Assuming you are on some UNIX like system. You don't really need any CPAN modules. You can do everything "the hard way". Create 2 pipes, do fork, reopen
STDOUT and STDIN of the child into appropriate pipe ends, then execute your program. Now the parent will see
both STDOUT and STDIN of your program. Of course, you have to make sure, that the program does not buffer its
responses, so that perl script can see them. And make sure the perl script also avoids buffering.
Read 'perldoc perlipc' to find details and easier alternatives.
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