How do I remove this duplicate sources.list entry?

Question

Sometimes, when I run

sudo apt-get update 

or install an app

sudo apt-get install

I get the error below at the bottom in the gnome-terminal and I can't remove it. I searched for it in the software-sources and in y-ppa-manager and I am not sure I want to mess with the sources list since I am a bit of a noob.

Duplicate sources.list entry http://archive.canonical.com/ubuntu/ oneiric/partner amd64 Packages \
  (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_oneiric_partner_binary-amd64_Packages)

Answer 1

Open the sources.list in gedit gksudo gedit /etc/apt/sources.list and look for the line"

deb http://archive.canonical.com/ubuntu oneiric partner

and comment it out by adding # before at the beginning of that line so

#deb http://archive.canonical.com/ubuntu oneiric partner

I know you said you didn't want to mess with the sources.list, but I believe this is the best way to do it. As long as you just comment it out instead of deleting it, you should be fine.