更换 Centos 服务器 yum & epel 源

chgyumepel.sh

#! /bin/bash
# Author:Nahsoagoac
# 更换centos服务器yum源和epel源

if [ ! -f /etc/redhat-release ]; then
	OS='ubuntu'
else
	CENTOS_VER=$(rpm -q centos-release|cut -d- -f3)
fi

msgbox()
{
	case $1 in
		text ) color="\e[34;1m"
		;;
		alert ) color="\e[31;1m"
		;;
		result ) color="\e[33;1m"
		;;
		jump ) color="\e[35;1m"
		;;
		pam ) color="\e[32;1m"
	esac
	echo -e "${color}${2}\e[0m\c"
}

yanshi()
{
	for (( i = 0; i < ${1}; i++ )); do
		sleep 0.3
		msgbox "alert" "."
	done
}

if [[ $OS = 'ubuntu' ]]; then
	msgbox "alert" "检测到目前系统为ubuntu，脚本不适用，退出。";echo
else
	msgbox "text" "+===================================+";echo
	msgbox "text" "|   检测到当前系统版本为";msgbox "pam" "centos$CENTOS_VER";msgbox "text" "     |";echo
	msgbox "text" "|  脚本功能：更改系统yum源和epel源  |";echo
	msgbox "text" "+===================================+";echo
	yanshi "5";echo
	mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup 
	msgbox "result" "已备份原有yum源文件为/etc/yum.repos.d/CentOS-Base.repo.backup";echo
	yanshi "5";echo
	mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
	msgbox "result" "已备份原有epel源文件为/etc/yum.repos.d/epel.repo.backup";echo
	yanshi "5";echo
	case $CENTOS_VER in
			5 ) wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
				wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-5.repo
			;;
			6 ) wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
				wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
			;;
			7 ) wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
				wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
			;;
			* )
			;;
	esac
	yum clean all
	yum makecache
	msgbox "result" "已更新yum源和epel源";echo
fi

bash <(curl -s -L https://gist.githubusercontent.com/sarkrui/fd0f585e47077f2c314802c62e26ba78/raw/75d74f1d5572fcf2ba774279c2534e35c397afe4/chgyumepel.sh)