Fixing zip issue in Mac

on Saturday, April 18, 2015
Sometime while unarchiving the compressed files on your Macbook, you may be greeted with the following error message -
Unable to expand "" in "Folder".
(Error 1 - Operation not permitted)
You may think that something is wrong with the zip file. But in actual issue is with your machine. To fix this, you need to do following things-
  1. Open Disk Utility, and select your drive.
  2. Click on Repair Disk Permission
  3. Wait for few moments, until the process is completed.
  4. Now you are ready to go.
And after this also, if you are not able to unarchive the zip then there is something wrong with the compressed file.

A post for Computer Knowledge readers

on Wednesday, February 4, 2015
Hi Readers!

First of all I would like to say thanks to all of the tech readers, who visits from different part of the world and suggested something to do better than yesterday. In 2010 the blog was started, but now we are in 2015 and we have completed more than 4 years on the global village.

Before writing this post when I searched the web-log just by typing, I was happy to see the way it appeared-

Most of the peoples visit this blog from United States, India, France, Germany and Israel. And when it comes to browser, this website is browsed through Chrome, Firefox, IE, Safari and Opera. Operating system wise the users hit this website by Windows, Macintosh, Linux, Other unix and iOS.

Mostly the blog posts are related to such topics, which I was learning and exploring at that particular time. By being a human being we do mistakes, so the posts written by a human can have some silly mistakes :). If you find one and get a bit time to share please share it to me at

Happy reading, keep exploring and share the knowledge to world! :)

OS X Yosemite: New OS X

on Saturday, July 12, 2014
Apple's next operating system will be called Yosemite. Apple has shown it's preview new OS 10.10 at WWDC 2014, it's worldwide developers conference and also listed on it's website here. In this new OS X Yosemite article we'll discuss the new features Apple has announced.

Introduction to CMS

on Friday, March 7, 2014
CMS is a software tools that enables group of (centralized) technical and (de-centralized) non-technical staff to store, create, edit, manage and publish a variety of digital content.
Content management system (CMS) is a computer program that allows publishing, editing and modifying content as well as maintenance from a central interface. Such systems of content management provide procedures to manage workflow in a collaborative environment.

30% of the websites use CMS where
Wordpress is used by 16.8% Joomla 2.8
Druple2.2% and MODX 1.2% other 7%.
CMS (Content management system) is nothing but is simply a system that manage content including web content, images, audio files, etc. And one can make a large web application through CMS.

How to improve your site’s SEO

on Thursday, March 6, 2014
In my previous post I explained about what is SEO and it's type. If you missed that post you can see here Beginner guide to SEO. Now I will explain that how you can improve your website seo. And things I covered in section which may be usefull for you. These are the things I recommend you to do to improve your website SEO:

Beginners guide to SEO

on Wednesday, March 5, 2014
Search engine optimization is a methodology of strategies, techniques and tactics used to increase the amount of visitors to a website by obtaining a high-ranking placement in the search results page of a search engine (SERP) -- including Google, Bing, Yahoo and other search engines. SEO helps to ensure that a site is accessible to a search engine and improves the chances that the site will be found by the search engine. Search engine optimization affects only organic search results, not paid or "sponsored" results, search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a search engine's "natural" or un-paid ("organic") search results.
  • Content: How the text is written for the website.
  • Code: How the code (HTML) and other technical parts are written or designed.
  • Backlinks: How many people are linking “back” to your website (and what kinds of websites those links are coming from).

Resolving the connection problem in Mac OS X to any website

on Tuesday, February 18, 2014
While you are updating your website, or due to any reason if you are unable to open your website on your laptop or system. Is it not a funny situation? Developers may get frustrated with finding the bug that where is the problem. When they opened their website on any others system (using any other network connection) then they got surprise, that oh my website is working.
I'll suggest to trying each of the following steps, in order, until you’re able to connect again.

History of Computers

on Sunday, January 26, 2014
"Who invented the computer?" is not a question with a simple answer. The real answer is that many inventors contributed to the history of computers and that a computer is a complex piece of machinery made up of many parts, each of which can be considered a separate invention.
This post covers many of the major milestones in computer history (but not all of them) with a concentration on the history of personal home computers.
In World War II, mechanical analog computers were used for specialized military applications. During this time the first electronic digital computers were developed. Originally they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).
Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into mobile devices, and mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and are what most people think of as “computers.” However, the embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are the most numerous.

Stephen Cole Kleene

on Saturday, January 25, 2014
I had some hesitations about philosophy because, if you worked out a philosophical theory, it was hard to know whether you were going to be able to prove it or whether other theories had just as good a claim on belief. - Stephen Cole Kleene
Stephen Cole Kleene (January 5, 1909 – January 25, 1994) was an American mathematician. One of many distinguished students of Alonzo Church, Kleene, along with Alan Turing, Emil Post, and others, is best known as a founder of the branch of mathematical logic known as recursion theory, which subsequently helped to provide the foundations of theoretical computer science. Kleene's work grounds the study of which functions are computable. A number of mathematical concepts are named after him: Kleene hierarchy, Kleene algebra, the Kleene star (Kleene closure), Kleene's recursion theorem and the Kleene fixpoint theorem. He also invented regular expressions, and made significant contributions to the foundations of mathematical intuitionism.

OS X Mavericks - An Overview

on Wednesday, January 15, 2014
Mavericks is the latest version of Apple’s operating system for the Mac, and the good news is that it’s free for anyone running OS X Snow Leopard or later. Shifting to a free upgrade ensures that stragglers who wouldn’t have paid for it will still be able to keep their software up to date. This allows developers to create apps that make use of its capabilities, rather than limiting features for the sake of backward compatibility.

Interesting facts about computers

on Monday, January 6, 2014
  1. While it took the radio 38 years, and the television a short 13 years, it took the World Wide Web only 4 years to reach 50 million users.
  2. The world’s first computer, called the Z1, was invented by Konrad Zuse in 1936. His next invention, the Z2 was finished in 1939 and was the first fully functioning electro-mechanical computer.
  3. The Dvorak keyboard is more efficient than QWERTY. The standard “QWERTY” keyboard was not designed with ease of typing in mind. Rather, it was designed to keep early typewriters from jamming. 130 years later, in the age of computers, people are still using this awkward, inefficient keyboard layout. Few know that there is a much faster, easier, more efficient, and more comfortable alternative: the Dvorak (pronounced ‘duh VOR ak’) keyboard. Unlike QWERTY, the Dvorak keyboard was scientifically designed for increased speed and accuracy. It is estimated to be 12 to 20 times more efficient than QWERTY. Dvorak is great for beginning and experienced typists alike. It’s the layout used by some of the world’s fastest typists.

Changing MBR to GPT in Mac OS X

on Saturday, September 7, 2013
First for installing the windows operating system in Apple Macbooks, we must convert the partitioning scheme from GPT(GUID Partition Table) to MBR(Master Boot Record). The conversion can be carried out by the tool gdisk. The documentation they have provided is well written for the particular operation. Now let's discuss, why do?

Disk Utility's erase free space feature in Mac

on Friday, September 6, 2013
Disk Utility in Mac OS X v10.5 and later has the ability to securely erase the free space on a hard drive, to reduce the chances of deleted files being recoverable.
There are three erasure options that offer different levels of security:
  • Zero Out Data
  • 7-Pass Erase
  • 35-Pass Erase

World’s first laptop, still running!

on Thursday, August 22, 2013
It was invented in 1985 and it wouldn’t lay its hands on a PC until 10 years later. In that same 1985 though, the first mass market consumer laptop was released by Toshiba and it was called the T1100. Now you may think that it was a piece of crap and to today’s standards it most certainly is but it can still have a sense of humor:

Apple Mac Pro - Smaller, More Powerful. coming soon

on Tuesday, August 20, 2013
Apple announced a new Mac Pro at June 2013′s Worldwide Developers Conference, though details were scarce and the actual computer was not available for hands-on.
According to MacRumors , Apple began showing teasers in U.S. theaters over the weekend. If you happened to visit your local cinema to check out Jobs, chances are you saw the ad announcing the Pro availability this coming fall. With Apple’s rumored September 10 event approaching, where the company is said to be releasing the iPhone 5 S (possibly available in gold) and 5C, as well as iOS 7, there’s a good possibility the Mac Pro will be officially unveiled as well.