From: dkmd_nielsen <donn@...>
Date: 2008-11-13T05:52:18+09:00
Subject: Need tutoring on using a path environment variable

I don't know what to do.  I have an environment variable, PW_PATH,
that contains the folder names where applications can be executed
from.  I want to start a particular application that is in one of
those folders.  I currently use the following:

      system("presort /a /nos /watch #{template[0]}")	# submit the
presort to run

This works when the contents of PW_PATH are added to the PATH
variable.  But I would like to avoid that if I can.  I guess my
questions are:  How do I first acquire the contents of PW_PATH?  How
do employ the contents as a temporary addition to PATH so that system
can submit the application and it will be found and executed?

Suggestions?  Comments?  Observations?  All are appreciated.

dvn