How to remove the old kernel after Linux kernel upgrade __linux

How to remove the old kernel after Linux kernel upgradeFirst we need to look at which kernel is currently in use:

Uname-r This command will tell you the kernel version currently in use

Next, if you are compiling the kernel yourself, please delete the following files and folders

1. Remove obsolete kernel library files from the/lib/modules/directory
2. Remove obsolete kernel source code from the/usr/src/kernels/directory
3. Delete the core files and kernel images that were launched in the/boot directory
4. Change the/BOOT/GRUB/MENU.LST, delete the unused launch list

If you are using a Yum or RPM Package Manager update

Rpm-qa | grep kernel* Find all Linux kernel versions
Rpm-e kernel-(the kernel version to be deleted)

When you delete with the RPM command line, you will encounter a dependency problem, that is, if the uninstall occurs when the uninstall is not allowed, please use

RPM-E--nodeps kernel-(version to be deleted) do not check dependencies delete directly

Or:

Yum Remove kernel-(version to be removed)

This is recommended to remove, it will prompt all dependencies, if you confirm that he will delete all the relevant documents, that is, the uninstall is very clean.