On Thu, 2013-08-15 at 09:17 -0300, David Roguin wrote:
> Is there a way to know which package installed X package or if X
> package was installed manually?
"whatdepends pkg(s)
Shows a listing of what depends on a package." -
http://linux.die.net/man/8/apt-cache
So you can't see what package exactly installed it, but at least all
packages who need it. It doesn't show if something you e.g. installed by
"make install" should need it too.