CentOS is the best Linux os available in market. Dude to its easy to use functionality, in most of the Web server it is deployed. Yum is one of the Linux command which makes the user job easier to update things or to install different compatible software’s. In this short tutorial I will show you how to update kernel in just two easy steps.

How To:

First: Login to SSH

Second: Run the command below to update kernel


yum update kernel

If a new update is available it will notify like below:

Excluding Packages in global exclude list
Setting up Update Process
Resolving Dependencies
–> Running transaction check
—> Package kernel.x86_64 0:2.6.18-274.18.1.el5 set to be installed
–> Finished Dependency Resolution

Dependencies Resolved

Package Arch Version Repository Size
kernel x86_64 2.6.18-274.18.1.el5 updates 21 M

Transaction Summary
Install 1 Package(s)
Upgrade 0 Package(s)

Total download size: 21 M
Is this ok [y/N]:

Just press Y and click enter to auto complete the kernel update process.