title: using bash commands in jupyter notebook
body: <p>I never used bash with jupyter notebook. For some project, I need to use bash with python but it's giving me errors. I have installed bash kernel also.</p>
  
  <pre><code>PATH="/Downloads/dogscats/"
  !ls {PATH}
  </code></pre>
  
  <blockquote>
    <p>'ls' is not recognized as an internal or external command,
    operable program or batch file.</p>
  </blockquote>