which perl [am I using?]

[John Horner]

I'm a little unclear about which version of Perl I have, and/or which 
version of Perl is executed when I run scripts.

If I do
  perl -v
I get the answer
  This is perl, v5.8.0 built for darwin
but I just looked into the /System/Library/Perl folder and there's a 
"5.8.1" folder full of what looks like all the right stuff. If I have 
both 5.8.0 and 5.8.1 what do I do to invoke the newer version when I 
type "perl [scriptname]"?

Also, where are the modules supposed to be and where does Apple think 
they should be? -- If I do

  perl -Mnotamodule
I get
Can't locate notamodule.pm in @INC (@INC contains: 
/Library/Perl/darwin /Library/Perl /Library/Perl/darwin /Library/Perl 
/Library/Perl /Network/Library/Perl/darwin /Network/Library/Perl 
/Network/Library/Perl .).

so those are presumably the default locations, but does CPAN have the 
same defaults? I sometimes get conflicting results where the 
command-line CPAN tool tells me

  [modulename] is up to date
but a script will say it can't find it.
I realise this is a lot to ask in one go...
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               "Have You Validated Your Code?"
John Horner                            (+612 / 02) 9333 2110
Senior Developer, ABC Online          http://www.abc.net.au/
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