dns_check_existence.sh

dns_check_existence.sh

#!/bin/sh
# Version 140624_1534

NAGIOS_CHECK_DNS_COMMAND='/usr/local/nagios/libexec/check_dns'
HOSTNAME=$1
EXITSTATUS='1' # Defaults

function usage {
	cat <<-EOF
	$(basename ${0}) is check HOSTMANE and IPAddress on DNS server.
	Usage:    $(basename ${0}) HOSTMANE
	EOF
}

if [ $# -ne 1 ]
then
	usage
	exit 0
else
	RESULTS=$($NAGIOS_CHECK_DNS_COMMAND $HOSTNAME)
	EXITSTATUS=$?
	if [ $EXITSTATUS -ne 0 ]
	then
		#echo "$HOSTNAME|NoName"
		echo "NoDNSName"
	else
		#echo -n "$HOSTNAME|"
		#echo -n 'IPAddress:'
		# $RESULTS ex : DNS OK: 0.017 seconds response time. www.example.jp returns 10.2.2.2|time=0.017038s;;;0.000000 
		echo $RESULTS | cut -d"|" -f1 | sed -e "s/^.* //"
	fi
fi