The difference between yum-y upgrade and yum-y update

Virtual Machine Lab Environment:

Virtual machines: VMware

Operating system: CentOS

[[Email protected]~]# uname-a

Linuxlocalhost.localdomain 2.6.32-573.7.1.el6.i686 #1 SMP Tue Sep 19:05:58 UTC2015 i686 i686 i386 gnu/linux

[[Email protected]~]# cat/etc/redhat-release

CentOS Release 6.7 (Final)

[[Email protected]~]# yum–y Update

# The kernel, OS version, all software upgrades, and changes to the relevant configuration environment, so operations personnel for the production server operating system upgrade to be cautious.

[Email protected]~] #uname –a

Linuxlocalhost.localdomain 2.6.32-642.el6.i686 #1 SMP Tue may 16:13:51 UTC 2016i686 i686 i386 gnu/linux

[[Email protected]~]# cat/etc/redhat-release

CentOS Release 6.8 (Final)

This article is from the "Linux~dba~mba~eie" blog, make sure to keep this source http://sky9896.blog.51cto.com/2330653/1785055

The difference between yum-y upgrade and yum-y update