NOTE: I created 'interact' before I discovered Test::Continuous 'autoprove' (https://metacpan.org/module/autoprove). 'autoprove' is more complete, so I recommend using it for Perl development. There are still uses for 'interact' since it can be used for things other than Perl development. 'interact' watches for any changes in a directory and then runs a command (such as run your unit test suite) and outputs the results either to the terminal or to growl How to use: 1. install 'interact' somewhere in your path 2. run 'interact' before you start developing and it will do its magic 3. pass in options to 'interact' as you see fit