替换centos 镜像源

#!/usr/bin/env bash

if [ ! -f /etc/yum.repos.d/CentOS-Base.repo.bak ]; then
  cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
fi

sed -i '/mirrorlist/d' /etc/yum.repos.d/CentOS-Base.repo

sed -i '/releasever\/os/c\baseurl=http:\/\/mirrors.xxx.org\/nexus\/repository\/centos-proxy\/\$releasever\/os\/\$basearch' /etc/yum.repos.d/CentOS-Base.repo
sed -i '/releasever\/updates/c\baseurl=http:\/\/mirrors.xxx.org\/nexus\/repository\/centos-proxy\/\$releasever\/updates\/\$basearch' /etc/yum.repos.d/CentOS-Base.repo
sed -i '/releasever\/extras/c\baseurl=http:\/\/mirrors.xxx.org\/nexus\/repository\/centos-proxy\/\$releasever\/extras\/\$basearch' /etc/yum.repos.d/CentOS-Base.repo
sed -i '/releasever\/centosplus/c\baseurl=http:\/\/mirrors.xxx.org\/nexus\/repository\/centos-proxy\/\$releasever\/centosplus\/\$basearch' /etc/yum.repos.d/CentOS-Base.repo

yum makecache