DHCP 給每台主機都設定固定IP腳本

#讓每台計算機都有固定的IP 腳本

####vim setup_dhcpd.sh

#!/bin/bash

read -p "Do you finished the IP's settings in every client (y/n)? "yn

read -p "How many PC's in this class (ex> 60)? " num

if [ "$yn" = "y" ]; then

    for site in $(seq 1 ${num})

    do

       siteip="192.168.100.${site}"

        allip="$allip $siteip"ping -c 1 -w 1 $siteip > /dev/null 2>&1

        if [ "$?" =="0" ]; then

            okip="$okip$siteip"

        else

            errorip="$errorip$siteip"

            echo "$siteip isDOWN"

        fi

    done

    [ -f dhcpd.conf ] && rmdhcpd.conf

    for site in $allip

        pcname=pc$(echo $site | cut -d'.' -f 4)

        mac=$(arp -n | grep "$site" | awk '{print $3}')

        echo " host $pcname {"

        echo "      hardware ethernet ${mac};"

        echo "      fixed-address ${site};"

        echo " }"

        echo " host $pcname{"     >> dhcpd.conf

        echo "      hardware ethernet ${mac};"     >> dhcpd.conf

        echo " fixed-address${site};" >> dhcpd.conf

        echo " }" >>dhcpd.conf

fi

echo "You can use dhcpd.conf (this directory) to modified your/etc/dhcp/dhcpd.conf" echo "Finished."