title: Groovy shell script doesn't recognize export command
body: <p>I'm running a groovy shell script where I'm trying to set the proxy before running the <code>aws</code> command:</p>
  
  <pre><code>export http_proxy=http://proxy.url.com:8099
  aws s3 ls
  </code></pre>
  
  <p>But I'm getting this error:</p>
  
  <pre><code>Caught: java.io.IOException: Cannot run program "export": error=2, No such file or directory
  java.io.IOException: Cannot run program "export": error=2, No such file or directory
      at com.capitalone.cep.lensOps.run(lensOps.groovy:13)
  </code></pre>
  
  <p>The <code>export</code> command works fine when I run it in bash so what should I do in groovy to get it to work?</p>