用shell脚本自动化部署dhcp服务，加图文验证
#!/bin/bashread -p "please input your ip: " IP #设置dhcp服务器ip
read -p "please input your gw: " GW #设置dhcp服务器网关
IPNET=$(echo $IP |awk -F. '{print $1"."$2"."$3}')#取网段号
IP_CONF="/etc/sysconfig/network-scripts/ifcfg-eth0"#ip配置文件
sed -i 's/IPADDR=.*/IPADDR='"$IP"'/' $IP_CONF
sed -i 's/GATEWAY=.*/GATEWAY='"$GW"'/' $IP_CONF
service network restart &> /dev/null
rpm -q dhcp &> /dev/null
[ $? -eq 0 ] || yum -y install dhcp &> /dev/null #安装dhcp
dhcp_version=`rpm -qa dhcp | awk -F'-' '{print $2}'`#获取dhcp版本
cd /usr/share/doc/dhcp-"$dhcp_version"
#将模板配置文件进行复制一份
grep -v "#" dhcpd.conf.sample |grep -v "^$"|sed -e 's/192.168.0/'"$IPNET"'/g' > /etc/dhcpd.conf
sed -i '/nis\-domain/d'/etc/dhcpd.conf #不配置域名
sed -i '/domain-name/d'/etc/dhcpd.conf
sed -i 's/'"$IPNET"'.1\;$/'"$GW"'\;/g' /etc/dhcpd.conf
service dhcpd start
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