unix shell script to exclude a date from database backup schedule

1. the exclude script, it return 1 if the database is excluded, otherwise return 0.
more ./exclude_date.ksh
TODAY=`date +%Y%m%d`
EXCLUDEFILE=/home/oracle/dba/exclude.date
if [ -f  $EXCLUDEFILE ] ; then
echo "exclude date file exists"
echo $TODAY
EXCLUDE=`grep $TODAY $EXCLUDEFILE|grep -c $1`
        if [ $EXCLUDE -ne 0 ]; then
        echo "today is excluded"
        exit 1
        else
        echo "today is not excluded"
        exit 0
        fi
else
echo "exclude file does not exists for $1"
fi
echo "reach end of the script"
exit 0

2. the backup script calls the exclude script.

...
/home/oracle/dba/exclude_date.ksh $DB
if [ $? -eq 1 ] ; then
exit
fi
...