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This article introduces the relevant knowledge of "what is the difference between the upgrade command yum upgrade and yum update in Linux". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

There are two Linux upgrade commands, yum upgrade and yum update, which are different:

The code is as follows:

Yum-y update

Upgrade all packages as well as software and system kernels

The code is as follows:

Yum-y upgrade

Upgrade only all packages, not software and system kernel

Yum-y upgrade and yum-y update are tested in the experiment.

Before upgrad

System version: centos5.5

Kernel version: 2.6.18-194.el5

Simple profile modifications were made before upgrade

After yum-y upgrade upgrade

System version: centos5.7

Kernel version: 2.6.18-194.el5

After yum-y update upgrade

System version: centos5.7

Kernel version: 2.6.18-238.el5

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