Le 09.10.2013 19:49, Richard Owlett a écrit :
If I can correctly read and follow instructions (friends and family tend to doubt), the above tells me too much about what is already installed and not enough about what is not installed :(
Hehe, I can understand your friends, or maybe I was not clear enough. ;)
You can select installed package, or not: aptitude shows all packages you could install, not only the ones you have actually installed. Plus, there are here another informations that I did not spoke about: it will show you the current state of the package, aka: installed, automatically installed, removed or absent from the system ( it means never installed or purged ). Those informations are shown with the characters before the package full name ( name + version ). "i" means installed, "iA" means automatically installed, "p" is for absent from the system, and "c" is for removed ( some configuration are still system-wide installed ). Oh, and, "B" means there is a broken dependency, but you will guess that with the red color more than with the letter I think. Those characters also indicate the actions aptitude will do, but I think you will understand that quickly when you will have played a little with that tool.