title: Why do you need to put #!/bin/bash at the beginning of a script file?
body: <p>I have made <a href="http://en.wikipedia.org/wiki/Bash_%28Unix_shell%29" rel="noreferrer">Bash</a> scripts before and they all ran fine without <code>#!/bin/bash</code> at the beginning.</p>
  
  <p>What's the point of putting it in? Would things be any different?</p>
  
  <p>Also, how do you pronounce <code>#</code>? I know that <code>!</code> is pronounced as "bang."</p>
  
  <p>How is <code>#!</code> pronounced?</p>