Have a limitation of only 11parts, what if I got 30 parts to upload ?

What the need of creating another script (up.sh) and putting all the command into it to execute ?

I think you have missed the part for deleting the files

PHP Code: 
rm <files> 
Nice start


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you may also add the following in one script if you want
1. megaupload
http://www.besthostingforums.com/showthread.php?t=37407
2.rapidshare
http://www.besthostingforums.com/showthread.php?t=21765