title: grep: how to show the next lines after the matched one until a blank line [not possible!]
body: <p>I have a dictionary (not python dict) consisting of many text files like this:</p>
  
  <pre><code>##Berlin                
  -capital of Germany         
  -3.5 million inhabitants
  
  ##Earth           
  -planet
  </code></pre>
  
  <p>How can I show one entry of the dictionary with the facts?</p>
  
  <p>Thank you!</p>