Debian: deb command not found. How can i fix it?

Question

I am trying to install graphics card Nvidia Geforce 660 on my desktop. Os: debian 8.

Here is the wiki which gives guidelines : https://wiki.debian.org/NvidiaGraphicsDrivers#jessie-304xx

But as soon as I am on the first step:

deb http://http.debian.net/debian/ jessie main contrib non-free

bash: deb: command not found

How can I install deb?

Answer 1

The instruction is

Add "contrib" and "non-free" components to /etc/apt/sources.list, for example

I.e., you're supposed to add that line to the given file with a text editor. You are not supposed to execute it on a command line.

You can also install the software-properties-common package:

sudo apt-get install software-properties-common

Afterwhich you can run the command below:

sudo add-apt-repository "deb http://http.debian.net/debian/ jessie main contrib non-free"

You can confirm that the repository was added to the list of repositories using this command:

sudo nano /etc/apt/sources.list

That's all.

I hope this helps