Linux - Close any client's open file

From: Shaun (sonny418_at_netzero.com)
Date: 03/05/04 

Date: 5 Mar 2004 10:34:53 -0800

Hi Linux World,

  What I would like to do is to close out any client's open file
before server go down. So does any one know how to close client's open
file from server side? I would appriciate any help from anyone out
there.