Use this.
That will list every package installed. Dump that to a text file with this.
Code:
dpkg -l > ~/packageList.txt
When installing on a new system copy the entire "packageList.txt" file to the clipboard and then do this.
Code:
sudo aptitude install ***PASTE LIST OF PACKAGES HERE***
Any packages already installed will be ignored, anything not part of the default install will be installed at this point. If you want use cron to schedule an automatic backup of the package list so its always up to date. Cheers!
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