df -g |awk '{print $4,$7}'|egrep -v 'Free|-'|sed "s/%//g"|while read i j
do
if [[ $i -ge 80 ]]
then
echo "scan time $date:filesystem $j usage over 80% please takecare!!!"
fi
if [[ $i -ge 70 && $i -lt 80 ]]
then
echo "scan time $date:filesystem $j usage over 70% please takecare!"
fi
done