title: Remove certain characters in a string using Windows command line
body: <p>I have a text file having the string:</p>
  
  <pre><code>pub: 
  04:d6:b6:f2:98:ff:94:d8:3c:36:ad:5f:86:40:aa:
  d1:5a:e1:87:5d:55:9d:ad:8b:2b:fc:18:e7:bb:47:
  7f:9f:9a:62:c6:19:3a:9e:65:62:4e:5e:98:6d:db:
  0e:7d:f9:22:a3:ca:cb:12:b2:ed:eb:14:0c:b3:31:
  59:02:17:6d:6a
  </code></pre>
  
  <p>I need to remove the 04 from the beginning of this and also remove the ':' from between the characters and print it like this, in a single line:</p>
  
  <pre><code>d6b6f298ff94d83c36ad5f8640aad15ae1875d559dad8b2bfc18e7bb477f9f9a62c6193a9e65624e5e986ddb0e7df922a3cacb12b2edeb140cb3315902176d6a
  </code></pre>
  
  <p>How can I do that using Windows commands?</p>