#!/bin/sh
. /usr/local/libexec/nagios/utils.sh

_sizes=`vmstat -m | awk '/^ *UVM amap/ { gsub("K", " "); print $4  " " $6}'`
_free=`dc -e "3 k 1 ${_sizes} / - 100 * p"`

if [ ${_free%.*} -lt 25 ]; then
	echo WARNING: less than 25% amap free [${_free}%]!
	exit $STATE_WARNING
fi

if [ ${_free%.*} -lt 10 ]; then
	echo CRITICAL: less than 10% amap free [${_free}%]!
	exit $STATE_CRITICAL
fi

echo OK: [${_free}%] free
exit $STATE_OK