creating a file inside /etc/apt/sources.list.d/

Question

I am trying to install chef (from opscode) on ubuntu box. I am not much familiar with linux but I have to install chef on linux in quick time.

One of the steps installation guide says

Create /etc/apt/sources.list.d/opscode.list

What does this line mean? Now should I create a directory opscode.list or file?

/etc/apt/sources.list.d/ directory already exists.

When I try to fire following command ->

cd /etc/apt/sources.list.d/
mkdir opscode.list

I get following ->

mkdir: cannot create directory `opscode.list': Permission denied

How can I resolve the permission denied issue?

Solution

use sudo:

sudo vi /etc/apt/sources.list.d/opscode.list

or maybe via echo:

sudo echo "deb http://apt.opscode.com/ <codename> main" > /etc/apt/sources.list.d/opscode.list

When asked for a password, type in YOUR password (not the one from root).

Replace "<codename>" with whatever is needed (according to the tutorial):

• For Chef 0.9.x, replace codename with the supported distribution codename, such as "lucid".
• For Chef 0.10.x, replace codename with the codename, suffixed with "-0.10", for example, "lucid-0.10".