Util that tracks past changes to et4 filesystem?

[Phil Savoie]

Hi All,

I am interested in finding out if there is a "history" of filesystem 
changes that is tracked on a RH system.  Basically, I want to find out 
who or what did something to a file to change it in any way, shape or form.

Example I have filex.  filex has a certain content now.  Now+5 file has 
been changed.  Is there a util to detect this change, i.e., who or what 
changed it?

Thanks in advance,

Phil