Wednesday, 9 September 2015

inode and its structure in linux

Let me begin this tutorial by a famous UNIX statement which emphasizes the main underlying working model of Linux operating system. The statement is that "Everything Is a File".
If you are one of that person who spends a lot time with Linux or any NIX system, then you might have already understood that statement. Each and everything in Linux is accessed by a file. To make that much more clear, even block devices like Hard disks,and CD/DVD's are nothing other than a file(yeah but a special file..but a file).
Now if we start digging a bit deeper into files, we will come to know that, to the operating

Howto see output of C program in Linux or UNIX

Syntax
gcc -o output-file program.c

Task: Compile program

To compile type the command:
$ gcc test.c

How do I see all running process in Linux operating systems using command line or GUI options?

top command : Display and update sorted information about processes.
atop : Advanced System & Process Monitor.
htop : Interactive process viewer.

Command Prompt - Advanced Disk Management Commands

In one of our previous articles, we've shown how to manage your disks using the Disk Management utility. Now it's time to see how the same can be done from the Command Prompt using the DiskPart program. In this article you will learn how to create, format, delete and check your partitions for errors, directly from the Command Prompt.
NOTE: In order to perform any action presented in this article, you need to have administrative permissions and run the Command Prompt as administrator. Check out How to Run Programs as Administrator in Windows 7 to see how to run Command Prompt as administrator.
Important: If you misuse the commands listed in this article, you can risk losing your data. It is important to be careful and have a backup available for your data. Therefore proceed carefully and don't say we did not warn you. :)

Open Proxy Site

go to:-

     https://hide.me/en/proxy
enjoy
        - by kishor

404 Page Not Found

404 Page Not Found
404 Not Found error messages can appear in any browser and in any operating system. Most 404 Not Found errors display inside the Internet browser window just as webpages do.
In Internet Explorer, the message The webpage cannot be found usually indicates an HTTP 404 Internal Server Error but a 400 Bad Request error is another possibility. You can check to see which error IE is referring to by checking for either 404 or 400 in the title bar.
404 errors received when opening links via Microsoft Office applications generate a The Internet site reports that the item you requested could not be found (HTTP/1.0 404) message inside the MS Office program.
When Windows Update produces a 404 error, it appears as a code 0x80244019 or as the message WU_E_PT_HTTP_STATUS_NOT_FOUND.

How to Transfer Data between two laptops using LAN Cable

1. Insert IP address in both computer .

Open control panel window.
Choose Network and Sharing Center button.

Then you find a pop up box of Network and Sharing Center. Here, click on Change adapter setting.

In Network Connections Pop –up Window, right click on correctly installed LAN Card hardware adapter in your computer and select its properties.

Then Local Area Connection (LAN) properties window is appearing. Choose Internet protocol Version 4 (TCP/IPv4) button and click on properties option.

Now enter IP (Internet protocol) address in both computers manually according to below and select OK Option.

First computer (computer name – NAVIN – PC)
Enter IP Address: – 192.168.0.1
Enter Subnet mask: – 255.255.255.0

Second computer (computer name- ABHISHEK – PC)
Enter IP Address: – 192.168.0.2
Enter Subnet mask: – 255.255.255.0

After inserting IP address in both computer properly, restart it.
when computer will load windows 7, click on start search box and type network. click on this link.

In network tab, you find all connected computers in networking under similar workgroup.

How to share computer drives to transfer files over network ?
When both computers are showing in network tab and want to share computer drives

At first, open computer explorer window of the first computer, press right click on opted drive partition which we want to share with another computer over network.
From drop down menu list, choose share with option.
Now select Advance Sharing button.

A new tab of opted drive properties is appearing. click on Advance Sharing option.

Knoppix-Based Runtime Live CD - Experimental*)

Runtime Live CD
ISO Image 550 MB**)

Runtime Software has teamed up with Knoppix, the Linux-based bootable live system. Already used by Millions around the world, the Knoppix Live CD features automatic hardware detection and support for many network adapters, graphic cards, hard disk controllers, SCSI and USB devices, and other peripherals.

Free Download**)

Ready-To-Use Recovery Environment

How to Compile the Linux Kernel

The Linux kernel is the heart of any Linux system. It handles user input/output, hardware, and controlling the power in the computer. While the kernel that comes with your Linux distribution is usually sufficient, this allows you to make your owns specialized kernel!

Steps

npn- Transistor Operation

A forward-biased pn- junction is comparable to a low-resistance circuit element because it passes a high current for a given voltage. In turn, a reverse-biased pn- junction is comparable to a high-resistance circuit element. By using the Ohm's law formula for power (P = I²·R) and assuming current is held constant, you can conclude that the power developed across a high resistance is greater than that developed across a low resistance. Thus, if a crystal were to contain two pn- junctions (one forward-biased and the other reverse-biased), a low-power signal could be injected into the forward-biased junction and produce a high-power signal at the reverse-biased junction. In this manner, a power gain would be obtained across the crystal. This concept, which is merely an extension of the material covered in the previous topics, is the basic theory behind how the transistor amplifies. With this information fresh in your mind, let's proceed directly to the npn transistor.

The parts/components inside a hard drive

A hard drive has only a few basic parts. There are one or more shiny silver platters where information is stored magnetically, there's an arm mechanism that moves a tiny magnet called a read-write head back and forth over the platters to record or store information, and there's an electronic circuit to control everything and act as a link between the hard drive and the rest of your computer.
After a hard-drive crash last year, I was left with an old drive that no longer worked. I took a peek inside, and here's what I found...

Free Energy

Free Energy ....

ALL WINDOWS SERIAL NO

ALL WINDOWS SERIAL NO

Windows 95 :
CD-key Serial Number: 875-7215850 or
CD-key Serial Number: 100-1208613 or
CD-key Serial Number: 757-2573155

Windows 95 (2) :
CD-key Serial Number: 727-0208693 or
CD-key Serial Number: 767-0602634 or
CD-key Serial Number: 747-1012622

What is Robots.txt ?

The robots exclusion protocol (REP), or robots.txt is a text file webmasters create to instruct robots (typically search engine robots) how to crawl and index pages on their website.

Cheat Sheet

Block all web crawlers from all content


          User-agent: * 

          Disallow: /

Block a specific web crawler from a specific folder


          User-agent: Googlebot 

          Disallow: /no-google/

Computer POST and beep codes

How to Promote a website

Whether you’ve already taken your business online or still looking for a simple solution to create a professional website, you probably already know that promoting your website is crucial to your success.
If you have no previous experience with site promotion, you’re likely reaching for a bottle of Aspirin right now. But fear not, promoting your website isn’t only simple, it can be done without even spending a penny!
Check out the links below for a list of opportunities to promote your site online for free! With the right time and effort, you can find yourself attracting a whole slew of new clients to your great looking site!

Search Engines

It may or may not surprise you to hear that the majority of traffic from the internet is derived from search engines. With that said, search engines should be the first place that you should turn to to promote your online presence. Ensure that search engines know that your site exists by submitting your link directly to them. Once that’s out of the way, the best way to improve your search engine presence is by taking the time to improve your SEO.
Right now, the search engines that generate the most traffic are:
Google
Yahoo
Bing

Online Directories:

The modern day Yellow Pages, online directories are where potential clients turn to to find business solutions. Adding your site to online directories is extremely important as it greatly improves your site’s SEO by linking back to your website. When submitting your site, make sure to include important details like your location and business category so that your website will appear in sub-categories where new and potential clients can easily find you.
Yelp
Google Business
Yahoo Local
TripAdvisor
Yellow Pages
Super Pages
Angie’s List
Manta
DexKnows
BBB
Merchant Circle
Online Directories:

Bonus!
Restaurateurs should also take the time to get listed in these restaurant specific sites:
Urban Spoon
Open Table Restaurant Management Software
Be sure to add the Open Table App to your Wix site as well for maximum exposure.

Blogging Platform / Article Submission

Blogging platforms and article-submission sites are a terrific way to promote your site. All you need to do is write an original article related to your business and submit it to these sites. While it’s important to keep these articles informative, try to keep your tone friendly. Articles that sounds genuinely well-intentioned and have a less aggressive marketing tone, will likely draw more interest to your site than self-promotion alone. Blogs and articles are also great for promoting link building for SEO benefits.
Blogger
*Owned by Google, Blogger is hardwired with Google’s Adsense advertising program.
You can also add the Blogger Feed from the Wix App Market to your Wix Website for maximum exposure.
Tumblr
Postach.io
SlideShare
Digg

Photo Sharing

Similarly to social network sites like Pinterest and Polyvore, photo sharing sites give you the opportunity to display visual content that is related to your business, and can be used to refer and link back to your website. Photo sharing sites are not for photographers alone – any business can use these sites to post images of events, coworkers, news and everything in between, as long as it’s connected to your biz.
Picasa
*Another Google Integrated site, sharing and tagging on this site come with additional SEO benefits.
Flickr
Photobucket
Photo Sharing

Looking for an easy way to create a professional website? Wix’s web templates are optimized for SEO and mobile viewing & are super easy to customize.

Show Hidden Files Using Command Prompt

Go to Start>>All Programs>>Accessories>>Click Command Prompt.
Alternatively in recent version of windows you can click on Start and in the search box type "cmd" then press enter.

Ad
2

Click Start>>Computer/My Computer.
Look for a Removable (F:)(Example only)

This copy of windows is not genuine solution

1. Click on start menu.
2.Type cmd in search field.
3.Right click on cmd file and click on Run as Administrator.It is must to run command prompt with administrator privileges.
4. Type SLMGR -REARM (SLMGR is Windows software licensing management tool. REARM command will reset the licensing status of machine) and press enter.

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