How To Check Your CentOS Version.

In this tutorial, we’ll show several different commands on how to check what version of CentOS is installed on your system.

Check CentOS version from the Command Line.

The lsb_release command displays Linux Standard Base (LSB) information about your Linux distribution.

lsb_release -a

Your CentOS version will be shown on the Description line.

Alternative methods to check CentOS version

Check CentOS version using the rpm command.

You can use the rpm tool to display information about the centos-release package, which includes the CentOS version in its name:

rpm --query centos-release

Output:
centos-release-7-9.2009.1.el7.centos.x86_64

Check CentOS version using the /etc/centos-release file

To find your CentOS version enter the following command:

cat /etc/centos-release

CentOS Linux release 7.9.2009 (Core)

Check your CentOS version using the /etc/os-release file

The /etc/os-release file is present on all systems running systemd and contains operating system identification data.

This method will only work if you have CentOS 7:

cat /etc/os-release

NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

Check your CentOS version using the hostnamectl command

hostnamectl is a command that allows you to set the system hostname , but you can also use it to find your CentOS branch.

This method will work only if you have CentOS 7:

hostnamectl

Static hostname: liviu.test
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 114054dc5a87478f99adbbed6027eea0
           Boot ID: f1abc254dae0418498e32057c515a92e
    Virtualization: kvm
  Operating System: CentOS Linux 7 (Core)
       CPE OS Name: cpe:/o:centos:centos:7
            Kernel: Linux 3.10.0-1160.76.1.el7.x86_64
      Architecture: x86-64

Conclusion

In this guide, we have shown you how to find the version of CentOS installed on your system.