Call the *nix command line "df -h" to obtain the disk usage of the server

disk usage.jsp

<%@page session="false" contentType="text/html; charset=utf-8" 
	pageEncoding="UTF-8" import="java.lang.*,java.io.*"%><%
    Process p = Runtime.getRuntime().exec("df",new String[]{"-h"});
    p.waitFor();
%><h2>STDERR:</h2><pre><%
    String line;
    BufferedReader error = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    while((line = error.readLine()) != null){
        %><%=line%>
<%
    }
    error.close();

%></pre><h2>STDOUT:</h2><pre><%
    BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
    while((line=input.readLine()) != null){
        %><%=line%>
<%
    }
    input.close();
%>
</pre>