CTLFILE=/tmp/import.ctl
while [ -e $CTLFILE ]
do
ctltime=`date -r $CTLFILE +%s`
nowtime=`date +%s`
diftime=`expr $nowtime - $ctltime`
if [ $diftime -ge 900 ]
then
(echo "ddddddddddddddd."; ls -l $CTLFILE) | mail -s ' alert!' $RECEIVER0 $RECEIVER1 $RECEIVER7
fi
sleep 800
done
date -r filename:last modified date
date +%s : seconds since 00:00:00 1970-01-01