I think it would be better to use the Ansible expect module:

ansible.builtin.expect module

Documentation is here:
https://docs.ansible.com/ansible/latest/collections/ansible/builtin/expe...

Thanks for your advice.

I'll check out if I can get the source for the INT program

Thanks for everyone's suggestions.

Using the OS to pipe in the input from a file is a bit cumbersome and inflexible.