The Geek Stuff

How to Install GIT for Windows and Create / Clone Remote Repositories

Ramesh Natarajan — Wed, 22 Feb 2012 06:02:58 +0000

GIT is an efficient open source distributed version control system. This article explains the following: How to install GIT on Windows How to create a local GIT repository on Windows How to connect to a remote GIT repository (that may be located on a Linux server) and download the files to work locally on your [...]

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5 Practical Linux fuser Command Examples

Himanshu Arora — Mon, 20 Feb 2012 06:02:40 +0000

The fuser utility in Linux is a powerful tool. As the name suggests it gives information about file user or the process that is currently using the file or directory. But fuser functionality is not just limited to giving information about the process. The article explains how to use fuser utility with 5 practical examples. [...]

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Linux Memory Management – Virtual Memory and Demand Paging

Himanshu Arora — Fri, 17 Feb 2012 06:37:43 +0000

Memory management is one of the most complex activity done by Linux kernel. It has various concepts/issues associated with it. This article is part of our on-going UNIX kernel overview series. In the previous article of the kernel series, we discussed about the UNIX process overview, and Reentrant Kernels. In this article we will try [...]

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XSS Attack Examples (Cross-Site Scripting Attacks)

Lakshmanan Ganapathy — Thu, 16 Feb 2012 06:02:50 +0000

In the previous article of this series, we explained how to prevent from SQL-Injection attacks. In this article we will see a different kind of attack called XXS attacks. XSS stands for Cross Site Scripting. XSS is very similar to SQL-Injection. In SQL-Injection we exploited the vulnerability by injecting SQL Queries as user inputs. In [...]

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10 Things You (and Your Boss) Can Do To Change Your World

Ramesh Natarajan — Wed, 15 Feb 2012 06:02:09 +0000

Most of your waking hours are spent at work. While at work, you spend most of your time working on the projects that are assigned to you by your boss. Complaining about your work and boss will not make you happy even when you think your boss is difficult, doesn’t understand your point of view, [...]

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UNIX Kernel: Reentrant Kernels, Synchronization and Critical Sections

Himanshu Arora — Mon, 13 Feb 2012 06:02:41 +0000

This article is part of our on-going UNIX kernel overview series. In the previous article of this series, we discussed about the UNIX process overview. This article explains on a high-level about Reentrant kernels, synchronization and critical sections of UNIX kernel architecture. Reentrant Kernels As the name suggests, a reentrant kernel is the one which [...]

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UNIX Process Overview (Inside a Linux Process, and Types of Process)

Himanshu Arora — Fri, 10 Feb 2012 06:02:16 +0000

A process is a running instance of a program. In this article we used two terms ‘program’ and ‘running instance’. Suppose we run a program simultaneously 5 times, then corresponding to each instance there will be a process running in the system. So we say that a process is a “running instance” of a program. [...]

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How To Install Apache Hadoop Pseudo Distributed Mode on a Single Node

Ramesh Natarajan — Wed, 08 Feb 2012 06:02:51 +0000

Apache Hadoop Pseudo-distributed mode installation helps you to simulate a multi node installation on a single node. Instead of installing hadoop on different servers, you can simulate it on a single server. Before you continue, make sure you understand the hadoop fundamentals, and have tested the standalone hadoop installation. If you’ve already completed the 1st [...]

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How to Prevent SQL Injection Attack (Explained with an Example)

Lakshmanan Ganapathy — Tue, 07 Feb 2012 06:02:39 +0000

This article explains basics of SQL Injection with an example that shows SQL Injection, and provides methods to prevent from these attacks. As the name suggests, this attack can be done with SQL queries. Many web developers are unaware of how an attacker can tamper with the SQL queries. SQL-Injection can be done on a web application [...]

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What is RTOS? – Real Time Operating Systems Basics

Himanshu Arora — Mon, 06 Feb 2012 06:02:09 +0000

Suppose a person is driving a car on a highway at a speed of 70 miles per hour. Now, somehow the car meets with an accident. Fortunately the airbag deployed at the right time and saved the life of the driver. So, we see that airbag is a very good feature in a car which [...]

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