On Wed, Jan 15, 2003 at 11:36:29AM -0500, [EMAIL PROTECTED] wrote:
> I want to write a perl script to
> replace a Unix shell script which
> does nothing other than create
> and set environment variables.
>
> So the perl script might look something like this:
>
> $ENV{GREGSVAR}='Hello';
>
> except that when I run the script, the
> assignment doesn't seem to stick, and
> the environment variable GREGSVAR doesn't
> exist after the perl script is finished
> executing.
>
> looking up environment variables in the
> perl bible and the perl cookbook didn't
> show anything about sticky environment variables.
>
> can this be done in perl?
Check the FAQ (perldoc -q environment):
I {changed directory, modified my environment} in a perl
script. How come the change disappeared when I exited the
script? How do I get my changes to be visible?
Unix
In the strictest sense, it can't be done--the
script executes as a different process from
the shell it was started from. Changes to a
process are not reflected in its parent--only
in any children created after the change.
There is shell magic that may allow you to
fake it by eval()ing the script's output in
your shell; check out the comp.unix.questions
FAQ for details.
Ronald
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