title: I want to execute multiple linux command lines in one .txt file(as parallel). I am using GNU parallel
body: <p>I have a problem with reading multiple lines of Linux commands in one .txt file.
  And I want to use GNU parallel.</p>
  <p>When I read the tutorial... I couldn't understand it properly.</p>
  <p>I have one .txt file. and it has multiple command lines like this.</p>
  <p><a href="https://i.stack.imgur.com/hMXpT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hMXpT.png" alt="enter image description here" /></a></p>
  <p>The only help I could get from the official tutorial was reading multiple .txt files.</p>
  <p>How can I solve this?</p>