Best pattern (combination) for CLI + service singletons (Java FX)

I want to create a cli with JavaFx. The commands could something like:

• add foldername
• "+ foldername"
• delete foldername
• "- foldername"
• rename oldfoldername newfoldername etc.

so some commands have the same task. I operate on the file system, I want to use singleton objects. Is there a good pattern (combination) to interpret the commands with there different parameters and get a JavaFx service to do the work in a io-thread?

Factory pattern, command pattern and interpretor pattern alone are in my optinion not the best way to do the task and I don't get a good combination of these pattern.

I hope somebody can help me.

THX