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Thursday, December 30, 2010

Origin 8 Graph Plotting Tool Tutorial Linux Windows

Origin is a software application with tools for data analysis, publication-quality graphing, and programming.

These system requirements apply to Origin 8.5, OriginPro 8.5, and the OriginPro 8.5 Student Personal Use version.

System requirements:

Sunday, December 26, 2010

How to install XCrySDen in Ubuntu Linux

XCrySDen is a crystalline and molecular structure visualisation program, which aims at display of isosurfaces and contours, which can be superimposed on crystalline structures and interactively rotated and manipulated. It can run on most UNIX platforms, without any special hardware requirements.

Saturday, December 25, 2010

How to install Quantum Espresso in Ubuntu Linux

Quantum ESPRESSO is an integrated suite of computer codes for electronic-structure calculations and materials modeling at the nanoscale. It is based on density-functional theory, plane waves, and pseudopotentials (both norm-conserving and ultrasoft).

Install Intel Fortran, C++ (ifort, icc) in Ubuntu Linux

You may need to install build essential as pre-requisite
for that open the terminal from Appliations --> Accessories --> Terminal, then type in

sudo apt-get update
sudo apt-get install build-essential

Intel Fortran Compiler for Linux is available at

Wednesday, December 22, 2010

Geany - The best text editor ( Free and Cross-Platform )

Geany is a small and lightweight Integrated Development Environment. It was developed to provide a small and fast IDE, which has only a few dependencies from other packages. Another goal was to be as independent as possible from a special Desktop Environment like KDE or GNOME - Geany only requires the GTK2 runtime libraries.
Some basic features of Geany: 

Tuesday, December 21, 2010

Proxy settings in Linux Ubuntu and Debian for apt-get wget

A proxy server, also known as a "proxy" or "application level gateway", is a computer that acts as a gateway between a local network (e.g., all the computers at one company or in one building) and a larger-scale network such as the Internet. Proxy servers provide increased performance and security. In some cases, they monitor employees' use of outside resources.

One can do proxy settings graphically from System --> Preferences --> Proxy Settings
and apply "System wide" But if there is an authenticated proxy, It was unable to apply properly. That's why it is better to apply manually all the settings.

Proxy settings has to be done in 3 areas...

Monday, December 13, 2010

How to fix " NTLDR is Missing " in windows XP ( Repair / Restore Windows XP in 4 steps )

In windows XP sometimes we will see NTLDR is Missing press Ctrl+Alt+Del to restart.

This occurs due to the following reasons.

How to fix " bootmgr is missing " in windows 7 and windows vista

If you see a message “bootmgr is missing” on starting your windows vista or windows 7 as shown

Bootmgr is missing: Windows 7

Insert windows installation DVD. Select language, Keyboard layout and click next.

Friday, December 10, 2010

Preparing windows to install UBUNTU Linux

In new laptops or desktops with windows os, all space will be occupied by C drive only (or) all space would be given to C drive. This is the procedure to resize it and make new partitions.

To shrink C drive in Windows Vista/Windows 7, Right click on My computer and select "Manage"

Wednesday, December 8, 2010

Restore or Reinstall Ubuntu grub after reinstalling Windows

If we reinstall windows on a Windows/Ubuntu dual boot system, we can not use Linux, until the Grub (GRand Universal Bootloader) is restored.

To restore grub, Insert the live CD/DVD of Ubuntu and restart the system to start a live session.

Installing g77 in Ubuntu intrepid (8.10), Jaunty (9.04), Karmic (9.10), Lucid (10.04), Maverick (10.10), Natty (11.04)

g77 is a part of gcc (GNU Compiler Collection) provided by GNU. But GNU stopped supporting it from gcc-4.2. Current Ubuntu versions starting from Ubuntu 8.10 (Intrepid) are using gcc-4.2 or higher. Current Ubuntu Maverick is using gcc-4.5. So to install g77 we need to install gcc-3.4. This package is included in the "universe" repositories of Ubuntu "hardy" distribution. Hence to install g77 in Ubuntu Intrepid, Jaunty, Karmic, Lucid, Maverick versions we need to add the hardy universe repository to the sources.list. Here is the procedure for it.

Monday, December 6, 2010

Change XP Product KEY

Hi friends Here is the Straight forward way to convert your windows XP Genuine:

The Steps are:

1. Click on Start and then Run.

2. In the text box in the Run window, type regedit and click OK. This will open the Registry Editor program.