The easiest way to remove ppa repos from ubuntu

ls /etc/apt/sources.list.d


marek@lati:/etc/apt/sources.list.d$ ll
razem 20
drwxr-xr-x 2 root root 4096 maj  7 10:37 ./
drwxr-xr-x 6 root root 4096 maj  6 11:06 ../
-rw-r--r-- 1 root root  142 maj  7 10:37 mc3man-trusty-media-trusty.list
-rw-r--r-- 1 root root  142 maj  7 10:37 mc3man-trusty-media-trusty.list.save
-rw-r--r-- 1 root root  142 maj  7 10:37 ubuntu-on-rails-ppa-trusty.list



sudo rm -i /etc/apt/sources.list.d/ubuntu-on-rails-ppa-trusty.list