I have ubuntu 12.04 lts and i need the correct output because i edited it because it wasn't working but it has only made it worse thank you for your help
Here is a simple example of a typical /etc/apt/sources.list file for Ubuntu 12.04. The easiest way to edit the sources.list file is from the terminal in nano editor using the following command:
The instructions for using nano are always displayed at the bottom of the page. Use the keyboard combination Ctrl + O and after that press Enter to save the file to its current location. Use the keyboard combination Ctrl + X to exit nano.