DB_USER=replc
DB_PASS="your_password"

alert_to="your_email@address.org"
alert_cc=""
alert_subject="REPLICATION FAILED"
alert_message="one of the replication threads on\
the slave server failed or the server is down\n";

rf=$(mktemp)

echo "show slave status\G"|\
mysql -u $DB_USER --password=$DB_PASS > $rf 2>&1


repl_IO=$(cat $rf|grep "Slave_IO_Running"|cut -f2 -d':')
repl_SQL=$(cat $rf|grep "Slave_SQL_Running"|cut -f2 -d':')


if [ "$repl_IO" != " Yes" -o "$repl_SQL" != " Yes" ] ; then
        if [ "$alert_cc" != "" ] ; then
                cc=" -c $alert_cc "
        fi

cat <<EOF | mail -s "$alert_subject"  $alert_to $cc
$alert_message

return from slave status command:
$(cat $rf)
EOF
rm $rf
fi