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You can store list of installed software to a file called /backup/installed-software.log, enter:
$ dpkg --get-selections > /backup/installed-software.log
Under a Debian/Ubuntu Linux type the following two commands to reinstall all the programs:
# dpkg --set-selections < /backup/installed-software.log
Once list is imported, use the dselect command or other tools to install the packages, enter:
# dselect
Select 'i' for install the software. OR use the following command:
# apt-get dselect-upgrade
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