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Update the Linux Kernel

For Dedicated and Dynamic Cloud Servers

Learn how to update the Linux Kernel on your server in order to keep your system protected against security vulnerabilities.

It is suggested to first update your operating system to the newest version, which should install a newer kernel in the process. You can then use the steps below to check if there is a newer version of the kernel available for install.

Red Hat 4 or Earlier

If your system is registered with Red Hat Network (RHN), then you can use the up2date command as follows:

# up2date -f kernel

For SMP kernel (multi core or multiple CPU) use command:

# up2date -f kernel-smp
Fedora, CentOS, RHEL 5

Use the yum command:

# yum update kernel

Use the rpm command if you have already downloaded an RPM file:

# rpm -ivh kernel*

Use the zipper command:

zipper update kernel
Debian and Ubuntu

Use the apt-get command:

apt-get update && apt-get upgrade
For additional information, you may want to reference: