Sure: Plain java builds the tool (the jar file), but a real CLI (./tool --some_args) is even nice than invoking a JAR using (java --jar --classpath) etc

Airline is damn simple for CLI based things:
https://github.com/matzew/simplepush-cli/blob/master/src/main/java/net/wessendorf/simplepush/cli/SendCommand.java

Once the JAR is there - I can take a look at the Airline/CLI bits for this

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