How to use 7zip on Linux command Line
7zip is award winning open source file archiver. Besides operating on the 7z format, it supports many other popular archive formats and can seamlessly work on them. The 7zip project was started in 1999 by a Russian freelance programmer who is the developer and maintainer of this project. 7zip claims to have the highest compression ratio. As an end user, I have personally used 7zip many times and found it better than many other fellow archivers especially when compressing files into a 7z format. Its a great tool to have in your kitty so I... [More]
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Linux is obsolete - A must read debate between Andrew S. Tanenbaum and Linus Torvalds
If you are a Linux enthusiast but have never heard of this debate then I think you have missed something really interesting. The basis of this debate were the allegations made by Andrew S. Tanenbaum ( an American computer scientist and professor of computer science at the Vrije Universiteit, Amsterdam in the Netherlands. Also best known as the author of MINIX, a free Unix-like operating system for teaching purposes ) on Linux portability and kernel architecture in general. The debate was started in 1992 on the Usenet discussion group... [More]
Tags:  linux monolithic microkernel minix debate |
Detect memory leaks with Memcheck tool provided by Valgrind - Part I
Valgrind is a popular instrumentation framework that can be used for
variety of tasks like memory memory error detecting, thread error
detecting, call graph generation etc. Though it can be used for multiple
tasks, it's the memory leak detection for which it is used the most. Here in this article, we will discuss how Valgrind can be used to detect memory leaks using a practical C example.
More information Here is more information on this tool (from official website):
Valgrind is an
instrumentation framework for building dynamic... [More]
Tags:  valgrind leaks memory |
Wireshark - The best open source network packet analyzer(Part I)
We all know that communication in the world of computers happens in terms of packets. The data gets broken into packets like IP packets and it travels through the network and reaches its destination where the packets are reassembled and the data is delivered to the application that is expecting it. Have you ever felt a need of using a packet analyzer to capture and analyze the packets that arrive at your machine or leave your machine? Well, if yes then I must tell you that most of the network administrators, network programmers, protocol... [More]
Tags:  analyzer tutorial capture network ethereal wireshark packet |
Generalized Insert and Update Operations for Hive
(Authors: Ira Agrawal, Harsha Hulageri, Abhishek
Pratap Singh) Introduction to Data Warehousing Tools Data warehousing tools allow users to analyze information both
historical and incremental to find meaningful patterns among data. The
areas, where this will be helpful, include business reporting, trend
analysis, data mining, and other related areas. It will help business
users to slice and dice the data to gain more insight about the
available information. It can also be used to understand the customer
behavior and use that information... [More]
Tags:  wareshousing update hive insert operations data |
OSSEC - The open source Intrusion prevention system
OSSEC is an open source host based intrusion detection and prevention system (HIPS) that performs both profile and signature based analysis to detect and prevent computer intrusions. It is backed by a company named Trend Micro. OSSEC was initially developed by Daniel B. Cid to compensate for the lack of scalability of Tripwire (used for file integrity checking). More about the story of evolution of OSSEC can be found here . An excerpt from Wikipedia that explains the journey of OSSEC project till date : In June 2008, the OSSEC project, and... [More]
Tags:  ips prevention ossec system intrusion |
Useful Firefox tips and tricks
Firefox is one of the most popular web browser in world today. It's not just because of the fact that it's open source and free to download and use but also its a great piece of software that enhances your web surfing experience. Its not only fast as compared to its competitors but also it has tons of add-ons, plug-ins and other customizable options that makes it the favourite of many. In this article, we will focus some of the useful tips and tricks of Firefox that can make your web surfing experience better. Firefox tips and tricks 1. Get... [More]
Tags:  mozilla firefix tips tricks |
Aakash2 - A $20 (world's cheapest) android tablet
Aakash (sky) version 2 or Aakash-2 is the latest offering from a Canadian company Datawind. It is an android based tablet that is backed by Indian government to fulfill it's plan of empowering every student with a tablet. The real cost of tablet is around $35 to $40 but it will be provided at a subsidized rate of $20 to students in India. It is being hyped as a game changer in the Indian education sector where the quality of education for the students belonging to economically weaker section is not as per standards. The journey of this... [More]
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Why Big companies are embracing open source?
Gone are those days when open source software were used only by start-ups and small corporates. Today big companies are using and promoting open source software. Google, the internet search giant uses Linux(modified to cater its own needs) for most of its servers. Also Google is funding open source projects like chromium which forms the backbone of a popular chrome web browser from google. So we see that one of the biggest IT company is both using and contributing to open source. This change in outlook of big corporates towards the open source... [More]
Tags:  companies corporates opensource |
Attractions and Challenges of Open Source
Future Of Open Source Software What can you say about the future of Open Source Software which in itself is the future of software world? Open Source has given all new directions to technology. The best part about this technology is that any brain from any part the world can contribute towards its enhancement, then how come that it would not be better than a software written by a limited group of people sitting in a company. Open Source is ought to be better than Closed Source as... [More]
Tags:  software funding licenses open attractions future source |