CLIs are ubiquitous – `git`, or `dotnet`, `az`, and so many more! Kathleen began the subtle redesign of the .NET CLI, led .NET’s CLI installation strategy `dotnet tool`, and was one of the driving forces behind the System.CommandLine NuGet library that Microsoft released in November. This talk starts with what CLI design elements and what makes a good CLI, along with a brief introduction to Posix. System.CommandLine will be used to implement the CLI, hopefully convincing you to find a library appropriate to your language to maintain consistent parsing across your ecosystem. You’ll leave ready to create a great CLI or update one you are already using.

This is a 60 -75 minute talk, although _either_ System.CommandLine or CLI design could be done in a shorter timeframe