Your newline never reaches the external command, because IN isn't connected to anything. (I believe that if you had used use warnings, it would have warned you about the symbol IN only being used once).

BTW normally you'd use expect for this kind of automation process.

In reply to Re: Trying to pass a "press any key" program in terminal. by moritz
in thread Trying to pass a "press any key" program in terminal. by joschka

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