You are looking at a very old, but free version of the course.
If you are interesed the most recent version, check it out
on the Perl Maven site.
Write out the expected STDIN to a file called "in"
Run the app system "$app < in >out 2>err";
read in the out and err files an examine them
If you are interested in on-site trainings by the author, please
contact me directly.