more webcheck.template 

###################WEBURL define start###################
define service{
    use               generic-service     ; Name of service template to use
    host_name            webcheck
    service_description       WEBURL
    check_command      check_webpage!-H WEBURL -u INDEX
    is_volatile 0
    max_check_attempts 3
    check_interval 1
    retry_interval 1
    check_period 24x7
    notification_interval 5
    notification_period 24x7
    notification_options w,u,r,c
    contact_groups admins
    }
###################WEBURL define end###################

[root@bogon webcheckes]# more create.sh 
#!/bin/bash 

PATH=/bin:$PATH:$HOME/bin:/sbin:/usr/bin:/usr/sbin 
export PATH
#echo $PATH

usage () { 
    echo -en "USAGE: $0 [web list] or $0 [template] [web list]\nFor example: $0 host.template host.list(Field : [WEB URL] [INDEX WEB PAGE])\n" 1>&2 
    exit 1 
} 
 
if [ $# -gt 2 ];then 
    usage 
    exit 1 
fi 
 
case "$#" in 
    2) 
        template=$1 
        host_list=$2 
    ;; 
    1) 
        template='webcheck.template' 
        host_list=$1 
    ;; 
    0) 
    #    template='webcheck.template' 
    #    host_list='host.list' 
        usage 
    ;; 
esac 
 
if [ ! -f "${template}" ];then 
    echo "template : ${template} not exist!" 1>&2 
    exit 1 
fi 
 
if [ ! -f "${host_list}" ];then 
    echo "host list : ${host_list} not exist!" 1>&2 
    exit 1 
fi 
 
#echo $PWD/${host_list}
WEBTEMP="wcalltemp.txt"
rm $PWD/${WEBTEMP}
#cat $PWD/${host_list}
/bin/cat $PWD/${host_list}| 
while read weburl index
do 
    #echo "${ip}"|grep -oP '^\d{1,3}(\.\d{1,3}){3}$' >/dev/null 2>&1 || Field='not ip' 
    #if [ "${Field}" = 'not ip' ];then 
    #    echo "${ip} not ip!" 1>&2 
    #    exit 1 
    #fi 
    #host_cfg="${hostname}-${ip}.cfg" 
    tmppage="webtemp.txt"
    cp ${template} ${tmppage} 
    sed -i "s/WEBURL/${weburl}/g;s/INDEX/${index}/g" ${tmppage}
    /bin/cat ${tmppage}${WEBTEMP} 
done
/bin/cat webcheck_org.template>webcheck_${host_list}.cfg
/bin/cat ${WEBTEMP}webcheck_${host_list}.cfg
rm $PWD/${WEBTEMP}

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

service nagios restart