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From: ts@uwasa.fi (Timo Salmi)
Newsgroups: comp.lang.pascal
Subject: Re: Modifying the DOS environment with TP
Message-ID: <1991Jan28.094603.28740@uwasa.fi>
Date: 28 Jan 91 09:46:03 GMT
References: <43263@ut-emx.uucp>
Organization: University of Vaasa
Lines: 23

In article <43263@ut-emx.uucp> mjensen@ccwf.cc.utexas.edu (Marc S. Jensen) writes:
>I'm working on a DOS shell program, for no particular reason other than I
>want to, and have a problem: While I can use GetEnv, EnvCount, etc., to
>read the DOS environment variables, I can't find a way of changing those
>same variables.
>I thought I could get around this by using somoething like
>	
>	exec('COMMAND.COM','/C SET <VAR>=<VALUE>')
>
>but this won't work, I guess because the new values are zapped when the
>exec statement is done executing...
:

You are right.  This is not the solution.  You have to deal with the
PSP to change the environment, which is an advanced subject.  Some
Turbo Pascal books have material on this, perhaps Michael Tischer's
Turbo Pascal Internals?  Perhaps someone will have an exaple.

...................................................................
Prof. Timo Salmi        
Moderating at garbo.uwasa.fi anonymous ftp archives 128.214.12.37
School of Business Studies, University of Vaasa, SF-65101, Finland
Internet: ts@chyde.uwasa.fi Funet: gado::salmi Bitnet: salmi@finfun