shell脚本一键配置本地yum源

#!/bin/bash
#Author:GaoHongYu
#QQ:1061767621
#Time:2019-12-26 16:30:19
#Name:yumgz.sh
#Version:V1.0
CKGZ=$( df -Th | grep -o "iso9660" )
KJGZ=$( cat /etc/fstab | grep -o "iso9660" )
read -p "欢迎使用Yum自动挂载脚本，y开始|n退出: " xw
        if [ $xw == y ];then
            echo "$CKGZ" &> /dev/null
        if [ "$CKGZ" == ‘iso9660‘ ];then
            echo "检测到您的光盘已挂载"
        elif [ $? -ne 0 ];then
            echo "您的光盘未挂载,接下来将自动进行挂载！"
            mount /dev/sr0 /media/cdrom &> /dev/null
        fi
        if [ $? -eq 0 ];then
            echo "光盘已挂载成功!"
            echo "接下来将自动配置本地Yum源!"
            echo "配置中，请耐心等待..."
            cd /etc/yum.repos.d/
            mkdir bak &> /dev/null
            mv C* bak &> /dev/null
            rm -rf /etc/yum.repos.d/local.repo
            echo "[local]" > /etc/yum.repos.d/local.repo
            echo "name=local" >> /etc/yum.repos.d/local.repo
            echo "baseurl=file:///media/cdrom" >> /etc/yum.repos.d/local.repo
            echo "gpgcheck=0" >> /etc/yum.repos.d/local.repo
            echo "enabled=1" >> /etc/yum.repos.d/local.repo
            yum -y clean all &> /dev/null
            yum makecache &> /dev/null
        fi
            echo "$KJGZ" &> /dev/null
        if [ "$KJGZ" == ‘iso9660‘ ];then
            echo "您已设置光盘开机挂载，无需重复设置"
        else
            echo "正在为您设置开机自动挂载！"
            echo "/dev/sr0     /media/cdrom           iso9660  defaults   0 0" >> /etc/fstab
            echo "开机自动挂载已为您配置完毕!"
            echo "恭喜您，本地Yum源已经配置成功！"
        fi
        elif [ "$xw" == ‘n‘ ];then
            echo "退出程序成功！"
            exit 0
fi