The latest CentOS version is CentOS7 (version 7.7.1511)
However, here are the others CentOS version under support:
CentOS 6 (version 6.6.8) End Of Life (EOL) CentOS
CentOS 5 — version 5.5.11 –> 31st March 2017
CentOS 4 — version 4.4.9 –> 29th February 2012
8 Ways to Check CentOS Version
You should be aware that the CentOS version is made up of three components before learning how to check it:
- Major Version: Major release version number
- Minor Version: Minor release version number
- Monthstamp: codebase month and year timestamp
1. /etc/centos-release file
The file specifically for CentOS contains information on the release and version of CentOS.
- Major Version: 8
- Minor Version: 1
- Monthstamp: 1911 i.e. November 2019.
2. /etc/system-release file
This file also contains the same information as the centos-release file.
3. /etc/os-release file
This file contains the Linux OS information. So, this file contains the major version number.
4. /etc/redhat-release file
CentOS is built on top of RedHat Linux distribution. Besides, this file contains the same information as the centos-release file.
5. lsb_release command
This command doesn’t come pre-installed with the CentOS server. However, you can install it using the following command.
Then, check the CentOS version using the following command.
6. rpm query
Besides using the command above, we can query the rpm package manager to get the CentOS version information.
7. rpm macro
Here is a simple rpm macro evaluation to get the CentOS major version.
8. hostnamectl command
Next, the hostnamectl command can be used to get the system information. Also, it reveals the Operating System version.
In Docker containers, the hostnamectl command is inoperable. My personal VPS machine produced this command output. The other scripts’ output comes from a CentOS 8 Docker container that is local to me.