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

Written by admin · 1 min read >

In 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:
2.6.32-431.11.2.el6.x86_64
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: <https://www.gnu.org/software/coreutils/uname>
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 [email protected], 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.

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