Back!

Well... After long time.

Since the last post many things have changed.

-Android smartphone market share has grown up and surpassed that iOS.
-Time has passed from Samsung Galaxy S to S3 and so on.
-Steve Jobs has left us.
-Motorola is a Google company.
-Obama is re-elected.
 and many more...

I was kind off busy with lot of other things in personal life. BUT I AM BACK!!

Trying to bring you guys more and more exciting stuff I find out. Stay tuned!

Have a nice day.

-Kishore

Orkut Badges for Power Users

Google has introduced badges in Orkut profiles to help you easily flaunt how active you are and how much you know of the social site.

For instance, if you have been on Orkut for more than 5 years, you get the “early user” badge while if you are active on Orkut forums, you are awarded with the “Super User” badge.

Some Orkut users have already been assigned badges though the full rollout will happen only in the coming week according to the Google Blog. Overall, this is a good way to give some recognition to the active Orkut users and, in the process, trying to keep them loyal to the site.

How to Verify an Email Address?

How do you verify if a given email address is real or fake? Well an obvious solution is that you send a test mail to that email address and if your message doesn’t bounce, it is safe to assume* that the address is real.

[*] Some web domains may have configured a catch-all email address meaning that messages addressed to a non-existent mailbox will not be returned to the sender but in most cases, such email messages will bounce.

Ping an Email Address to Validate it!

When you send an email to someone, the message goes to an SMTP server which then looks for the MX (Mail Exchange) records of the email recipient’s domain.

For instance, when you send an email to hello@gmail.com, the mail server will try to find the MX records for the gmail.com domain. If the records exist, the next step would be to determine whether that email username (hello in our example) is present or not.

Using a similar logic, we can verify an email address from the computer without actually sending a test message. Here’s how:

Let say that we want to verify if the address billgates@gmail.com exists or not?

Step 1. Enable telnet in Windows.  Or if you already have the PuTTY utility, skip this step.

Step 2. Open the command prompt and type the following command:

nslookup –type=mx gmail.com

This command will extract and list the MX records of a domain as shown below. Replace gmail.com with the domain of the email address that you are trying to verify.

gmail.com MX preference=30, exchanger = alt3.gmail-smtp-in.l.google.com
gmail.com MX preference=20, exchanger = alt2.gmail-smtp-in.l.google.com
gmail.com MX preference=5,  exchanger = gmail-smtp-in.l.google.com
gmail.com MX preference=10, exchanger = alt1.gmail-smtp-in.l.google.com
gmail.com MX preference=40, exchanger = alt4.gmail-smtp-in.l.google.com

Step 3. As you may have noticed, it is not uncommon to have multiple MX records for a domain. Pick any one of the servers mentioned in the MX records, may be the one with the lowest preference level number (in our example, gmail-smtp-in.l.google.com), and “pretend” to send a test message to that server from you computer.

For that, go to command prompt window and type the following commands in the listed sequence:

3a: Connect to the mail server:

telnet gmail-smtp-in.l.google.com 25

3b: Say hello to the other server

HELO

3c: Identify yourself with some fictitious email address

mail from:<labnol@labnol.org>

3d: Type the recipient’s email address that you are trying to verify:

rcpt to:<billgates@gmail.com>

The server response for ‘rcpt to’ command will give you an idea whether an email address is valid or not. You’ll get an “OK” if the address exists else a 550 error like:

• abc@gmail.com -- The email account that you tried to reach does not exist.



• support@gmail.com -- The email account that you tried to reach is disabled.

That’s it! If the address is valid, you may perform reverse email search to find the person behind the address. And if you get stuck somewhere, this step-by-step video should help:

 

Create a Career Tree from your LinkedIn Profile

This diagram illustrates the career path of the American President – the branches represent his education and the work experience. I think the size of the circles represent the relative time spent in a particular role.

If you would like to have something similar for your own career, simple head over to Newsweek.com and import your LinkedIn profile.

The more details you have in your LinkedIn profile, the ‘fuller’ your tree will be. You may also add details of your career to the tree manually using the “career tree form” available on the same page without changing your main LinkedIn profile.

Movie Scenes turned into Animated GIFs

Animated GIF images may remind you of those cluttered and distracting homepages of the Geocities era but take a peek at this impressive tumblr blog and it might forever change the way you think of GIFs.

The site features a brilliant collection of GIF animations created using frames of classic movie scenes that play in an endless loop. Here are some examples:

How to Create GIF Animations?

There are free tools available that let you easily convert video clips into animated GIFs that you can later host on sites like Flickr or Tumblr -- not all image hosting sites support animated GIFs but the one mentioned here do.

This is a two-step process – first convert the video into a sequence of image frames and then assemble these frames into a looping GIF animation with some custom delay.

Step 1: Download FFmpeg for Windows from sourceforge.net and extract the ffmpeg.exe file to, say, the c:\ffmpeg\ folder. The .7z files can be unzipped using the 7-zip utility.

Step 2: Now we’ll extract the frames from our video file. The command* is simple.

c:\ffmpeg\ffmpeg.exe -i movie.avi img-%03d.gif

If your video file is in another folder, you need to specify the full path of that file. Also, you may use MP4, MOV or any video format as well instead of AVI.

Step 3: Grab this portable utility called UnFreez and drag-n-drop all the image frames created in the previous step from Windows Explorer into the UnFreez window.

Enable “loop animation” and set the frame delay to say 20 cs (1 cs = 0.01 second).  Click “Make animated GIF” and preview your image is in any browser.

Screencast: Converting videos into GIF movies

[*] If you have a fairly long video file and would only like to convert a portion of it into an image, you need to slightly modify the ffmpeg parameters as shown below:

c:\ffmpeg\ffmpeg.exe -i movie.avi –ss 5 –t 3 img-%03d.gif

The parameter ‘ss’ refers to the start position in the video while ‘t’ is the duration for which you want to extract the frames. So in the above example, image frames for the file movie.avi will be at created from the 5 second mark for the next 3 seconds on the video.

If you would like to stop GIFs from animating in the browser, just hit the Escape key.