This is the command debian-report that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
debian-report - report differences in packages referenced by two sources.list files.
debian-report <old sources.list> <new sources.list>
debian-report is given two Debain sources.list files as arguments and will find all the
packages referenced by the second which trump packages found in the first.
Use debian-report online using onworks.net services