#!/bin/bash


##################################################
TMP=/tmp
CACHE_FILE=/tmp/check_tmp_folder.txt
MAIL_TO="root@localhost"
MAIL_SUBJ="Suspicious temp files."
##################################################

cd $TMP
FOUND=`find . -type f \! -user root | sort`


for ONE_FILE in $FOUND; do
        if [ "`file $ONE_FILE | grep executable`" ]; then
                # We've found an executable file that probably shouldn't be there.
                RES=`echo -e "$RES\n$ONE_FILE"`
        fi
done

# Create a cache file if required.
if [ ! -f $CACHE_FILE ]; then
        touch $CACHE_FILE
fi

# Don't send the same reports over, and over again.
if [ "`cat $CACHE_FILE`" == "$RES" ]; then
        RES=""
else
        echo "$RES" > $CACHE_FILE
fi

# Send warning e-mail?
if [ "$RES" != "" ]; then
        RES=`echo -e "Some suspicious files were found in $TMP folder:\n\n$RES"`
        echo "$RES" | mail -s "$MAIL_SUBJ" "$MAIL_TO"
fi