TPM: Perl execution method question

[Sam Hart]

(I'm not sure if this list is used much for anything, there's no archive 
as far as I can tell, so excuse me asking this on this list if that's not 
what the list is for... also, I just subscribed, so I have no backhistory 
to reference ;-)

I am writing a script which will have a variety of calling methods 
dependant on its usage (as a mail wrapper, CGI script, and even from the 
command line) and I can't seem to find a way to tell the scripts execution 
method (without just checking for %ENV values that may or may not be 
portable).

Anyone know of a way to tell in Perl how a perl script was ran?

-- 
Sam Hart
University/Work addr. <hart at physics.arizona.edu>
Personal addr. <criswell at geekcomix.com>
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