title: R Returning all characters after the first underscore
body: <p>Sample DATA</p>
  
  <pre><code>x=c("AG.av08_binloop_v6","TL.av1_binloopv2")
  </code></pre>
  
  <p>Sample ATTEMPT</p>
  
  <pre><code>y=gsub(".*_","",x)
  </code></pre>
  
  <p>Sample DESIRED</p>
  
  <pre><code>WANT=c("binloop_v6","binloopv2")
  </code></pre>
  
  <p>Basically I aim to extract all the characters AFTER the first underscore value.</p>