title: how to grep range of numbers
body: <p>in a text file I have the following entries:</p>
  
  <pre><code>10.1.0.10-15
  10.1.0.20-25
  10.1.0.30-35
  10.1.0.40-45
  </code></pre>
  
  <p>I would like to print <code>10.1.0.10,15, 20, 25,30</code></p>
  
  <pre><code>cat file | grep 10.1.0.[1,2,3][0.5] -- prints 10,15,20,25,30, 35.
  </code></pre>
  
  <p>How do I suppress 35? </p>
  
  <p>I do not want to use grep -v .35 ...just want to print specific IPs or #s.</p>