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  1. or download this
    $ perl -le'
    use warnings;
    ...
    "my" variable $Foo::bar can't be in a package at -e line 6, near "my $
    +Foo::bar "
    Execution of -e aborted due to compilation errors.
    
  2. or download this
    $ perl -le'
    use warnings;
    ...
    '
    Hello World