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  1. or download this
    use Storable;
    $S{scalar} = 5;
    ...
    Storable::store \%S, 'state.sav';
    
    %S = %{ Storable::retrieve('state.sav') };
    
  2. or download this
    $"=$,,$_=q>|\p4<6 8p<M/_|<('=>
    .q>.<4-KI<l|2$<6%s!<qn#F<>;$,
    .=pack'N*',"@{[unpack'C*',$_]
    }"for split/</;$_=$,,y[A-Z a-z]
             {}cd;print lc