搭建网络yum源

 　　#!/bin/bash
　　 #Linux搭建163网络yum源
    cd /etc/yum.repos.d/
    echo "-------------------下载163-repo--------------------"
    wget  http://mirrors.163.com/.help/CentOS6-Base-163.repo    2&>/dev/null
    sed -i "s/$releasever/6/g" /etc/yum.repos.d/CentOS6-Base-163.repo
    sed -i "s/RPM-GPG-KEY-CentOS-6/RPM-GPG-KEY-CentOS-6/g"  /etc/yum.repos.d/CentOS6-Base-163.repo
    yum clean all        2&>/dev/null
    yum makecache        2&>/dev/null
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原文地址：https://www.cnblogs.com/losbyday/p/5967101.html