[ale] Using diff to see what changed

[JD]

>>
>> Sounds like a good way to find malware.... 
> 
> I'm actually just doing this out of interest.  I've played with this
> program that has an expiration (not registered, trialware).  I'm curious
> as how Windows programmers implement this feature in their code.  WINE
> should make it easy to figure out.  I can't find any real data in
> the .reg files.  I'm leaning on the proper method is to store this value
> in the .exe and update it as needed.
> 

Why not use a version control system like git, SVN, or BZR?  It would be
easy to see which files changed that way.