Adding repository error

Question

I'm trying to add a repository on my VPS with Ubuntu 12.04 installed using this command :

sudo add-apt-repository ppa:chris-lea/node.js

But terminal is showing

command not found

Then I've entered the following command to solve the problem

sudo apt-get install software-proprieties-common

But unfortunately I'm getting the following error :

E: Unable to locate package software-proprieties-common

How can I solve this problems?

Update

Now software-properties-common installed, but same problem continues. Please check the screen shot.

Update 2

Problem continues

Solution

Try this,

sudo apt-get update
sudo apt-get install software-properties-common
sudo apt-get install python-software-properties

then

sudo add-apt-repository ppa:chris-lea/node.js

Comments

[Max Ricketts]

Please check that, I've already entered "sudo apt-get install software-properties-common", but it's showing "Unable to loate package software-properties-common". :(

[Avinash Raj]

pleasecheck your command,it is not software-proprieties-common it is software-properties-common

[Avinash Raj]

try without sudo.

[Max Ricketts]

Unfortunately, problem continues. Please check update.

[Avinash Raj]

it is python-software-properties not python-properties-common.

[Enno]

I have the same issue, and neither package is available. In fact, apt-cache search properties comes up entirely empty. Have I somehow hosed my system in some way? I am also missing some other packages, which makes me feel like apt is just very confused.