title: Regex: replace everything after underscore
body: <p>files are named like </p>
  
  <pre><code>name date _ uniqueid.pdf
  </code></pre>
  
  <p>result should be</p>
  
  <pre><code>name date _ somethingelse.pdf
  </code></pre>
  
  <p>I'll be using a find/replace so don't worry about the replace part. I just want to search matching the underscore.</p>
  
  <p><strong>This is NOT for c# .net, it is for find and replace in another program that accepts regex.</strong></p>
  
  <p><strong>I'm really sorry I should've mentioned this. No languages, just plain regex. ie. /[^_].*</strong> </p>
  
  <p>Thanks!</p>