Shulou(Shulou.com)06/02 Report--

There are many ways to update, this time to install yum when there is a network.

The command line is simple.

Yum update

Then there is y,

If you restart directly after the update, you will find that there are several more startup items, so how to delete these extra kernels? Or the old unused kernel?

1. View the currently running kernel version

Uname-a

2. View all kernel in the system

Rpm-Q kernel

3 、 delete old kernel:

Yum remove kernel-3.XXXXX.el7

Yum remove kernel-d . .el7

These are deleted extra kernels.

4 、 reboot:

Reboot

It is found that the extra kernel boot has been deleted.

Detailed steps of other partners are attached.

1. Check the current kernel version of the system:

# uname-a

Linux localhost.localdomain 3.10.0-229.20.1.el7.x86_64 # 1 SMP Tue Nov 3 19:10:07 UTC 201

GNU/Linux

two。 Check all the kernel RPM packages on the system:

# rpm-qa | grep kernel

Kernel-3.10.0-229.14.1.el7.x86_64

Kernel-3.10.0-229.el7.x86_64

Abrt-addon-kerneloops-2.1.11-22.el7.centos.0.1.x86_64

Kernel-tools-libs-3.10.0-229.20.1.el7.x86_64

Kernel-3.10.0-229.20.1.el7.x86_64

Kernel-tools-3.10.0-229.20.1.el7.x86_64

3. Delete the RPM package of the old kernel

Yum remove kernel-3.10.0-229.14.1.el7

Yum remove kernel-3.10.0-229.el7

4. Restart the system

# reboot

Note: no manual modification of / boot/grub/menu.lst is required

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