This is hard, right ? Just checkout this cool application APTonCD.
What is APTonCD
APTonCD is a simple Graphical Interface tool which enables you to create DVDs or CDs with all the packages you have downloaded using apt-get or Aptitude.It can also be used to create disks with all your pakages located in a specific repository. You don't need internet connection anymore when you have to re-install everything.
- Backup - Backup all the packages downloaded via aptitude, apt-get and synaptic.
- Transport - You can carry all your favorite packages with you and install them anytime anywhere without worrying about an internet connection.
- Download - You can downlaod and Backup an entire repository or a specific section to a CD or DVD.
- Share - Share your favorite applications and packages with your friends.
Official site of APTonCD is http://aptoncd.sourceforge.net/
You can obtain your copy of APTonCD from the download page.