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  1. or download this
    D:\>perl -wE "binmode STDOUT, 'utf8'; use open IO => 'raw'"
D:\>perl -wE "say for PerlIO::get_layers(STDOUT)"
...
D:\>perl -MPerlIO -wE "use open 'std';"
Unknown PerlIO layer class 'std' (need IN, OUT or IO) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
  2. or download this
    D:\>perl -wE "use open ':std' => 'utf8';"