=====================
==  Ubuntu Development Tools  ==
=====================

check-symbols <package> [<directory>]
    ... will compare and give you a diff of the exported symbols of all .so 
    files in all binary packages of <package>. 
    <directory> is not mandatory and set to /var/cache/pbuilder/result by default.

what-patch
    ... will check what patching system is used by a package.
    You need to be in it's source directory in order that it works.