On Thu, 8 Feb 2007 17:52:52 -0500 "Nelson Castillo" <nelsoneci@gmail.com> wrote: > > How to check whether hplip (or any other package) is installed on my > > system or not ? > > dpkg -l | grep packagename > > > The second question : how to investigate what packages are installed in my > > system, with all informations (package name, version etc...) > > dpkg -l :) dpkg -l hplip* . If you know the exact name of the package, dpkg -s hplip . Celejar