平時在安裝或更新CentOS軟件時，yum方式是最簡單方便的，而系統默認到yum更新源地址不穩定，所以需要對更新源地址進行修改，那么linux CentOS 6怎么換更新源呢?今天小編與大家分享下Linux CentOS 6換更新源的具體操作步驟，有需要的朋友不妨了解下。

Linux CentOS 6換更新源方法

1.進入root。

2.備份CentOS-Base.repo

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

3.創建一個新的CentOS-Base.repo。

vim CentOS-Base.repo

4.直接復制，或輸入下列進去(注意：復制的話前面的‘#’號要注意是否有漏掉。)

# CentOS-Base.repo

#

# The mirror system uses the connecting IP address of the client and the

# update status of each mirror to pick mirrors that are updated to and

# geographically close to the client. You should use this for CentOS updates

# unless you are manually picking other mirrors.

#

# If the mirrorlist= does not work for you, as a fall back you can try the

# remarked out baseurl= line instead.

#

#

[base]

name=CentOS-$releasever - Base - mirrors.ustc.edu.cn

baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/os/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os

gpgcheck=1

gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6

#released updates

[updates]

name=CentOS-$releasever - Updates - mirrors.ustc.edu.cn

baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/updates/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates

gpgcheck=1

gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6

#additional packages that may be useful

[extras]

name=CentOS-$releasever - Extras - mirrors.ustc.edu.cn

baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/extras/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras

gpgcheck=1

gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6

#additional packages that extend functionality of existing packages

[centosplus]

name=CentOS-$releasever - Plus - mirrors.ustc.edu.cn

baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/centosplus/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus

gpgcheck=1

enabled=0

gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6

#contrib - packages by Centos Users

[contrib]

name=CentOS-$releasever - Contrib - mirrors.ustc.edu.cn

baseurl=http://mirrors.ustc.edu.cn/centos/$releasever/contrib/$basearch/

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib

gpgcheck=1

enabled=0

gpgkey=http://mirrors.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-6

5.保存：按'Shift'+';'，再按'x',回車。

6.替換CentOS-Base.repo。

cp -f CentOS-Base.repo /etc/yum.repos.d

出現是否覆蓋，按 y 回車。

7.生成緩存。

yum makecache

8.刪除自己創建的CentOS-Base.repo。

rm CentOS-Base.repo