I need to use jack to generate monitoring from my microphone to headphones and control the volume of the voice. I have a macbook pro and installed the jack package and it works fine with qjackctl on my mac. But I would like to be able to do the same without using qjackctl, as the idea later on is to create a UI with the minimum controls needed to connect the microphone to the headphones and control the volume. According to ChatGPT, to start the server I should use the jack_control start command, however this command is not available on the command line. I installed jack with the package I downloaded from the official site. I can't find any documentation about the commands I need to manage jack. I would appreciate it if someone can give me indications on how I can learn to use jack from the command line.