CentOS: change yum source and update system

[1] First back up/etc/yum. repos. d/CentOS-Base.repomv/etc/yum. repos. d/CentOS-Base.repo/etc/yum. repos. d/CentOS-Base.repo.backup [2] go to the yum source configuration file folder [root@localhostyum.repos.d] # cd/etc

[1] First back up/etc/yum. repos. d/CentOS-Base.repo

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

[2] go to the yum source configuration file folder

[root@localhost yum.repos.d]# cd /etc/yum.repos.d/

[3] Download the 163 yum source configuration file and put it in/etc/yum. repos. d/(please back up the file before the operation)

[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

[4] run yum makecache to generate cache

[root@localhost yum.repos.d]# yum makecache

[5] updating the system

[root@localhost yum.repos.d]# yum -y update

[6] install the vim editor

[root@localhost ~]# yum -y install vim*