backup script

#!/bin/bash

source=myLogin@hostname:
snapshotDir=/path/to/backup/dir

if [ -d $snapshotDir/hourly.3 ]
then
    rm -rf $snapshotDir/hourly.3
fi

if [ -d $snapshotDir/hourly.2 ]
then
    mv $snapshotDir/hourly.2 $snapshotDir/hourly.3
fi

if [ -d $snapshotDir/hourly.1 ]
then
    mv $snapshotDir/hourly.1 $snapshotDir/hourly.2
fi

if [ -d $snapshotDir/hourly.0 ]
then
    cp -al $snapshotDir/hourly.0 $snapshotDir/hourly.1
fi

rsync -va --delete -e ssh $source $snapshotDir/hourly.0

touch $snapshotDir/hourly.0