Linux

set -x
mount | grep "/test" > /dev/null
if [ $? -eq 0 ]; then
echo "your rsync goes here" & RPID=$!
else
echo "will not rsync, unable to find mountpoint"
fi
e=0
while [ $e -eq 0 ]
do
mount | grep "/test" > /dev/null
if [ $? -gt 0 ]; then
echo "Cannot see mountpoint!, will abort"
e=$(( $e + 1 ))
kill $RPID
sleep 1
fi
done

mkdir /mnt/mybackup/mybackup

rsync ... /mnt/mybackup/mybackup/.