[lubuntu-users] how to run the pkg updater from cmd line

[Harry Putnam]

Lubuntu-17.10
lxde desktop

How does one run the gui updater that pops up on the desktop showing
available updates, from the command line.

If I ssh into the box how can I run that tool.  What is it called?

I would normally run `aptitude full-upgrade' but having done that I
see the updater does not agree and that there are still updates
available