in reply to Re^4: Environment Variables in YAML
in thread Environment Variables in YAML

Here is a general article on Template philosophy, and why it is a good idea. It includes recommendations on modules:

Choosing a Templating System

For your case, where usage seems fairly simple, I'd suggest starting with:
Text::Template .

        “The sources of quotes found on the internet are not always reliable.” — Abraham Lincoln.3; cf.

In Section Seekers of Perl Wisdom