TIL there are dozens of neat little command-line tools hidden away in the Python standard library, available to run on any machine that has a Python installation https://til.simonwillison.net/python/stdlib-cli-tools
CLI tools hidden in the Python standard library

Seth Michael Larson pointed out that the Python gzip module can be used as a CLI tool like this:

@simon json.tool will also exit with nonzero status if your json document is invalid.

We use it a lot as a quick easy to validate config files