Problem using cat /dev/null

From: Myszkowski.Mark <Mark.Myszkowski_at_wepco.com>
Date: Wed, 07 Nov 2001 16:32:03 -0600

Hello,
I am trying to use
cat /dev/null > a.log
to reset a log file. Unfortunately, when I do this the log file returns to
it's original size the next time that the application writing to that log
makes an update. How can I reset a log that is being written to by a
program without stopping the program?
Thank you,

Mark Myszkowski
Received on Wed Nov 07 2001 - 22:33:01 NZDT