On Sun, Oct 23, 2016 at 08:48:46PM -0400, kamaraju kusumanchi wrote: > How can I list all the packages installed on my system that are > currently part of the stable distribution but not present in either > testing or sid? This is a good question (sorry I don't have the answer here). I recently hit a similar situation with mediawiki, which exists in everything except stable. I realised that if you have upgraded between Debian versions at some point, you might have some packages installed from the former release (now oldstable) that are not in current release, and so you might not get security updates for those packages (once security updates cease for oldstable). In the case of mediawiki there is a version in jessie-backports, but default pining rules / apt preferences would not upgrade the package automatically in this situation.
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