title: Removing whitespace from Strings contained in double quotes bash script
body: <p>I've been using sep to attempt this, basically I have a text file, which contains a reasonable amount of the same line e.g.</p>
  
  <pre><code>4444 username "some information" "someotherinformation" "even more information"
  </code></pre>
  
  <p>I need to replace the spaces inside the quotes with underscores so it looks like this</p>
  
  <pre><code>4444 username "some_information" "someotherinformation" "even_more_information"
  </code></pre>
  
  <p>currently I have been able to separate out the quoted information</p>
  
  <pre><code>sed 's/"\([^"]*\)"/_/g' myfile.txt
  </code></pre>
  
  <p>Advice on how to proceed?</p>