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 its own children created after the change. There is shell magic that may allow you to fake it by evaling the script's output in your shell; check out the comp.unix.questions FAQ for details.

VMS

Change to %ENV persist after Perl exits, but directory changes do not.

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