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  1. or download this
    my ($digits) = ($name =~ m/$re/);
    
  2. or download this
      my ($digits) = $name =~ /$re/;
    
  3. or download this
      my $re = join( '\.' , @re );
      $re = qr/^ $re $/x;
      my $name = shift @ARGV;
      #my ($digits) = $name =~ /$re/;
      my ($digits) = ($name =~ /$re/);