Tip of the day: validating a Jenkinsfile from the CLI with HTTPie
An easily missed feature in Jenkins is the bundled linter for Jenkinsfiles.
While there are many examples about how to use it with cURL, I could not find any using HTTPie, which I find much more convenient in general than cURL. So, after some fumbling due to the little documented expectations of the validator, here is the solution showing how to validate a Jenkinsfile from the CLI: