Ok so you have ran a yum -y update and you now have a new kernel loaded on your system.

If you want to remove an older kernel version, and make no other changes to your system so as not to clutter up your bootloader.

First check wich one you’re using: uname -r

List them all: rpm -qa | grep -i kernel

Remove what you don’t need: rpm -e kernel_version

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written by TMP \\ tags: centos kernel