You can now easily change the logon screen background of Windows 7 with regedit, since Windows 7 now supports the ability to load images into the background of the login UI screen.

Follow the below steps:

1) Type REGEDIT in start menu search box and press Enter.

2) Navigate to the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background

3) Right-Click on the right-side pane and select New -> DWORD (32-bit) Value.

4) Type OEMBackground as the DWORD’s value name.

5) Double-Click on the DWORD value called OEMBackground.Type 1 in the Value Data box and click OK.

6) Exit the Registry Editor.

7) Go to:

C:\Windows\System32\oobe\info\backgrounds (Change C to your system drive)

Copy the image which you want to use as the logon screen’s background image and paste it to the above location. The image must be in JPG format and it’s size should not be more than 256 KB(u can use mspaint or any simple image editor).

9) Rename the image to backgroundDefault.jpg. Now log-off to see the new background.

Kanyakumari Tour Photos

or

Globus Toolkit Auto Installation (GTAI) aims at the creation of Grid Environment setup with ease and comfort which performs the automation of various versions of globus toolkit installation and configuration.Globus Toolkit Auto Installation Utility is a part of the research activities of Centre for Advanced Computing Research and Education (CARE), Department of Information Technology, M I T Campus, Anna University Chennai.

GTAI version 1.0.1 has been tested on different linux platforms such as Fedora Core 3/4/5/6/7/8/9, CentOS 5, RHEL 4/5.The following installation steps are based on RHEL 5.

Before installing Globus Toolkit, you should make sure that the following packages are installed on your Linux OS:

• perl-XML-Parser, postgresql, xinetd, openssl097a, perl-libxml-perl, zlib, zlib-devel
• sudo, gcc, g++, make, tar, sed, perl

These packages comes along with the RHEL 5 DVD.To install these packages, go to Application->Add/Remove Software.After installing these softwares, type the following in a terminal as a root user

chkconfig postgresql on

server postgresql start

Edit the “/etc/sysconfig/network” file such that HOSTNAME points to a Fully Qualified Domain Name(xxx.xxx.xxx).In my case it was like this :

NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=master.grid.karunya.in

Next edit the “/etc/hosts” file to set the hostanme to the IP. My file looks like this :

127.0.0.1   localhost.localdomain   localhost
192.168.56.101   master.grid.karunya.in   master

Restart the machine and verify your hostname by simply typing the command hostname in a terminal.

Login as root user and download the software bundle GTAI-1.0.1.tar.gz and copy the bundle to the location “/usr/local”

Change to the directory and untar the GTAI-1.0.1.tar.gz file

cd /usr/local
tar -zxvf GTAI-1.0.1.tar.gz

GTAI uses the configuration file(auto.cfg) for the automatic installation of Globus Toolkit.Edit the file according to your requirements.Here is the sample of my GTAI configuration file:

#IP_ADDRESS: Ip Address of your host machine & should not be empty
IP_ADDRESS:192.168.56.101

#USERNAME: Name of the third party user for getting user certificate
USERNAME:guser01

#LRMS: Name of the Local Resource Management System. (PBS or SGE )
LRMS:PBS

#GLOBUS_VERSION: Version of Globus Tool Kit
GLOBUS_VERSION:globus-4.0.7

#GLOBUS_CONFIG_OPTION: Globus Tool Kit Configuration Options
#e.g GLOBUS_CONFIG_OPTION:–enable-prewsmds –enable-wsgram-pbs –enable-i18n –enable-drs –enable-gridway -with-gridwayargs=”–with-db=no”
#Default Config will be enabled if not set
GLOBUS_CONFIG_OPTION:

Download and save the file gt4.sh to “/etc/profile.d/” folder for setting the environment variables required for the proper working of Globus Toolkit.Then type the following command in a terminal

source /etc/profile.d/gt4.sh

At last run the script GTAI-install.sh as shown below

cd /usr/local
/bin/sh GTAI_install.sh

This script may run for two hour or more depending on the configuration of the system.Any error which occurs during this running of script may stop the installation process and can be viewed from the file “/tmp/log.txt“.

Testing of Globus Toolkit
Login as globus user and start the globus container

su globus
globus-start-container

You may find a set of services running as follows.Dont close this terminal.

Open a new terminal and login as guser01 and type the following commands to generate a proxy certificate.

su guser01
grid-proxy-init
grid-proxy-info

Query the resource information using the following command in a terminal window:

wsrf-query -s https://192.168.56.101:8443/wsrf/services/DefaultIndexService

Change the IP with the IP address of your machine.

Next we will submit a job for execution in the same terminal

globusrun-ws -submit -s -c /bin/uname -a

You will get the system information as the output.

Finally login as globus user and stop the globus container

su globus
globus-stop-container

For more information about Incubator GT Auto Install globus project, check the following link :
Incubator/GT Auto Install

Win+Home: Clear all but the active window.
Win+Space: All windows become transparent so you can see through to the desktop.
Win+Up arrow: Maximize the active window.
Shift+Win+Up arrow: Maximize the active window vertically.
Win+Down arrow: Minimize the window/Restore the window if it’s maximized.
Win+Left/Right arrows: Dock the window to each side of the monitor.
Shift+Win+Left/Right arrows: Move the window to the monitor on the left or right.
Win+P: Adjust presentation settings for your display.
Win+(+/-): Zoom in/out.
Win+G: Cycle between the Windows Gadgets on your screen.
Win+X: Mobility Center.
Win+U: Ease of Access.

Taskbar Shortcuts

Win+number (1-9): Starts the application pinned to the taskbar in that position, or switches to that program.
Shift+Win+number (1-9): Starts a new instance of the application pinned to the taskbar in that position.
Ctrl+Win+number (1-9): Cycles through open windows for the application pinned to the taskbar in that position.
Alt+Win+number (1-9): Opens the Jump List for the application pinned to the taskbar.
Win+T: Focus and scroll through items on the taskbar.
Win+B: Focuses the System Tray icons

Windows Explorer Shortcuts

Ctrl+Shift+N: Creates a new folder in Windows Explorer.
Alt+Up: Goes up a folder level in Windows Explorer.
Alt+P: Toggles the preview pane in Windows Explorer.
Shift+Right-Click on a file: Adds Copy as Path, which copies the path of a file to the clipboard.
Shift+Right-Click on a file: Adds extra hidden items to the Send To menu.
Shift+Right-Click on a folder: Adds Command Prompt Here, which lets you easily open a command prompt in that folder.

Share your favorite keyboard shortcuts in the comments.

Ooty2 Tour Photos

Christmas Star 2008

Parambu in Monsoon’07

Incessant rainfall (Thorana : 03/07/2007)

1) Install Pre-requisites on ubuntu
You need gcc and some supporting software like bison to compile go. Install the following :

sudo apt-get install mercurial bison libc6-dev python-setuptools python-dev

2) Install Go
Download the go source package from here.Copy go-path_syntax_build.tbz file to the “/usr/local” directory.

sudo cp go-path_syntax_build.tbz /usr/local/

Then type the following commands in a terminal.

cd /usr/local/
sudo tar –jxvf go-path_syntax_build.tbz

To change the default 386 architecture, edit the folowing file :

sudo gedit /usr/local/go/.paulson/go.sh

Replace the value of environmental variable $GOARCH to amd64
Save the file and follow the steps below :

cd /usr/local/go/src
sudo ./all.bash

Now wait for some time. The compilations will proceed and will be completed with the following message

— cd ../test
0 known bugs; 0 unexpected bugs

3) Test go
Your go language system is now installed.Now let us test it.I had already placed a simple hello program (hello.go) inside “/usr/local/go/examples” directory.

You can check it using vim editor or gedit(with go syntax)
gedit /usr/local/go/examples/hello.go

To compile hello.go

8g hello.go

8g is the Go compiler for 386; it will write the output in hello.8. The ‘8’ identifies files for the 386 architecture. The identifier letters for amd64 and arm are ‘6’ and ‘5’. That is, if you were compiling for amd, you would use 6g and the output would be named file.6

The above command produces an intermediate file hello.8.Next you have to link it.

8l hello.8

The executable is placed as 8.out. Finally run the executable using

./8.out

Execute Here Itself

package main
import "fmt"
func main() {
    fmt.Printf("hello, world\n")
}

Keeping up with releases
New releases are announced on the Go Nuts mailing list. To update an existing tree to the latest release, you can run:

cd $GOROOT/src
hg pull
hg update release
make all

To know more about GO programming language, visit :
GO Official Site
GO Google Group
There is an “unofficial” Windows port available, you can download it
from GO-windows.