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I suppose you could build a list of all packages that would be installed if you started with an empty apt database and installed everything that deborphan -a currently tells you. Then compare that with what's currently installed.

The difference would be packages that cannot be retrieved automatically with the current list of repositories.

I've no idea where to start with that though.

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Possible duplicate:… – chronitis Nov 14 '12 at 10:37

1 Answer 1

To get a list of apps that are not in a Registered Repository or PPA do this:

sudo apt-get install apt-show-versions
apt-show-versions | grep 'No available version'

That should output text like this:

app1 installed: No available version in archive
app23 0.3.6 installed: No available version in archive
app332 7.0.9377 installed: No available version in archive

For me this worked and showed three apps I installed using DEB packages and weren't available in a Repo or PPA.

Do remember though that it's impossible to check for all programs, only the ones that went through dpkg. For instance, some apps are installed by simply extracting them into the correct folders, or others use a standalone installer bin or script. So the best way is for you yourself to keep a list of apps you installed via any method other than APT.

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Works for all my local dpkg installed packages. One exception. It lists skype-bin, whereas apt-cache policy skype-bin clearly shows the Canonical partner repo. I'm not sure what is going on. Multiarch issue? Still +1 for apt-show-versions! – gertvdijk Jan 5 '13 at 21:37
aptitude calls these 'obsolete' packages. See chronitis comment above. – Henk Poley Mar 5 '13 at 16:54

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