#!/bin/bash
# Program: Monitor hard disk and shutdown system if temp >= 35
# http://www.cyberciti.biz/tips/howto-monitor-hard-drive-temperature.html
# Author: nixCraft < vivek @ nixCraft DOT com >
################################################
HDDS="/dev/sda /dev/sdb /dev/sdc" # my hdd
HDT=/usr/sbin/hddtemp
LOG=/usr/bin/logger
DOWN=/sbin/shutdown
ALERT_LEVEL=35
for disk in $HDDS
do
  if [ -b $disk ]; then
	HDTEMP=$($HDT $disk | awk '{ print $4}' | awk -F '°' '{ print $1}')
        if [ $HDTEMP -ge $ALERT_LEVEL ]; then
           $LOG "System going down as hard disk : $disk temperature $HDTEMP°C crossed its limit"
           sync;sync
           # add email code, make sure you add 2m delay
           # mail -s "HDD temperature >= 35 @ $(hostname)" you@domain.com </dev/null
           # sleep 2m
           # going down 
           $DOWN -h 0
        fi
  fi
done