How to Use Remote Desktop in Ubuntu 8.10

vino is VNC server for GNOME.VNC is a protocol that allows remote display of a user’s desktop. This package provides a VNC server that integrates with GNOME, allowing you to export your running desktop to another computer for remote use or diagnosis.

By default ubuntu will come with vino-server so it is very easy to configure to enable remote desktop sharing in your ubuntu machine.If you want to access ubuntu machine remotely you need to login in to your ubuntu system.

Important note :-

Remote Desktop will only work if there’s a GNOME login session.Leaving your computer with an unattended GNOME login session is not secure and not recommended.

Some Tips

1) You can lock your screen using System--->Quit

Once you click on quit you should see the following screen here you need to select lockscreen

2) switch off your monitor when computer is left unattended

Configuring Remote Desktop

First you need to go to System -> Preferences -> Remote Desktop

Once it opens you should see the following screen

In the above screen you need to configure remote desktop preferences for sharing and security

For Sharing

you need to tick the box next to the following two options

Allow other users to view your desktop
Allow other users to control your desktop

For Security

you need to tick the box next to the following two options

Ask you for confirmation (If you tick this option some one need to click on allow from remote desktop once it connected if you don’t want you can untick this option)
Require the user to enter this password:
Password: Specify the password

Connecting from Ubuntu Machine

Open your terminal from Applications--->Accessories--->Terminal and enter the following command

vncviewer -fullscreen 192.168.2.23:0

now you should see the following message asking for password enter the password after complete success you can see VNC authentication succeeded message and starting remote desktop

VNC viewer version 3.3.7 - built Jul 4 2006 10:04:48
Copyright (C) 2002-2003 RealVNC Ltd.
Copyright (C) 1994-2000 AT&T Laboratories Cambridge.
See http://www.realvnc.com for information on VNC.
VNC server supports protocol version 3.7 (viewer 3.3)
Password:
VNC authentication succeeded

If you want to quit vncviewer

Press ‘F8′ and select Quit viewer

Connecting from Windows machine

If you are trying to connect from your windows machine you need to install vncviewer of your choice i have installed from here http://www.realvnc.com/download.html.Install this program once you install this you can opem from start--->All programs--->RealVNC--->VNC Viewer 4--->Run VNC Viewer once it opens you should see the following screen here enter the remotemachine ipaddress:0 format and click ok

Now it will prompt for password enter your password and click ok

Now on the remote machine you should see the following screen asking for permission to allow this connection you need to click on allow this will comeup only if you tick “Ask you for confirmation” option under sharing

Once it connected you should see the remote machine desktop like the following screen

Creating Google gadgets with GWT

Create a new GWT/AppEngine project

Modify SimpleGadget.gwt.xml file:

xml version="1.0" encoding="UTF-8"?>

DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 1.7.0//EN" "http://google-web-toolkit.googlecode.com/svn/tags/1.7.0/distro-source/core/src/gwt-module.dtd">

<module rename-to='simplegadget'>

<inherits name="com.google.gwt.user.User" />

<inherits name="com.google.gwt.gadgets.Gadgets" />

<inherits name="com.google.gwt.http.HTTP" />

<stylesheet src="hello.css" />

<entry-point class='com.taktico.simplegadget.client.SimpleGadget'/>

module>

Modify SimpleGadget.java

package com.taktico.simplegadget.client;

import com.google.gwt.gadgets.client.Gadget;

import com.google.gwt.gadgets.client.UserPreferences;

import com.google.gwt.gadgets.client.Gadget.ModulePrefs;

import com.google.gwt.user.client.ui.Label;

import com.google.gwt.user.client.ui.RootPanel;

@ModulePrefs(title = "SimpleGadget", author = "Uki D. Lucas", author_email = "UkiDLucas@mac.com")

public class SimpleGadget extends Gadget

{

@Override

protected void init(UserPreferences preferences)

{

RootPanel.get().add(new Label("Hello World!"));

}

}

Modify SimpleGadget.html

DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<link type="text/css" rel="stylesheet" href="SimpleGadget.css">

<title>Web Application Starter Projecttitle>

<script type="text/javascript" language="javascript" src="simplegadget/simplegadget.nocache.js">script>

head>

<body>

body>

html>

Add gwt-gadgets.jar to your project

Compile the project

Post (deploy) the compiled directory on the Web (e.g. iDisk)

Open iGoogle -> Add Stuff -> Add feed or gadget -> paste your deployed gadget URLhttp://homepage.mac.com/ukidlucas/google_gadgets/simplegadget/com.taktico.simplegadget.client.SimpleGadget.gadget.xml

Finished SimpleGadget in iGoogle

Azim Premji - "My Lessons in Life"

An Article Address by Azim Premji in the "Shaping Young Minds Program" (SYMP) organized by AIMA in collaboration with the Bombay Management Association (BMA) in Mumbai on "My Lessons in Life".

I am very happy to be here with you. It is always wonderful to be with young people. As my hair turned from black, to salt and pepper and finally salt without the pepper, I have begun to realize the importance of youth. At the same time, I have begun to truly appreciate some of the lessons I have learnt along the way. I hope you will find them useful when you plan your own career and life.

First

The first thing I have learnt is that we must always begin with our strengths. There is an imaginary story of a rabbit. The rabbit was enrolled in a rabbit school. Like all rabbits, it could hop very well but could not swim. At the end of the year, the rabbit got high marks in hopping but failed in swimming. The parents were concerned. They said, "Forget about hopping. You are anyway good at it. Concentrate on swimming." They sent the rabbit for tuitions in swimming. And guess what happened? The rabbit forgot how to hop! As for swimming, have you ever seen a rabbit swim? While it is important for us to know what we are not good at, we must also cherish what is good in us. That is because it is only our strengths that can give us the energy to correct our weaknesses.

Second

The second lesson I have learnt is that a rupee earned is of far more value than five found. My friend was sharing me the story of his eight year-old niece. She would always complain about the breakfast. The cook tried everything possible, but the child remained unhappy. Finally, my friend took the child to a supermarket and brought one of those ready-to-cook packets. The child had to cut the packet and pour water in the dish. The child found the food to be absolutely delicious? The difference was that she has cooked it! In my own life, I have found that nothing gives as much satisfaction as earning our rewards. In fact, what is gifted or inherited follows the old rule of come easy, go easy. I guess we only know the value of what we have if we have struggled to earn it.


Third

The third lesson I have learnt is no one bats a hundred every time. Life has many challenges. You win some and lose some. You must enjoy winning. But do not let it go to the head. The moment it does, you are already on your way to failure. And if you do encounter failure along the way, treat it as an equally natural phenomenon. Don't beat yourself for it or any one else for that matter! Accept it, look at your own share in the problem, learn from it and move on. The important thing is, when you lose, do not lose the lesson.


Fourth

The fourth lesson I have learnt is the importance of humility. Sometimes, when you get so much in life, you really start wondering whether you deserve all of it. We have so much to be grateful for. Our parents, our teachers and our seniors have done so much for us that we can never repay them. Many people focus on the shortcomings, because obviously no one can be perfect. But it is important to first acknowledge what we have received. Nothing in life is permanent but when a relationship ends, rather than becoming bitter, we must learn to savor the memory of the good things while they lasted.


Fifth

The fifth lesson I learnt is that we must always strive for excellence. One way of achieving excellence is by looking at those better than ourselves. Keep learning what they do differently. But excellence cannot be imposed from the outside. We must also feel the need from within. It must involve not only our mind but also our heart and soul. Excellence is not an act but a habit. I remember the inspiring lines of a poem, which says that your reach must always exceed your grasp. That is heaven on earth. Ultimately, your only competition is yourself.


Sixth

The sixth lesson I have learnt is never give up in the face of adversity. It comes on you suddenly without warning. Always keep in mind that it is only the test of fire that makes fine steel. A friend of mine shared this incident with me. His eight-year old daughter was struggling away at a jigsaw puzzle. She kept at it for hours but could not succeed. Finally, it went beyond her bedtime. My friend told her, "Look, why don't you just give up? I don't think you will complete it tonight. Look at it another day." The daughter looked with a strange look in her eyes, "But, dad, why should I give up? All the pieces are there! I have just got to put them together!" If we persevere long enough, we can put any problem into its perspective.


Seventh

The seventh lesson I have learnt is that while you must be open to change, do not compromise on your values. Mahatma Gandhiji often said that you must open the windows of your mind, but you must not be swept off your feet by the breeze. Values like honesty, integrity, consideration and humility have survived for generations. At the end of the day, it is values that define a person more than the achievements. Do not be tempted by short cuts. The short cut can make you lose your way and end up becoming the longest way to the destination.


Final

And the final lesson I learnt is that we must have faith in our own ideas even if everyone tells us that we are wrong. There was once a newspaper vendor who had a rude customer. Every morning, the Customer would walk by, refuse to return the greeting, grab the paper off the shelf and throw the money at the vendor. The vendor would pick up the money, smile politely and say, "Thank you, Sir." One day, the vendor's assistant asked him, "Why are you always so polite with him when he is so rude to you? Why don't you throw the newspaper at him when he comes back tomorrow?" The vendor smiled and replied, "He can't help being rude and I can't help being polite. Why should I let his rude behavior dictate my politeness?

I hope you achieve success in whatever way you define it and what gives you the maximum happiness in life. "Remember, those who win are those who believe they can."

Calling JSP from a batch file

If you wondering why in the world should I call a JSP from a batch file then read on. In fact, my problem was to schedule a task that runs every day on a specific time and must generate a report for my management and email the same. Searching the net I was able to accomplish this by combining VB and batch files. But I was not happy with the results. Or to be more specific, my management was not happy with the type of report I was generating in terms of formatting etc.

What the management wanted was a nicely formatted report just as our internal WEB based reports. Now I realised that I have already a JSP that generates the report, now I only have to do two things.

1. Modify the JSP to instead of displaying, just generate the report in HTML format and then email it
2. Secondly I must find a way to schedule this emailing to auto email every day at a specific time.

So I have answered the question as to the necessity of calling a JSP from a batch file. Now that I have decided on what to do, I set search on how to do this. Then I found that batch file by itself cannot accomplish this, therefore I would need a combination of a batch file and a vbscript file (VBS).

So assuming you have a JSP page that generates the report and emails it. Do the following to automate the report generation:

1. Create a text file and copy the following content into it:

Option Explicit
Dim objIEA
Set objIEA = CreateObject("InternetExplorer.Application")
objIEA.Navigate "http://192.17.12.10/emailreport.jsp" (This should be changed to your actual url)
objIEA.visible = true
While objIEA.Busy
Wend
objIEA.Quit
Set objIEA = Nothing

2. Rename the text file to report.vbs

3. Create a batch file and name it as report.bat and copy the following content in that batch file.

cscript.exe report.vbs

4. Create a Scheduled task from windows or cron job in your Unix servers to call this report.bat as per your requirement.

How to read and write in file through JSP

<%@ page import="java.io.*" %>






<%
String fileName=getServletContext().getRealPath("jsp.txt");

File f=new File(fileName);

InputStream in = new FileInputStream(f);

BufferedInputStream bin = new BufferedInputStream(in);

DataInputStream din = new DataInputStream(bin);
StringBuffer sb=new StringBuffer();
while(din.available()>0)
{
sb.append(din.readLine());
}

try {
PrintWriter pw = new PrintWriter(new FileOutputStream("c:/file.txt"));// save file
pw.println(sb.toString());
pw.close();
} catch(IOException e) {
e.getMessage();
}

in.close();
bin.close();
din.close();
%>
Successfully write file