ubuntu incremental backup script

i've already done by webguru script but it's not working.

http://xmodulo.com/2013/08/how-to-create-secure-incremental-offsite-backup-in-linux.html

Here's a simple script that uses the "itemize" function of rsync to tell you which files have changed, and put those in a seperate dated folder, which is what I think you were requesting:

#!/bin/sh

STAMP=`date +%Y%m%d-%H%M%S`

SRC="sourcefolder"
DST="destfolder"
CHG="$DST/$STAMP"
OUTPUT="rsync.out"

rsync -avi $SRC $DST > $OUTPUT

for CHANGE in `grep ^\>f $OUTPUT | awk '{print $2}'`;
do
        if [ ! -d $CHG ]; then
                mkdir $CHG
        fi
        cp -v $CHANGE $CHG
done

rm -f $OUTPUT

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First time when i've ran script i found below output

|-- 20131201-192343
|   |-- 1.txt
|   |-- 2.txt
|   |-- 3.txt
|   |-- 4.txt
|   `-- 5.txt
|-- xerox
|   |-- hr
|   |   `-- user1
|   |       `-- 5.txt
|   |-- IT
|   |   |-- user2
|   |   |   `-- 3.txt
|   |   `-- user3
|   |       |-- 1.txt
|   |       `-- 2.txt
|   `-- pa
|       `-- user4
|           `-- 4.txt
`-- rsync.out
that time it make a two backup
next time i've modified in hr>user1>5.txt and run the script.Now output is
|-- 20131201-192343
|   |-- 1.txt
|   |-- 2.txt
|   |-- 3.txt
|   |-- 4.txt
|   `-- 5.txt
|-- 20131201-192554
|   `-- 5.txt
|-- xerox
|   |-- HR
|   |   `-- user1
|   |       `-- 5.txt
|   |-- it
|   |   |-- user2
|   |   |   `-- 3.txt
|   |   `-- user3
|   |       |-- 1.txt
|   |       `-- 2.txt
|   `-- pa
|       `-- user4
|           `-- 4.txt
`-- rsync.out

But now i want a output like that.
|-- 20131201-192554
|   |-- HR
|   |   `-- user1
|   |       `-- 5.txt
|-- xerox
|   |-- HR
|   |   `-- user1
|   |       `-- 5.txt
|   |-- it
|   |   |-- user2
|   |   |   `-- 3.txt
|   |   `-- user3
|   |       |-- 1.txt
|   |       `-- 2.txt
|   `-- pa
|       `-- user4
|           `-- 4.txt
`-- rsync.out