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  1. or download this
    > perl
use strict;
...
__END__
Hello world!
>
  2. or download this
    > perl
my $x=\*STDOUT;
$x->print("hu hu");                 
__END__
Can't locate object method "print" via package "IO::Handle" at - line 
+2.
  3. or download this
    > perl
open my $x, ">", "/tmp/tst";
...
print `cat /tmp/tst`;                      
__END__
Can't locate object method "print" via package "IO::Handle" at - line 
+2.