#!/bin/sh

#
#  CONFIG
#
    dir='/var/run/smart-check'
    get='/root/smart/status.sh'


#
#  MAIN
#
    # dir has to exist
    mkdir -p "$dir"
    
    # file names
    old="$dir/current"
    new="$dir/new"
    
    # generate files
    touch "$old"
    $get >"$new"
    
    # compare
    diff=`diff -q "$old" "$new"`
    if [ -n "$diff" ]
    then
	echo 
	echo "The S.M.A.R.T. indicates a change in the health of one of your hard drives"
	echo 
	echo "New state:"
	cat "$new" | sed 's/^/  /'
	echo 
	echo "Old state:"
	cat "$old" | sed 's/^/  /'
	echo 
    fi
    
    # replace files
    rm "$old"
    mv "$new" "$old"