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  1. or download this
    use strict;use warnings;close STDERR&&open STDERR,">",\$_;
    if($-=(map{++$|,warn$!?$!|=$_:$!=$_,$/}66,55,25,67)?$|:$()
    {@_=map{substr($_,++$-,++$|)}split$/;print((($^O=~/win/i)?
               join(undef,@_)^'!/ ?':@_)=>"\!",$/)}
    
  2. or download this
    use strict;use warnings;
    {close STDERR&&open STDERR,'>',\$_}
    print,print[split/\0/,uc^'?25HnL ']->[$|]