Learned how to use the linux and macOS command line. Along with how to configure, troubleshoot, maintain, and automate using the  bash shell. Truth be told, I have always wanted to know how to use the command line better, as I am an unabashed macOS aficionado. This class gave me the opportunity to learn what all the most common commands were. Which quite frankly, was awesome. Imagine a kid in a candy store, trying all the candies, except now it was a grown adult trying all the commands.