Getting a unique id from a unix-like system

Question

I want to get from any Unix-like system (if this is possible) a unique id that will be persistent every time my application runs in the same machine. If it is possible, I wa

Answer 1

You mentioned that on Windows you use some GUID... Do you have some details about how it is created?

Apart from that, you could try something like CPU ID, or hard disk ID... I suppose those cannot be changed (but you will run into trouble if a faulty hard disk is replaced).