Building CLI Tools

A good CLI tool eliminates repetitive work with a single command. But a good tool isn’t just a script that works; the command names, help text, and error output are part of the experience too.

Commands Should Be Predictable

When a user sees commands like build, dev, format, check, they should be able to guess what’ll happen. Surprises are more tiring at the command line.

tool dev
tool build
tool check

Output Should Be Spare

CLI output should be neither too quiet nor unnecessarily noisy. Short on success, and a clear “what to do next” message on failure works well.

Conclusion

Building a CLI is small-scale product design. Even on the terminal, users want good names and clear feedback.