title: Jupyter Notebool: Error in "Head" unix command in Jupyter Notebook
body: <p>While running unix command Head in Jupyter notebook,</p>
  
  <p>% head -n 3 $filename</p>
  
  <p>I am getting below error:
  ERROR:root:Line magic function %head not found.</p>
  
  <p><a href="https://i.stack.imgur.com/TUCJP.png" rel="nofollow noreferrer">JupyterNote Book Screen</a></p>