Tech Freak

Cloud computing

2011-09-26T18:38:00.001+06:00

1.1 What is Cloud Computing?

Cloud computing is buzzing word now-a-days. But what does it really mean? Do you have to be sitting on a mountain with your computer among the clouds? Or on a plane with a laptop? Does it work when its sunny? Can you actually type on a cloud computing keyboard?
According to Wikipedia, Cloud computing is a virtualized computing platform that provides infinite resources for running your applications. It leverages economies of scale to save you money by only requiring you to pay for what you use.
But cloud computing is more big than that definition. And its growing bigger every day. There are basically 3 layers of cloud computing. Application, platform and infrastructure. Companies use them differently based on what they offer.
At the bottom of the foundation, the infrastructure. This is where things start and where people began to build. This is the layer where cloud computing lives.
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Return to old facebook chat [FB chat sidebar disabler]

2011-08-04T21:28:00.001+06:00

Well, facebook is changing its UI to add new features like voice and video chat. Recently it has changed the old chat interface and replace with a new chat side bar where all of your friends are visible without groups. Well many of the facebook users did not like new way of FB chat system. And I was also one of them :(. I was also a unhappy user until i found a suitable firefox addon to disable that shit and got back the old style facebook chat. Thanks to "VittGam" for his efforts to make FB Chat Sidebar Disabler extension for firefox, chrome and opera.

FB chat sidebar disabler for firefox

Risks of Geotagging - Are You Concerned?

2011-06-25T05:50:00.002+06:00

You own a pretty new smart phone as example iPhone or Android. You take pictures with your smart phone and post them online. Just a case: You took a photo of your car and posted it to your Twitter account with the caption "off to work." Another case: Moment is special to you, your kid just learned how to ride a bike without training wheels. So you fire up your iPhone's camera, took a picture,upload the image to Twitpic, and share the evidence of your kid's triumph via Twitter.
So what’s the worst thing that could happen? What personal information could possibly be exposed? Where’s the threat? In both cases when you post the pictures, you are actually allowing about 190 million Twitter users implicitly to know the exact location of you and your kid. Unfortunately, even as careful as some people may be about sharing personal information online, they may be unwittingly exposing information through a process called “geotagging.” So how does this data end up on a public forum like the Internet?
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Increase browsing speed little more by using own DNS resolver server.

2011-04-25T21:39:00.002+06:00

Using self hosted DNS server can get your browsing speed little bit faster. Because it will be reducing your round trip time for a DNS query. Look the below pictures.

The above picture shows that when I am using my ISP's DNS server there is approx. 51 ms of round trip time for communicating with that server.

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Taking Advantage of Public DNS to improve Browsing Experience

2011-02-16T19:11:00.026+06:00

Sometimes using public dns servers for resolving dns queries can get you better browsing experience. Well I am not saying that public dns servers like google dns, ultra dns or open dns are faster than your local/isp's dns servers. But sometimes public dns servers can give you better Internet experience if properly used along with your isp's dns server. If you want the fastest dns query results then it is suggested to setup your own dns server on your network.

In my case I was facing slow Internet browsing when my isp's dns server is overloaded with dns query requests on pick hours. So I started to use google public dns along with my isp's dns and dramatically my problem got solved.
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How to view pending friend requests in Facebook and remove them + solve send request problem

2010-10-24T10:48:00.012+06:00

Many of you had added too many friends on facebook and which are not still accepted. And some of you started getting message look like below.

So you may want to remove your pending friend requests. For this you may go to Account>>Edit friends but you didn't find any unaccepted friends!!
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Low Quality Image Problem Fix For Mobile Internet (GP) Users

2010-10-19T16:57:00.018+06:00

Recently many of my friends on social networks start complaining that they are started seeing low quality of images which they used to see in clear. Well this is because most of them are using mobile internet for browsing the pages. In Bangladesh the largest telecommunication provider GrameenPhone wasn't using data optimization policy on their network.But as their mobile internet customers grows rapidly these days they needed to use data optimization (pre-cache) for better network flow. Read more about GP's data optimization here http://www.grameenphone.com/node/655. This reduces the image in quality resulting extra free bandwidth. So the customers going to experience slightly better speed :D But some of us don't like to see nasty low quality images actually :@ so what we do is pressing ctrl+shift+r or ctrl+F5 to reload the page in high quality again.

The above picture on facebook displayed in low quality on my PC. As i am a firefox user so i found a way to prevent loading low quality images for ever :D
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Easily Update HP probook series BIOS

2010-09-24T09:13:00.002+06:00

The HP ProBook Series are the business style notebooks designed mainly for businessman and students with innovative features, providing powerful and reliable performance with the latest Intel processor in a 14" diagonal HD, LED-backlit display. This is a very new Laptop series from HP. So You may want to have a latest BIOS update for this series notebooks. You can easily update HP BIOS with different methods. But updating HP notebook BIOS is very easy with graphical BIOS updating tools. Just you need to download the latest BIOS from HP driver download site. Then follow the on screen instruction.

But before you begin there are some perquisites that you must follow. Check your BIOS version number and date from the bios in case you don't know the actual bios revision number.
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System Cleaner tool for both Linux and Windows

2010-09-15T11:44:00.002+06:00

You all are familiar with CCleaner (Crap Cleaner, a tool for cleaning unnecessary files on Windows systems). But what to do in Linux based systems like Debian, Ubuntu, Mint, etc? I have found a very similar program like CCleaner for my ubuntu that is BleachBit. BleachBit automates the clean up process of junks on Linux. BleachBit also has a windows version. Windows users can try that also.

Some Google tips

2010-07-28T08:47:00.000+06:00

A few things you might want to try with Google. Hand type the following prefixes and note their utility.
link:url Shows other pages with links to that url.

related:url same as "what's related" on serps.

site:domain restricts search results to the given domain.

allinurl: shows only pages with all terms in the url.

inurl: like allinurl, but only for the next query word.
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How To Use You Gmail With MSN Messenger

2010-07-26T07:24:00.002+06:00

I think all of you know it but if someone don't than here it is.
go to this page:
https://accountservices.passport.net/ppnetworkhome.srf?vv=800&mkt=EN-US&lc=1033

Find "Use an e-mail address you already have" then enter the relevant link.

Enter you gmail account as the email address. Fill all the other blanks and continue the registration. Go to your gmail account and verify the registration and know sign in with MSN actually this works will all emails not only gmail

Clearing BIOS with command prompt

2010-07-23T08:39:00.003+06:00

I have posted a method to hack BIOS passwords, you can find in previous post. Here's another one. Just little bit of code diversion. works 9.9 times out of 10.
This is a password hack but it clears the BIOS such that the next time you start the PC, the CMOS does not ask for any password. Now if you are able to bring the DOS prompt up, then you will be able to change the BIOS setting to the default.
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Hacking the BIOS password

2010-07-05T19:30:00.004+06:00

Want to hack BIOS password?? I know every geek have a secret desire to break into secured system. No matter how the security is!!!

You can break into a password protected BIOS using just three lines of low-level codes. Here in this post I am going to show you how you can reset BIOS to factory default. This is a bios accessing trick using low-level codes mainly. No matter what it is, it will definitely break BIOS password protection and reset to factory default. :D
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Converting FAT to NTFS on Windows

2010-07-05T18:53:00.011+06:00

Your hard drive must be formatted with a file system such as FAT, FAT32 or NTFS so that Windows can be installed on to it. This system determines how files are named, organized and stored on the drive. If you’re not using it already, NTFS (New Technology File System) is recommended for Windows XP because of the additional functionality it offers. If your PC came with Windows XP pre-installed then there’s a chance that you’re already using NTFS. If you’ve upgraded from Windows 98 or Windows Me you may still be using FAT or FAT32. The option to change over to NTFS would have been available during the upgrade process. Don’t worry if you skipped this as it’s possible to convert at any time from within Windows without losing data or formatting from beginning.
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Avira anti virus Update problem FIX!

2010-06-28T20:11:00.008+06:00

Avira AntiVir is a good free anti-virus [downlink: http://www.free-av.com/en]. But many users reporting that Avira AntiVir is not Updating properly or they have to do manual update. Well, I am also a Avira user and I have found a FIX regarding Avira's Auto update. It is just a simple trick. All you have to do, is to create a Schedule for Updating Avira in Avira's Scheduler. Here's the how to..

Open Avira AntiVir. On the main window click "Administration" then under it click "Scheduler"

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Configuring Comodo firewall for utorrent

2010-06-24T14:45:00.004+06:00

Comodo is a good free firewall to protect your computer from the hackers or trojans. But Limitation is if you are a "download and file sharing" addict then you must be using utorrent for your daily appetite. Comodo blocks some traffics of utorrent, so you will be experiencing slow peer speeds (download). But the fact is you can fix this problem.
Here's how...

1. Go to : Firewall -> Advanced -> Attack Detection Settings -> Miscellanous and disable Do Protocol analysis
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How to view memory register values on windows.

2010-06-22T11:51:00.006+06:00

If you are learning assembly language and want to view your computer's current values of memory registers then simply go open the command prompt window.
Then on type "debug" (with out quotes) and hit return key.
the prompt will be like this "-"
now you type "r" (with out quotes)
this will show up the registers values on the screen.
exp-

Clear Unwanted Items From Add And Remove

2010-06-20T22:17:00.000+06:00

Run the Registry Editor (REGEDIT).
Open HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall, and remove any unwanted subkeys under "Uninstall."

How To: Change Your IP In Less Then 1 Minute

2010-06-19T08:14:00.002+06:00

1. Click on "Start" in the bottom left hand corner of screen
2. Click on "Run"
3. Type in "command" and hit ok

You should now be at an MSDOS prompt screen.

4. Type "ipconfig /release" just like that, and hit "enter"
5. Type "exit" and leave the prompt
6. Right-click on "Network Places" or "My Network Places" on your desktop.
7. Click on "properties"
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Change the default location for installing aplications

2010-06-18T11:11:00.002+06:00

As the size of hard drives increase, more people are using partitions to seperate and store groups of files.

XP uses the C:\Program Files directory as the default base directory into which new programs are installed. However, you can change the default installation drive and/ or directory by using a Registry hack.
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How to Install (Unicode) complex script on XP

2010-06-18T07:33:00.009+06:00

Installing complex script on xp /Unicode support for right to left language like Arabic and other languages like Hindi, gujrati, malay ,bangla, here is the how to.

First go to "Control Panel" then double click "Regional and Language Settings". A Dialogue window will pop up. Select "Languages" from tabs. Tick the "Install files for complex script and right-to-left language (including Thai)" A confirmation message box will show up. Click Ok
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Cant See Secure Sites

2010-06-17T09:31:00.000+06:00

Fix the problem with seeing them secrue sites (banks or online stores) i found this very usefull to me at my work (isp backbone support lol, at the time i was regular support )

Any way... what u need to do is make a new notepad file and write in it the followng DLL's.. just copy-paste these

regsvr32 SOFTPUB.DLL
regsvr32 WINTRUST.DLL
regsvr32 INITPKI.DLL
regsvr32 dssenh.dll
regsvr32 Rsaenh.dll
regsvr32 gpkcsp.dll
regsvr32 sccbase.dll
regsvr32 slbcsp.dll
regsvr32 Cryptdlg.dll
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Boot Winxp Fast

2010-06-17T09:09:00.001+06:00

Follow the following steps

1. Open notepad.exe, type "del c:\windows\prefetch\ntosboot-*.* /q" (without the quotes) & save as "ntosboot.bat" in c:\
2. From the Start menu, select "Run..." & type "gpedit.msc".
3. Double click "Windows Settings" under "Computer Configuration" and double click again on "Shutdown" in the right window.
4. In the new window, click "add", "Browse", locate your "ntosboot.bat" file & click "Open".
5. Click "OK", "Apply" & "OK" once again to exit.
6. From the Start menu, select "Run..." & type "devmgmt.msc".
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Can not use my password to get back into Windows XP

2010-06-17T07:25:00.002+06:00

Because of the security features built into Windows XP, it is virtually impossible to get back into the system without the password.
You have several options to try and get around this problem.

If you have access to another user account with administrator rights, you can use that account to change the password
of the account that is locked out. You can also use the default Administrator account that is built into Windows XP.

First you need to boot the system into Safe Mode.
1.Restart your system.
2.When you see the blue Dell globe or screen, press the ( F8 ) key about 3 times a second.
3.You should get the Windows startup menu. Use the (Up or Down) arrow keys to highlight (SafeMode)
4.Press (Enter) on (Safe Mode), then press (Enter) on (Windows XP).
5.The system should boot to Safe Mode.
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Bulk renaming of files (from .*** to .zip or what ever you want)

2010-06-16T10:18:00.003+06:00

Let's us say you have just download a new album or game
but all the files are .*** (.*** is an example extension can be any like .dat or .htm) and you need them to be
zip's, rar's, mp3's etc.....
then do the following

-create a new folder
-put all the files needing editing in the new folder
-now open the command prompt
-goto "run" in the start menu
-type in CMD and click ok
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