#!/bin/bash if [ "$1" = "del" ]; then exit fi isnew_mac=$(cat /etc/dnsmasq.hostsfile|grep -v "^#"|grep "$2") generatedhostname=$(echo "$2"| tr -d ':') if [ -z "$isnew_mac" ]; then echo $2,PC$generatedhostname >> /etc/dnsmasq.hostsfile pid=`pidof dnsmasq` kill -HUP $pid 2> /dev/null fi