🚀 go-pugleaf

In article <33EA8504.49DA453@comtech.com.au> Grant Slender <grants@comtech.com.au> writes:
>From: Grant Slender <grants@comtech.com.au>
>Subject: How do I change an enviroment var?
>Date: Fri, 08 Aug 1997 12:31:32 +1000

>I need to get the list of current environment variables in a Dos based C
>program....I can do that using the "main( " argument lists....

>But how do I write a changed value back???

>Thanks for any tips

Since the running program inherits a duplicate set of the variables,
any changes get lost when the program exits back to DOS.

I got around that years ago with a very bad hack - my only excuse
is that it was a one-time program.

In the program I created and opened a file named $$!$$!$$.BAT,
and wrote a batch file into it.  It was two lines:

@SET VARAIBLE=FOO               <<-- make this line what you wnat to do.
@DEL $$!$$!$$.BAT               <<-- then delete the file that did it.

Before I exited my program, I poked the batch file name into the 
keyboard buffer. It worked.

There are better ways to do this but, but as I said, 
this was a quick one-time hack for a single-user system 
that I knew quite well.

Hoe that this stimulates the brain into thinking about alternative 
methods.


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Mike Morris	ham radio: WA6ILQ     ICBM: 34:07:54.9 by 118:03:46.2
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