title: Eliminate characters before a pattern in R
body: <p>If I have the following dataframe:</p>
  
  <pre><code>Fruits
  ONE_APPLE
  TWO_BANANAS
  THREE_ORANGES
  FOUR_PINAPPLES
  </code></pre>
  
  <p>Is it possible to delete everything before the underscore, getting as a result:</p>
  
  <pre><code>Fruits
  APPLE
  BANANAS
  ORANGES
  PINAPPLES
  </code></pre>
  
  <p>There may be a pattern matching function but I haven't find the right one.</p>
  
  <p>Thanks for your support.</p>