[ale] Using diff to see what changed

[cfowler at outpostsentinel.com (Chris Fowler)]

On Fri, 2011-05-13 at 18:12 -0400, Jim Kinney wrote:
> I've seen that before. during the install, ether the start date or the
> end date is embedded into the exe. It checks every time it's run after
> that point. You can test for that by resetting the system date past
> the end date and disconnect all networking. 

When I was doing Throughbred Basic installs I think they used inode
numbers.  This was in SCO, AIX, etc.  If we copied the binary we would
have to register it.  Restore from tape after a crash required
registration.