installed release instantly.
Does hostnamectl show RHEL version?
Yes, hostnamectl displays your operating system version along with other system information. It provides more comprehensive details than just the release file.
Can I check RHEL version remotely?
You can check RHEL version in Linux remotely using SSH. Connect to the server and run any standard version check command through your terminal.
What do RHEL version numbers mean?
RHEL uses major.minor numbering. The major number indicates significant platform changes. Minor numbers represent updates and security patches within that major release.
Why verify RHEL version before installing software?
Applications require specific RHEL versions to function correctly. Checking your version prevents compatibility issues and ensures smooth software installation without errors or conflicts.