Terminal command to list "Installed (local or obsolete)" packages?

[halogen2]

In Synaptic Package Manager, there is an option to list the packages that are "Installed (local or obsolete)". What is the terminal command to get this same list?

(I tried aptitude search '(?obsolete)' but it doesn't list the locally-installed packages for which an older version is available in the standard repositories.)

[TheFu]

$ sudo ubuntu-support-status ... something something something.

[halogen2]

Thanks TheFu!

This command comes close -

ubuntu-support-status --show-unsupported

It gives exactly the list of packages I want, but surrounded by a bunch of other info that I don't want. Looking at the ubuntu-support-status script shows how to write my own Python 3 script to print only the desired info, so I'll do that for now.

(And just to add, because Internet searching didn't find any documentation of the apt Python 3 module: said documentation can be installed by running sudo apt-get install python-apt-doc )

[halogen2]

Here's the Python 3 script I ended up with. I named it apt-locally-installed

#!/usr/bin/env python3

import apt

with apt.Cache() as cache:
  for pkg in cache:
    if pkg.is_installed and not(pkg.candidate and pkg.candidate.downloadable):
      print(pkg.name, pkg.installed.version, sep='\t')