System Restore

[Eric S. Johansson]

Matthew S-H wrote:
> 
> Easy solution.
> 1.    Create sym-links in /etc to files in /site-etc.
> 2.    Make /site-etc only accessible by root.
> 3.    Then, whenever you want to create a "site-specific" file, just 
> delete the sym-link in /etc and make a new file!!

unfortunately, it does not match the semantics of what I'm proposing. 
It also adds a significant amount of overhead and is more likely than 
not for the wrong thing to happen down the right thing.  The 
multilayered filesystem can be set up to make it easy to recover from 
the wrong behavior (near) automatically