title: Marking one value for hundred entries from a file
body: <p>I have a file like below</p>
  <pre><code>apple lime apple lime apple lime jackfruit papaya apple banana carrot jackfruit papaya banana
  apple lime apple lime apple lime jackfruit papaya apple banana carrot jackfruit papaya banana
  apple lime apple lime apple lime jackfruit papaya apple banana carrot jackfruit papaya banana
  </code></pre>
  <p>Now i wanted to grep only apple, lime and banana from the file.</p>
  <p>I used grep to find it</p>
  <blockquote>
  <p>grep 'apple|lime|banana' fruits.txt</p>
  </blockquote>
  <p>Now this returns me all the entries, rather i would need it printed only once.</p>
  <p>The output should be like</p>
  <pre><code>apple
  lime
  banana
  </code></pre>
  <p>Tried sort uniq and all didn't help much.</p>