title: How to write and execute PURE machine code manually without containers like EXE or ELF?
body: <p>I just need a hello world demo to see how machine code actually works.</p>
  
  <p>Though windows' <strong>EXE</strong> and linux' <strong>ELF</strong> is near machine code,but it's not <strong>PURE</strong></p>
  
  <p>How can I write/execute <strong>PURE</strong> machine code?</p>