🐧 Hi everyone. I'm writing a JACK client. Is there a way to connect ins and outs in the shell i.e. without patchage, qjackctl GUIs etc?

I want it to run on a Raspberry Pi so I'm squeezing as much performance as I can out of it for the sake of the audio thread. Turned off services, no desktop GUI, ASCII art in the console, bitmapped font, no Unicode etc, etc. I can start jackd from command line but I can't find a way to route the audio without a GUI. Is there a shell command for doing this somehow or should I be doing this in the application? Shell would be less hassle if possible.