$ perl -v | perl -lane 'print "@F[-2, -1]" if /Copyright/'
Larry Wall
you have mail in /var/mail/james
$ mail
Mail version 8.1.2 01/15/2001.  Type ? for help.
"/var/mail/james": 5469 messages 1266 new 5469 unread
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If that's true, this should help.

a first attempt; didn't make it all the way through

$ perl goedel.pl                                                  
Use of uninitialized value in say at goedel.pl line 7.

1


1
$
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#!/usr/bin/perl

use warnings;
use strict;
use v5.20;

say undef;
say !undef;
say !!undef;

say map { grep { // } @_ } (!undef)[!!undef];
{
    say 1;
}
exit $?;
# what is the exit status?
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