title: What does "wget -O" mean?
body: <p>I have an wget command like this in my shell script:</p>
  
  <pre><code>reponse="`wget -O- http:localhost:8080/app/index.html`"
  </code></pre>
  
  <p>I don't understand the -O- option. I was explained that -O is output to somewhere and - is output to the current stream. I don't see any explaination of "-" in wget. Is that a standard thing for shell scripting. Where I can find reference to it?</p>
  
  <p>Thanks,</p>