nagios自动扫描主机并加入监控的脚本，很鸡肋，写着玩

#!/bin/bash
#written by booduklee
#time: 2011-06-24
# this is used to jiankong alive-host
export PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
ln -s /usr/local/nagios/bin/nagios /bin/nagios
------find host alive------
nmap -sP 192.168.18.0/24 | awk '{print $2}' | grep '^[[:digit:]]' | while read i;
do
host=$(echo $i | awk -F . '{print $NF}')
cat >> /usr/local/nagios/etc/objects/localhost.cfg << !
define host {
host_name       \$host
alias   \$host
address \$i
check_command   check-host-alive
notification_options    d,u,r
check_interval  1
max_check_attempts      5
contact_groups  admins
notification_interval   10
notification_period     24x7
}
!
done