#!/bin/bash
#exec 1>/tmp/${0##*/}.log 2>&1
df -P | while read LINHA;
do
usage=$(echo "$LINHA" | nawk '{print int(100*$3/$2)}')
dev=$(echo "$LINHA" | nawk '{print $1}')
limite=90
if [ "$usage" -gt "$limite" ];
then
  echo quota de $dev em $usage% ultrapassou $limite% | mail seuEmail@seuProvedor.com -s "Quota de ' $dev ' com '$limite'% de uso."
else
  echo quota de $dev em $usage% dentro dos $limite% as $(date +%X)
fi
done
exit 0