finding changes made to configurations

[Arnaud Soyez]

On Thu, 2011-03-03 at 20:35 +0530, Tapas Mishra wrote:
> Hi,
> I wanted to know if on a server 2-3 people have SSH access and one of
> the person does some changes and leaves the job.
> Is there any tracking tool which can track what things were installed or
> what changes were made by team individuals at a later date.
> 
> -- 
> http://mightydreams.blogspot.com
> 

This is a very vague question. 
If you are talking about system admins: you can use etckeeper to track
changes in /etc/ (system configuration files).