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  1. or download this
    my $ref2;
    { # Block A
    ...
    print "@$ref\n";
    print ref($ref), "  $ref\n";
    print ref($ref2),"  $ref2\n";
    
  2. or download this
     use Devel::Pointer;
    
    ...
     $real_ref = deref($addr);
    
     # $real_ref must now point to the @aha array..
    
  3. or download this
    $"=q;grep;;$,=q"grep";for(`find . -name ".saves*~"`){s;$/;;;/(.*-(\d+)
    +-.*)$/;
    $_=["ps -e -o pid | "," $2 | "," -v "," "];`@$_`?{print"+ $1"}:{print"
    +- $1"}&&`rm $1`;
    print$\;}