18 Tar Command Examples in Linux

The Linux “tar” stands for tape archive, which is used by large number of Linux/Unix system administrators to deal with tape drives backup. The tar command used to rip a collection of files and directories into highly compressed archive file commonly called tarball or tar, gzip and bzip in Linux. The tar is most widely used command to create compressed archive files and that can be moved easily from one disk to anther disk or machine to machine.

In this article we will going to review and discuss various tar command examples including how to create archive files using (tar, tar.gz and tar.bz2) compression, how to extract archive file, extract a single file, view content of file, verify a file, add files or directories to archive file, estimate the size of tar archive file, etc.
The main purpose of this guide is to provide various tar command examples that might be helpful you to understand and become expert in tar archive manipulation.

25 Useful Basic Commands of APT-GET and APT-CACHE for Package Management

This article explains how quickly you can learn to install, remove, update and search software packages using apt-get and apt-cache commands from the command line. This article provides some useful commands that will help you to handle package management in Debian/Ubuntu based systems.

What is apt-get?

The apt-get utility is a powerful and free package management command line program, that is used to work with Ubuntu’s APT (Advanced Packaging Tool) library to perform installation of new software packages, removing existing software packages, upgrading of existing software packages and even used to upgrading the entire operating system.

What is apt-cache?

The apt-cache command line tool is used for searching apt software package cache. In simple words, this tool is used to search software packages, collects information of packages and also used to search for what available packages are ready for installation on Debian or Ubuntu based systems.

Virtual Keyboard in iPhone 6

Apple iPhone turns table top into full-sized invisible keyboard

We have virtual keyboards, clip-on keyboards, magnetic keyboards and even laser keyboards. But what if your keyboard wasn’t a keyboard at all?

Florian Kräutli has developed an ingeniously simple alternative called the Vibrative Virtual Keyboard. By placing an iPhone on any surface, that surface becomes a keyboard. Technically, the phone’s accelerometer is measuring vibrations on that surface. Kräutli’s software maps those vibrations to a point of origin on the table. And when the phone can “see” where you’re tapping, you can have a QWERTY keyboard on any tabletop.

“I wondered how a normal surface might become interactive, without using an elaborate combination of projectors and cameras, as Microsoft is currently doing in their research,” Kräutli explains. “There are already tons of sensors in current smartphones, so I thought there must be more that we can do with them.”

Xiaomi Mi 3

Earlier this week, Chinese consumer electronics giant, Xiaomi set foot in the Indian market with the official release of the flagship smartphone Mi3.

The company opened Xiaomi Mi3 online sale via Flipkart at 12 noon for pre-registered (numbering 100,000 plus, as claimed by Xiaomi) buyers and soon the smartphone stocks ran out exactly in 38 minutes 50 seconds.

Considering its feature-rich specifications and dirt-cheap price tag, Xiaomi Mi3 is all set to recreate a new storm just like Motorola's Moto G did in February earlier this year.

Xiaomi Mi 3 detailed specifications

BackTrack 5 or Kali Linux 1.0

BackTrack is/was a specialty Linux distribution for security professionals. It is designed for hacking and penetration testing and is loaded with the best Free and Open Source (FOSS) hacking applications available. The last edition was BackTrack 5 R3 (the R is for Revolution).

After BackTrack 5 R3, the developers decided to retool and revamp their distribution. The result of their effort was released as Kali Linux. So the gist of this article is this: BackTrack is now known as Kali Linux, and if you came to this website searching for information about BackTrack 5 R3, Kali Linux 1.0 is the distribution you should be looking for.

So, aside from upgraded applications and a name change, what’s the real difference between BackTrack and Kali Linux?

Cat5e vs. Cat6

Cat6 cables, also called Category 6 or Cat 6 cables, provide lower crosstalk, a higher signal-to-noise ratio, and are suitable for 10GBASE-T (10-Gigabit Ethernet), while Cat5e cables support only up to 1000BASE-T (Gigabit Ethernet). As a means of future-proofing your network, Cat6 is generally a better choice and worth the small premium in price. Cat5e and Cat6 cables are both backwards compatible, which means newer Cat6 cables can be used with older Cat5e, Cat5 and even Cat3 equipment.

Coming Soon : Lockscreen apps for Windows phones

Story on: http://www.techdevta.com/

New Lock Screen

Traditional Lockscreen

Back in May when Microsoft announced update Windows phone 8.1 during build 2014, this feature was kept secret from public but somehow we were able to get a peek through it.

This project is being developed with the collaboration of Microsoft and Windows phone developer Rudy Huyn.

Earlier from its screenshots only of this project it was depicted that users could thoroughly customize their lock screens to various predefined templates.

We see this as a brilliant effort from Microsoft which might help Windows phone to gain traction towards more premium features. And yes, this will be soon available as an 3rd party app from Windows phone store.

How to use WINE in Kali linux

What’s Wine?

Initially, the name Wine was an acronym for WINdows Emulator. But now, Wine Is Not an Emulator: it is a compatibility layer, an interface that allows to run Windows binaries on a host system. To do this, Wine implements the Windows application binary interface in the user space, rather than as a kernel module. A daemon known as wineserver provides the services normally provided by Windows kernel.

The security in Wine is good enough, because applications running in Wine are confined to the current user’s privileges. For this, is a good choice to not run Wine with the superuser‘s account, because of its unlimited privileges! However, it is too difficult that a virus written for Windows damages our system.

Simple code for KBC project in C#.net

The project includes a database(here I use SQL server) from where questions and options will be fetched to the Windows form in Visual Studio under C#.

This code is based on following database architecture:

How to trace IP address using Wireshark

Wireshark is software that "understands" the structure (encapsulation) of different networking protocols. It can parse and display the fields, along with their meanings as specified by different networking protocols. Wireshark uses pcap to capture packets, so it can only capture packets on the types of networks that pcap supports.
You can read more about Wireshark on Wikipedia: http://en.wikipedia.org/wiki/Wireshark .

You can download wireshark from the given URL: http://www.wireshark.org/download.html , select the required version from the list.

Watch how it works on youtube, Link:
https://www.youtube.com/watch?v=hBcvX6GA5UQ

Enjoy!!

FIND LOCATION BY IP ADDRESS

This is a simple trick and by using it you will be able to track someone’s location using his computer network’s IP (Internet Protocol Address) address. You can use this technique in anonymous chat websites like Omegle and other to find out the strangers location.  But first of all, you will have to be aware of some basic terms related to the worldwide web and computer networks.

What is an IP Address?

IP address is a numerical label assigned to each computer participating in a network. In simple terms it’s similar to your house number but in the case of computers it is assigned to identify it on the network. The IP address of your computer is accessed by almost every website so that it can communicate and identify your computer on the network.  Every computer has a unique IP which makes it possible to be identified and browse the internet. You can find out the IP address of your computer by  using sites like www.whatismyip.com or by simply searching for the term “What is my IP ? “ on Google Search.

Finding Serial Key Of Any Software Using Simple Google Trick

Finding Serial Key Of Any Software Using Simple Google Trick

Most of you download and use pirated software from torrents or any such other sites, but sometime it gets very difficult to find serial key of those softwares. I will make it easy for you by showing you simple yet very intersting google trick which will allow you to find serial key of any software very easily.

How To Find Serial Key Of Any Software ?

The key 94FBR is a part of  Office 2000 Pro CD activation key that is widely distributed as it bypasses the activation requirements of Office 2000 Pro. By searching for 94fbr and the product name, you are guarantee that the pages that are returned are pages dealing specifically with the product you're wanting a serial for. Follow simple steps given below to learn this trick

    1. Go to Google
    2. Then type  Software Name 94FBR

• Replace Software Name with the name of software whose serial key you want to find
• Eg: To find serial key of Nero i will type Nero 94fbr

    3. Now press Enter and you will find serial key of software you are looking for as shown below.

Basic Linux Commands

Starting a Terminal

In Unity

Unity is the default desktop environment used as of 11.04. Where systems are not ready for Unity they revert to GNOME which is also used in previous releases such as Ubuntu 10.04 LTS (Lucid), see next sub-section.

The easiest way to open the Terminal is to use the 'search' function on the dash. Or you can click on the 'More Apps' button, click on the 'See more results' by the installed section, and find it in that list of applications. A third way, available after you click on the 'More Apps' button, is to go to the search bar, and see that the far right end of it says 'All Applications'. You then click on that, and you'll see the full list. Then you can go to Accessories -> Terminal after that. So, the methods in Unity are:

Dash -> Search for Terminal

Dash -> More Apps -> 'See More Results' -> Terminal

Dash -> More Apps -> Accessories -> Terminal

Keyboard Shortcut: Ctrl + Alt + T

Complete Guide On How To Install Kali Linux In VMware

This tutorial will walk you through the difficult process of installing Kali Linux in VMware Player, a free virtual machine manager that can be downloaded from www.vmware.com.

Step 1:

First we need to download Kali from http://kali.org/downloads/. If you have a 64-bit capable computer , then you probably will want the 64-bit version of Kali for performance reasons.
Expand the drop down menu’s to find the version you need. Select the 64-bit version ONLY if you have a 64-bit computer.

Video Compressor

How to compress large video files without losing quality using Handbrake: 

Large video files are slow to upload and download.  One of the most popular tools that can significantly shrink the file size without losing quality is Handbrake.  It is popular due to three reasons:

• It can convert video from nearly any format, e.g. .wmv – Windows Media Video File, .avi – Audio Video Interleave File, .m4v, .mov, etc.

• It is free and Open Source

• It works on Windows, Mac and Linux

This tutorial illustrates how to compress a video file for the web on a Windows machine. The sample file I used to compress was called WL-Video.wmv and its original size was 39.0 MB.  After compression the file size was down to 4.40 MB.  The compressed video format is MP4 as it is the most supported video format on the web. Depending on your original video file, following the instructions in the tutorial, the file size may still be reduced if your video file is already MP4 format.

Download and install Handbrake if you do not have it

1. Download Handbrake at http://www.handbrake.fr
2. Double click the downloaded file to install Handbrake by following the instructions on screen.

Compress videos

3. Launch Handbrake.  Do not be put off by all the buttons and options available – you usually only need to use a few of them.

4. Click Source > Open File to select the video you want to compress.  In this tutorial, I select WL_Video.wmv and then click Open.  You can see the original size was 39MB.

5. In Handbrake, under Destination you can decide where the compressed file is saved by clicking Browse.  By default, it is saved in the same folder where the original file is.  You can change to other location if necessary.   You are required to provide a name for the compressed file.

6. For Output Settings, choose Mp4 if it is not selected and select Web Optimized.

7. Click on Video and make sure that H.264(X264) is selected.

8. Click Start to compress the video.  The green Start button will become red Stop button until the compression is complete.   When it is back to green.  You are ready to view the compressed video.  The original video file was reduced from 39.0MB to 4.40MB.  The compressing process for this small file took around 20 seconds.  If it is a very large file, it can take much longer to compress.

Note: 

This tutorial aims to introduce the basic features in Handbrake.

Microsoft/Web

Install WordPress for Windows

(http://www.microsoft.com)

WordPress is one of the most popular open-source blogging, publishing and content management systems, with a deep plugin and theme architecture that allows for limitless possibilities. WordPress also runs great on the Microsoft Web Platform. Microsoft is teaming up with the WordPress Community to make using WordPress on Windows even easier and Microsoft along with its hosting partners is working to make hosting WordPress on Windows a great choice for everyone.

Install WordPress

The Microsoft Web Platform Installer will download any
pre-requisites and then install WebMatrix and WordPress
for you. Just click Install and we’ll handle the rest.

  

Get Started with WordPress and WebMatrix 

Microsoft WebMatrix makes  it easy for anyone to create a WordPress site. WordPress available from the Web Application Gallery is fully tested to run on WebMatrix. Customize your site easily and then publish it on the internet from a wide choice of hosting service providers.

Create	Customize	Publish
WebMatrix makes creating a WordPress site easy. WebMatrix will download, install and configure the latest version of WordPress for you automatically. WebMatrix provides everything you need including the web server, MySQL, and PHP. It also includes our URL Rewrite module for “Pretty Permalinks” in WordPress and WinCache to ensure your WordPress site runs fast on Windows. By using the same stack on your development desktop that you’ll use on the server that hosts your clients’ site, the process of going live is painless and worry free.	WebMatrix lets you customize your WordPress site. The lightweight editor supports HTML, CSS and ASP.NET and makes you more productive with features such as color coding and tag completion. WebMatrix provides editing capabilities for your SQL Server database allowing you to modify your schema or edit data directly if needed. WebMatrix provides a Search Engine Optimization (SEO) report that crawls your local site. WebMatrix and gives you specific feedback to ensure your site is easily indexed by all the major search engines.	WebMatrix makes it easy to publish your site to a hosted server. WebMatrix supports the standard FTP and Secure FTP protocols as well as Microsoft’s WebDeploy protocol. WebDeploy makes publishing even easier by automatically configuring your server first as well as smartly deploying only the files that have changed for any updates. WebDeploy can even synch your development machine with your live site. Best of all WebMatrix includes aHosting Gallery with great offers for hosting on Windows. Get the best deals for hosting WordPress on Windows right inside WebMatrix itself.

New to WordPress?

Microsoft and the WordPress Community are teaming up to provide definitive and deep guidance on the installation, configuration and tuning of WordPress on the Microsoft Web Platform. Detailed technical information for installing and tuning WordPress on IIS is available on the WordPress Codex.

New to PHP on Windows and IIS?

There is a wealth of information for learning more about running WordPress or any PHP-based website on the Microsoft Web Platform including features and information on FastCGI, WinCache, PHP Manager and running PHP applications in our cloud platform, Azure. Plus links to detailed articles for users who want to get the ultimate performance from their WordPress sites on Windows. Visit our PHP on Windows page to learn more.

Starting with LINUX

Linux is a powerful and attractive desktop operating system

What is Linux?

Linux is an operating system, in the same way that Windows, Mac OS X, iOS and Android are all operating systems.

Essentially, what an operating system does is provide a platform for everything else on your computer to run on top of.

This platform is made up of lots of different parts. Some parts are responsible for making the hardware work, others for displaying the user interface, and still other parts for ensuring that applications can work with the hardware and each other. Just like Windows etc, Linux performs all of these functions.

You may be asking, "If Linux does all the same things that Windows or Mac OS X does, why bother switching?". The answer is that Linux has its own way of doing things, and for some people, the Linux way suits them better.