Copy Protection and Licensing.
Ok, So I have a program made with Qt. The only installation it requires is to make sure Qt is installed(I'm on Ubuntu and Qt is in the dependencies).
So that leaves me with two questions:
What license do I want? I want something that I can sell, I don't want them to modify or distribute my program. I believe Commercial use(tell me if I'm wrong here) but I believe it means that a company can buy one program and distribute it throughout their whole company. I don't want them to be able to do that. I want it to be that they only can get it through the Ubuntu Software Center or my website.
How can I add copy protection to my application. I want it to verify the computer so that it only works with a computer that is assigned a serial number and only if that computer meets that serial number then they can use the program. How can I do that? I would like a free option here. Even if it is less secure.
None of these are really related to Qt.
The easiest would be to form your own license with the conditions you want. You can use a generic license generator like "this one":http://www.binpress.com/license/generator and adjust it to your needs.
As for protection I know a few tools for windows but I'm not that familiar with linux, sorry.