Ubuntu Source List Generator

So you have messed too much with 3rd party PPAs & now you want to get your "old" repos back then check this website : #-Link-Snipped-#

This website will allow you to create the new source list.After filling up desired choices click on "generate" in end of page & new page will generate something like :



Now open terminal & type :

 gksudo gedit /etc/apt/sources.list 

& then copy-paste the generated source list from website & hit on "save".
Now type in terminal :

 sudo apt-get update 

👍