title: sed to replace random site urls in ifrrame
body: <p>my problem there is alot of pages infacted with iframe each one of them have different url or  different  id
  here  is example </p>
  
  <pre><code>&lt;iframe src="http://xxxxxx.xxxx/xxxx.xxx" width=xxx height=xxx style="visibility: hidden"&gt;&lt;iframe&gt;
  </code></pre>
  
  <p>or</p>
  
  <pre><code>&lt;iframe src="http://xxxxxx.xxxx/xxxx.xxx?xxx=xxxx" width=xxx height=xxx style="visibility: hidden"&gt;&lt;iframe&gt;
  </code></pre>
  
  <p>where all xxx are random some times
  what i need to do is to remove,replace  this iframe  with blank
  like this</p>
  
  <pre><code>sed -i 's%&lt;iframe src="xxx://xxxxxx.xxxx/xxxx.xxx?xxx=xxxx" width=xxx height=xxx style="visibility: hidden"&gt;&lt;iframe&gt;%%g' file
  </code></pre>
  
  <p>sorry about my bad english 
  thanks in advance</p>