As developers, chances are we are in the terminal often. Command Line Interfaces (CLI), are very helpful in streamlining our work. Ruby is a very powerful language and can make some powerful CLIs. Thor is a powerful option, but in this episode, we look at some alternatives from basic to more advanced scenarios.

Let's face it, Ruby is slow , but don't abandon Ruby just yet. Using extensions, we can write performant code in another language for the specific slow functions while the rest of the application remains untouched.

It's easy to accidentally write slow code in our applications. In this episode, we look at how we can benchmark our code and examples of some methods which are slower than others.

We may come across a need to run shell commands and Ruby has some built in methods which appear safe, but can introduce major security risks.

Slack is a great application to keep in contact with friends, coworkers and a community. With bots, its capabilities are endless. In this episode, learn how to create a Slack Bot to interact with.