Is it possible to pass a command to a Linux based OS? So for instance I select Ubuntu or Fedora and I tell it to run some script as soon as it boots and I can put this comand in the menuentry. My second question is that is it possible to control navigation within GRUB using a joystick? I know it's possible to treat a joystick as a keyboard in several OSes, but at the boot menu I don't if it's possible for that to happen.
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