RedHat DHCP脚本自动安装

zdc253212956

　　#!/bin/bash

dhcpconf=/etc/dhcpd.conf

rpm -q dhcp &> /dev/null
if [ $? -ne 0 ];then
    yum -y install dhcp
fi

grep "subnet" $dhcpconf  &> /dev/null

if [ $? -ne 0 ];then
    echo "ddns-update-style interim;
ignore client-updates;
default-lease-time 21600;
max-lease-time 43200;" > $dhcpconf
fi

while true
do
    read -p "please input Network:" network
    read -p "please input Netmask:" netmask
    read -p "please input Gateway:" gateway
    read -p "please input DNS:" dns
    read -p "please input Start_IP:" start_ip
    read -p "please input End_IP:" end_ip

    grep $network $dhcpconf &> /dev/null

    if [ $? -ne 0 ];then
        echo "subnet $network netmask $netmask {
               option routers                  $gateway;
            option subnet-mask              $netmask;
               option domain-name-servers      $dns;
               range dynamic-bootp $start_ip $end_ip;
        }" >> $dhcpconf

        read -p "continue to do (yes/no)?" yn

        if [ $yn = "no" ]; then
            exit 0
        fi
    fi
done

　　脚本二
　　#!/bin/bash
conf="/etc/dhcpd.conf"
rpm -q dhcp &> /dev/null
if [ $? -ne 0 ];then
    yum -y install dhcp
fi


grep "subnet" $conf &> /dev/null
if [ $? -ne 0 ]; then
    echo "
    ddns-update-style interim;
    ignore client-updates;
    default-lease-time 21600;
    max-lease-time 43200;
    " > $conf
fi

read -p "please input network:" network
read -p "please input netmask:" netmask
read -p "please input gateway:" gateway
read -p "please input DNS:" dns
read -p "please input start_ip:" start_ip
read -p "please input end_ip:" end_ip

echo "
subnet $network netmask $netmask {
        option routers                  $gateway;
    option subnet-mask              $netmask;
        option domain-name-servers      $dns;
        range dynamic-bootp $start_ip $end_ip;
}

" >> $conf
service dhcpd restart


　　脚本三
　　#!/bin/bash

dhcpconf=/etc/dhcpd.conf

rpm -q dhcp &> /dev/null
if [ $? -ne 0 ];then
    yum -y install dhcp
fi

grep "subnet" $dhcpconf  &> /dev/null

if [ $? -ne 0 ];then
    echo "ddns-update-style interim;
ignore client-updates;
default-lease-time 21600;
max-lease-time 43200;" > $dhcpconf
fi

while true
do
    read -p "please input Network:" network
    read -p "please input Netmask:" netmask
    read -p "please input Gateway:" gateway
    read -p "please input DNS:" dns
    read -p "please input Start_IP:" start_ip
    read -p "please input End_IP:" end_ip

    grep $network $dhcpconf &> /dev/null

    if [ $? -ne 0 ];then
        echo "subnet $network netmask $netmask {
               option routers                  $gateway;
            option subnet-mask              $netmask;
               option domain-name-servers      $dns;
               range dynamic-bootp $start_ip $end_ip;
        }" >> $dhcpconf

        read -p "continue to do (yes/no)?" yn

        if [ $yn = "no" ]; then
            service dhcpd status &> /dev/null
            if [ $? -ne 0 ]; then
                service dhcpd start &> /dev/null
            else
                service dhcpd reload &> /dev/null
            fi
            exit 0
        fi
    fi
done