CentOS更改yum源与更新系统

[1] 首先备份/etc/yum.repos.d/CentOS-Base.repo

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

[2] 进入yum源配置文件所在文件夹

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

[3] 下载163的yum源配置文件，放入/etc/yum.repos.d/(操作前请做好相应备份)

[root@localhost yum.repos.d]#

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

[4] 运行yum makecache生成缓存

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

[5] 更新系统

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

[6] 安装vim编辑器

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

下载安装扩展源：

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

Rpm -ivh epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

Rpm -ivh remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm