[BBLISA] List packages that are not dependencies

[Alex Aminoff]

This is surprisingly more difficult than I expected.

Is there a simple way to ask a package management system (rpm, yum, or 
apt) to list those packages which are not themselves dependencies for 
any other package?

I could ask for the dependencies of each package and then write perl 
code to figure it out, but I don't think I should have to.

  - Alex Aminoff
    BaseSpace.net