dir=fedora #{the name of the folder}
size=121 #{the number of images} 
duartion=120.0 #{the duration of the wallpaper in secounds}
transition=5.0 #{the duration of the transition in secounds}

count=1
count2=2
echo "<background>
<starttime>
	<year>2009</year>
	<month>08</month>
	<day>04</day>
	<hour>00</hour>
	<minute>00</minute>
	<second>00</second>
</starttime>
<!-- This animation will start at midnight. -->">$dir.xml
while [ $count -le $size ]
do
echo "<static>
	<duration>$duartion</duration>
	<file>/usr/share/backgrounds/$dir/$count.jpg</file>
</static>
<transition>
	<duration>$transition</duration>
	<from>/usr/share/backgrounds/$dir/$count.jpg</from>
	<to>/usr/share/backgrounds/$dir/$count2.jpg</to>
</transition>" >> $dir.xml
let count=count+1
let count2=count2+1
done

echo "</background>">>$dir.xml