perldoc perlvar, look for %ENV. What you're trying (unsuccessfuly) to do is starting a new shell, setting a variable, and then that shell exits. This leaves your environment unchanged. Not to mention the fact that system() usually runs /bin/sh instead of csh.

perldoc -q environment may also be tangentally of interest.

In reply to Re: Setting TERMINAL_EMULATOR to vt100 by Fletch
in thread Setting TERMINAL_EMULATOR to vt100 by zuinc

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