I just updated to Ubuntu 11.10 and had some massive issues with Ubuntu running Thunderbird. Since Unity, the new UI software never really worked all that well, I decided it was time to wipe my settings. Now that I’ve moved all the files in my home direcotry to another directory I can’t log in. Moving them back didnt help. In other words, I’m screwed. I’d like to export all the packages I have, reformat, and reinstall those packages. Seems simple enough and Ubuntu has great tools to do so.
To export all your packages run the following command:
dpkg --get-selections | grep -v deinstall > ubuntu-packages
This will export all installed packages to a file called, ubuntu-packages. To reinstall the packages simple run these commands
sudo apt-get update
sudo apt-get dist-upgrade
dpkg --set-selections < ubuntu-packages
This will open up a dselect session. Type ‘I‘ and allow dselect to install of the the packages listed in your ubuntu-files document. When it’s finished, type ‘Q‘ and hit the ENTER key to exit dselect. Once you exit dselect, you are done!