Blender update sudo commands

I have Blender 2.70 but it is not installed. I am new to Linux and I am LOVING it, the one thing I mis from Windows is the installing system. I installed 2.69 from the Ubuntu software center and I would like to have 2.70 installed, not just run it from a file. do you know any sudo commands or any other way I can install 2.70.
thank you,

If I understand your question correctly, all you should have to do is google-it. I just did myself and the entire first page was covered with helpful websites.

Yes, I should have just googled it. I found this AMAZING article on how to update Blender from the terminal.
Check it out: