title: word extraction from a text file with bash
body: <p>I have a text file similar to the one below :</p>
  
  <pre><code>text src=127.0.0.1 text dst=127.0.0.1 text text proto=23
  text text text src=192.168.1.254 text text dst=192.168.1.40 text proto=3389
  text src=10.213.18.254 text dst=192.168.15.3 text text proto=389
  text text text src=192.168.1.254 text text dst=192.168.1.40 text proto=3389
  ...
  </code></pre>
  
  <p>I want to have an output file (using bash) similar to this one:</p>
  
  <pre><code>src=127.0.0.1 dst=127.0.0.1 proto=23
  src=192.168.1.254 dst=192.168.1.40 proto=3389
  src=10.213.18.254 dst=192.168.15.3 proto=389
  src=192.168.1.254 dst=192.168.1.40 proto=3389
  </code></pre>
  
  <p>Unlucky the information's are not always on the same column (and this makes awk useless).  Is there a way with bash to perform this action ? </p>