Quickly reinstall your favourite applications in Ubuntu

Quickly reinstall your favourite applications in Ubuntu: "

So you want to wipe your hard drive clean and reinstall a fresh Ubuntu copy. Before you do that, it might be wise to make a list of currently installed packages and reinstall them in a jiffy afterwards on the new OS:

sudo dpkg --get-selections > package_list.txt

Save the text file on a thumb drive, format the drive, reinstall Ubuntu, then to a

sudo dpkg --set-selections < package_list.txt
sudo apt-get -y update
sudo apt-get dselect-upgrade

Source

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