How To Check the Kernel Version in Linux / Ubuntu / CentOS

Reading Time: 2 minutesIn this article and related video, we will be discussing how to check the kernel version in both Ubuntu and CentOS Linux. The following command works with all Linux distributions, such as Red Hat, CentOS, Debian, and Ubuntu. It also works on other UNIX-like operating systems such as HPUX, FreeBSD, OpenBSD, Solaris, etc. Use the following command to check which kernel version your server is currently running:  
Here’s the code to run from the command line: uname -r You should receive a result similar to the following: 2.6.32-431.11.2.el6.x86_64
The kernel version output from above can be interpreted with the following key:
2 = The Main Kernel Version
6 = The Major Revision
32 = The Minor Revision
431.11.2.el6 = The Minor Fix/Revision Detail
For more information and options, we can review the manual page (or simply the man page) for uname. The man page provides the following additional information: NAME: uname - print system information SYNOPSIS: uname [OPTION]... DESCRIPTION: Print certain system information. With no OPTION, same as -s. -a, --all print all information, in the following order, except omit -p and -i if unknown: -s, --kernel-name print the kernel name -n, --nodename print the network node hostname -r, --kernel-release print the kernel release -v, --kernel-version print the kernel version -m, --machine print the machine hardware name -p, --processor print the processor type (non-portable) -i, --hardware-platform print the hardware platform (non-portable) -o, --operating-system print the operating system --help display this help and exit --version output version information and exit Full documentation at: <> or available locally via: info '(coreutils) uname invocation'   If you have thoughts or questions about how to locate your kernel version or any other information about your server, simply open a ticket with us at, give us a call at 800-580-4985 or, open a chat with us to speak to one of our Level 3 Support Admins or a Solutions Advisor today! As always, thank you for hosting with Liquidweb! Video authored by Justin Palmer.

Author Bio

About the Author: David Singer

I am a g33k, Linux blogger, developer, student and Tech Writer for My passion for all things tech drives my hunt for all the coolz. I often need a vacation after I get back from vacation....

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