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I'm trying to automate the creation of an encrypted sparsebundle and configure backup for a 10.7 machine using a TimeCapsule. I've created the script below

http://pastebin.com/D2nQk1j1

#!/bin/bash
read -p "This should create an encypted sparse bundle and save it to the timecapsule share. It should then configure your Timecapsule with the appropriate settings. Before you begin browse to your timecapsule/backup device and if requested save the password to the keychain." -n 1 -r
if [[ $REPLY =~ ^[Yy]$ ]]
then
clear
echo -e "\n\n\n\nWhat is the name of your Time Capsule or Device you are backing up to ?"
read CAPSULE
echo -e "\n\n\nI will use /Volumes/$CAPSULE\n\n\n"
#clear
echo -e "\n\n\nWhat is the Username for the device? \n\n\n"
read USERNAME
#clear
#echo -e "\n\n\nWhat is the PASSWORD for the device? \n\n\n"
#read PASSWORD
echo -e "\n\n\nLets get going .....\n\n\n"
NAME=$(system_profiler | sed -ne 's/.*Computer Name://p' | sed 's/^[ \t]*//')
SERIAL=$(system_profiler | sed -ne 's/Serial Number (system)://p' | sed 's/^[ \t]*//')
DISK=$(df -lh |grep /dev/disk | awk '{ print $2*1.5}')
#Serial number for the salt and then hash the NAME
PASSWORD=$(echo "$SERIAL":"$NAME" | openssl sha1)
#Find the primary disk size then create the sparesebundle 1.5 times larger.
#clear
echo -e "\n\n\n\nAbout to begin creating and encrypting the sparsebundle.\n\n\n"
printf $PASSWORD | hdiutil create -encryption AES-128 -stdinpass -size "$DISK"g -volname "bob" "/Volumes/$CAPSULE/$NAME.sparsebundle" -fs HFS+J -type SPARSEBUNDLE
#clear
#echo -e "\n\n\nAbout to mount the sparsebundle.\n\n\n\n"
#printf $PASSWORD |hdiutil attach -encryption AES-128 -stdinpass -mountpoint #"/Volumes/Loosing_it" "/Volumes/$CAPSULE/$NAME.sparsebundle"
#Turn on Timemachine
echo -e "\n\n\nAbout to enable Time Machine. If prompted for a password put in your user password.\n\n\n"
sudo /usr/bin/tmutil enable
sleep 5
#echo -e "\n\n\nAbout to enable Local Snapshots.\n\n\n"
#Enable local snapshots
sudo /usr/bin/tmutil disablelocal
sleep 15
#Set the destination to wherever
echo -e "\n\n\nAbout to configure the backup destination.\n\n\n"
sudo /usr/bin/tmutil setdestination -p "afp://$USERNAME@$CAPSULE._afpovertcp._tcp.local/$CAPSULE/$NAME.sparsebundle"
sudo /usr/bin/tmutil snapshot "/Volumes/bob"
sleep 5
#Make sure only backups if plugged in.
sudo /usr/bin/defaults write /Library/Preferences/com.apple.TimeMachine RequiresACPower 0
#Start backup
echo -e "\n\n\nAbout to run the first backup.\n\n\nThis will most likely take\n\n\na few hours\n\n\n"
sudo /usr/bin/tmutil startbackup > /dev/null
echo -e "This is your password.\n\n\n$PASSWORD\n\n\nThis is the password that was used to setup your encryption. You will now need to enter it into your keychain so backups can be encrypted.\n\n\n\n" > ~/Desktop/"$NAME"_Password.txt
echo -e "\n\n\nThis is your password.\n\n\n"$(tput setaf 1)$PASSWORD$(tput sgr0)"\n\n\nThis is the password that was used to setup your encryption. You will now need to enter it into your keychain so backups can be encrypted.\n\n\n\nSave the "$NAME"_Password.txt file somewhere safe in case you need it."
fi

The script creates the sparsebundle to the share. It encrypts it. I'm able to restore from "Enter Timemachine" (On the right hand side my recovery points are pink, I think that is remote backups?), the available space on the share gets smaller i.e. data is being saved there.

However if I double click on the sparsebundle the disk that mounts is empty? If I try and restore from the recovery partition I'm prompted to put in my encrypted password but again there's no backups?

What have I done wrong?

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