Linux更换yum源

有时候CentOS默认的yum源不一定是国内镜像，导致yum在线安装及更新速度不是很理想。这时候需要将yum源设置为国内镜像站点。国内主要开源的开源镜像站点应该是网易和阿里云了。

[[email protected] ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

[[email protected] ~]]# cd /etc/yum.repos.d/

[[email protected] yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

[[email protected] yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

[[email protected] yum.repos.d]# wget http://mirrors.163.com/.help/CentOS5-Base-163.repo

[[email protected] yum.repos.d]# yum makecache

[[email protected] yum.repos.d]# yum -y update

[[email protected] ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

[[email protected] ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

[[email protected] ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

[[email protected] ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

[[email protected] ~]# yum makecache

[[email protected] ~]# yum -y update

将上面的镜像源覆盖到sources.list里，保存。

将上面的一个镜像源 覆盖 到sources.list里，保存。

4.2 sudo rm -f /var/lib/apt/lists/lock 删除lock文件

4.3 再用 sudo apt-get update 更新源

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