title: Use /bin/bash for %x in Ruby
body: <pre><code>%x{ echo hi } 
  </code></pre>
  
  <p>seems to fork off <code>/bin/sh</code>. I'd prefer <code>/bin/bash</code>. Is there a way to set that? The best thing I can think of is </p>
  
  <pre><code>%x {/bin/bash -c 'echo hi'}
  </code></pre>
  
  <p>but that doesn't to report output back like it should. Also, it's a general thing: I just never want <code>/bin/sh</code>, I <em>always</em> want <code>/bin/bash</code></p>