Replacing Characters in many files?

From: Mike Lutwick <mike_at_mars.novanet.ns.ca>
Date: Fri, 04 Feb 2000 18:37:00 -0400 (AST)

I have a directory full of a bunch of files. I find an occurance of lets
say 4427

grep 4427 *

Is there a way to change 4427 to lets say 333 without editing each file???

Thanks
Received on Fri Feb 04 2000 - 22:37:50 NZDT