You might want to use File::Spec, which knows about special device files for different operating systems: 

    use File::Spec::Functions qw( devnull );
    open( OUT, ">".devnull() )  ||  die $!;

[download]
and someone needs to submit a patch to provide a devtty() function. (:

                - tye

In reply to Re: Reading from the keyboard in Win32 without using STDIN (File::Spec) by tye
in thread Reading from the keyboard in Win32 without using STDIN by amrangaye

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