How To Quickly Remove Obsolete PPAs In Ubuntu/Linux Mint

List available third party PPAs
When installing third party applications in Ubuntu / Linux Mint, one needs to specifically first add the PPAs (Personal Packaging Archives) and then install the related required applications.surgeprice.display("ihaveapc.com_336x280_abovepost");Now over a course of time, it may happen that these added PPAs may become obsolete or are simply no longer existent. This will cause errors when...