#!/bin/bash
#部署DHCP服務
#userli 20250319#檢查是否為root用戶
if[  "$USER"  != "root"   ]
thenecho "錯誤：非root用戶，權限不足！"exit  0
fi#配置網絡環境
read   -ep   "請給本機配置一個IP地址(不用掩碼)："    qq
read  -ep   "請輸入網段的掩碼："    laodi
read   -ep     "請輸入網關IP地址："      c
read   -ep    "請輸入首選DNS地址："    a
read   -ep    "請輸入備用DNS地址："     b
sed -i 's/^BOOTPROTO=.*$/BOOTPROTO=static/' /etc/sysconfig/network-scripts/ifcfg-ens33
echo -e "IPADDR=$qq\nNETMASK=$laodi\nGATEWAY=$c\nDNS1=$a\nDNS2=$b" >> /etc/sysconfig/network-scripts/ifcfg-ens33 systemctl restart network#檢查網絡通信
ping   www.baidu.com   -c  3
if[ $? = 0 ]thenecho "外網通訊良好！"elseecho  "丫的你在逗我嗎？網都沒有安nm呢！"exit  1
fi#防火墻與高級權限
systemctl stop firewalld && systemctl disable firewalld  && echo "防火墻已經關閉"
sed -i 's/SELINUX=*/SELINUX=disabled/g'  /etc/selinux/config  &&   setenforce 0  && echo "關閉selinux"#切換阿里云
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
yum clean all
yum makecache#使用yum安裝DHCP
yum install -y  dhcp
if [ $? = 0 ]
thenecho "DHCP安裝成功"elseecho "DHCP安裝失敗，10秒后退出"sheep   10exit    0
fi

輸入: “ sh? ?chuang ”? ? ? ?#運行腳本