Shell脚本——DHCP自动部署

#! /bin/bash
IPSAG="10.10.10"
DNSIP="10.10.10.10"
DN="ns.gr.org"
cat  >  /etc/dhcpd.conf << +END+
ddns-update-style interim;
ignore client-updates;
subnet $IPSAG.0 netmask 255.255.255.0 {
option routers                  $DNSIP;
option subnet-mask              255.255.255.0;
option domain-name              "$DN";
option domain-name-servers      $DNSIP;
option time-offset              28800;
range dynamic-bootp $IPSAG.100 $IPSAG.200;
default-lease-time 21600;
max-lease-time 43200;
host boss {
next-server marvin.redhat.com;
hardware ethernet 12:34:56:78:AB:CD;
fixed-address 207.175.42.188;
}
}
+END+
service dhcpd restart
ps -ax | grep dhcpd