Now, I want to retire the squeeze mirror. But before I do that I'd like to find all the packages installed on my machine from this mirror. Then I can decide whether I want to upgrade or delete or keep then as-is. Is there a way to find that out?
Also, in the KDE panel, I get a notification such as
You should update your system.
There are 1,612 updates,
and 7 security updates.
In this case, I just want to perform the 7 security updates but do not want to update all the 1612 updates. Is there any way to pick and choose?
I guess one way to comment out the non-security mirrors in the sources.list and do upgrade. But I am wondering if there is a better approach?