Jenkins community has provided the offical jenkins-cli.jar but it is not very intuitive to use. So I just create a tiny wrapper for it to make it less noisy by dowlonading the jar packages and injecting user credential automatically. Thanks to the google fire library creating a command line tools nowadays is incredibly simple.
It turns your function or class into command line with one line of code. It's based on runtime type inspection so you don't even need to use decorator which most of the command line framework does (click for example).
