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?