How to obtain a list of installed packages based on a backup?

Posted by ujjain on Ask Ubuntu See other posts from Ask Ubuntu or by ujjain
Published on 2012-11-10T16:31:29Z Indexed on 2012/11/10 17:17 UTC
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Filed under:

apt

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package-management

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packages

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backup

I have made a backup of my entire computer and I reinstalled the OS right now. I know I should have listed dpkg -l to obtain a list of packages, but I have not done so. I only made a tarball of the entire disk.

I wonder how I can find a list of packages based on this data. I would like to have the same packages installed that I had on my previous set-up. But there seems no longer a way to gain a list of packages, since I already reinstalled Ubuntu on the computer and only have the tarball back-up.

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