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Archive for the ‘Tips & Tricks’ Category

I logged into Gmail this morning and found a new thing. I saw “Call Phone” in my contact list.

Contact list in Gmail

When I click on it, I saw the gmail chat window appearing and it was a phone dialer. There was a link in the dialer saying I need to install the plugin of Google voice. I did it Restarted the browser, logged into Gmail again, and now after clicking on “Call Phone” I saw the dialer and dialed a Canadian number and talked to a senior brother of mine. The voice quality was even better than that of direct phone call and there was no lag.

Google Voice Dialer

You can make unlimited free phone calls to USA and Canada. You can even call other countries with a nominal call rate. Moreover your account comes with $.10 credit free of cost so that you can make a test call to other countries. The call rate for Bangladesh is $.10 per minutes. Therefore you’ll be able to call a Bangladeshi number and talk 1 minute using the free credit.

You can find the calling rate in this link:  Call Rate of Google Voice

You can deposit money using credit cards. Anyway, this will be a very good news for people whose relatives live in USA or Canada – Enjoy unlimited free calls.

Getting virus infected is a daily occurrence for our pendrives. I never mind because I do have a very good virus protection tool, which will not allow the virus to spread into my system. In some cases what the virus does is that it hides all the folders, Changes widnows file/folder view options. Sometimes it doesn’t allow you to change the folder view settings. Well.. that matter is described in the following link:
Problem with “Show Hidden Files & Folders” in windows Folder Option – WORM_AUTORUN.RW

But here I’m going to share a new thing with you. After you clear up the viruses, after you fix the “Show hidden Folder option”- you may face that you are unable to unhide the folders in the pendrive. Those files/folders will remain Hidden as many times as you want to unhide them. If that’s the case I simply copied the contents of all the hidden folders to my local drive and then format the Pendrive (Pretty simple solution). But recently I faced this problem with the pendrive like storage of my LG Arena Phone set. This phone has a 8 GB internal memory and I often use it as a pendrive. Unfortunately I plugged this phone into a virus infected PC and it got virus infected too. I cleared up the virus files, but was unable to unhide the folders. Now, here I can’t just format the whole storage as there were many other system folders for that phone. I started googling and found a pretty simple solution at kioskea website. The solution was something like this:

1. click start>>run>>type in “cmd”
2. type the location of your flash drive.. e.g. “d:”, “e:”, “f:”, etc..
3. type “dir /ah”
*you will now see the files/folders with hidden attributes
4. type “attrib [name of file/folder] -r -a -s -h”
*if you’re going to unhide files, you should type the whole name plus the extension (format).. example “attrib picture.jpg -r -a -s -h”
**if you have folders with 6 characters and above, type the first 6 characters then “~1″.. example for folder named “birthday”
“attrib birthd~1 -r -a -s -h”
5. you should repeatedly type dir /ah after unhiding some files/folders so you’ll know if they’re now working or not..
6. now check your flash drive.. it should be there..

I hope this will help you if you are facing the same problem as mine.

I recently encountered a problem with a Joomla website which had VirtuMart in it. I moved the whole joomla site from a demo server to an active server with the actual domain pointing to it. Everything worked fine as I did the required changes in the configuration.php of the joomla folder. But the VirtueMart component was still pointing to the old demo server path. I then googles a bit and found a very good solution. I changed the config file of the virtuemart component located at:

/administrator/components/com_virtuemart/virtuemart.cfg.php

The following two paths need to be changed with the new path:

1. define( ‘URL’, ‘http://demoserverURL/joomlafolder/’ );
2. define( ‘SECUREURL’, ‘http://demoserverURL/joomlafolder/‘ );

Instead of the “demoserverLink/joomlafolder” use your actual joomla folder link.

You might face a new problem while doing this. If you are using ftp to download the file “virtuemart.cfg.php” and re-upload it with the changed path, you may get an “Permission Denied” error. There is a good solution for this too. Install a joomla component named “Extplorer” or “JoomlaXplorer“. This component is a joomla admin panel component that gives you the power to upload/delete/edit files in the joomla site. After installing any one of these two components just browse through the file and edit the above mentioned two lines of the “virtuemart.cfg.php” file.

I could get rid of the problem this way, I hope the solution will be useful for anyone facing the same problem.

I was planning for this post for a long time. I am a big fan of the software named: Sygate Personal Firewall.

It gives a powerful and easy to use firewall along with a bandwidth meter to monitor the upload and download speed. You can view 4 types of logs – Traffic, security, packet and system logs.

The packet log is very helpful to understand from where and to where packets are coming and going to respectively. It will show the destination IP along with the mac address of that IP device. You can also get the IPs of the sites you are visiting. You can view the packet types (UDP/TCP/IP etc).

It is a great tool to monitor the bandwidth (Upload/download speed).

You can control the applications and software that wants the internet connectivity. You can allow or deny access for individual application. You can even entirely block access or allow all to all the applications.

Options:

I have been using this for years and recommended to many of my friends who are aware of computer security along with bandwidth monitoring facility. I would like to recommend you also. Usage of this might seem a bit disturbing at the beginning as it will often prompt for your permission on whether it should allow or block the applications that want network/internet access.

I bet if you start using it, you’ll start liking it to. And at a certain time it will become a primary application that your PC will need. You can download the application

You can download Sygate Personal Firewall from this link.

1.Type “about:config” into the address bar and hit return. Scroll down and look for the following entries:

network.http.pipelining
network.http.proxy.pipelining
network.http.pipelining.maxrequests
and browser.turbo.enabled

Normally the browser will make one request to a web page at a time. When you enable pipelining it will make several at once, which really speeds up page loading.

2. Alter the entries as follows:

Set “network.http.pipelining” to “true”

Set “network.http.proxy.pipelining” to “true”

Set “network.http.pipelining.maxrequests” to some number like 30. This means it will make 30 requests at once. (Max can only be 8, but people report 30. The 30 open connections is incorrect)

Set “browser.turbo.enabled” to “true”

3. Lastly right-click anywhere and select New-> Integer. Name it “nglayout.initialpaint.delay” and set its value to “0″. This value is the amount of time the browser waits before it acts on information it recieves.

4. FOR XP USERS SEEKING FASTER FIREFOX LOADTIMES: Within the Firefox “shortcut” icon properties add /Prefetch:1 (outside the quotation marks) of the ‘target. For example: my target is “D:Program FilesMozilla Firefoxfirefox.exe” /Prefetch:1

Chk dis out it really works

Source: NSUers Online Community

Recently I encountered a problem with cmd.exe . Yes, I am talking about the command prompt that we get by typing cmd.exe and pressing enter in the “Start”->>”Run”. The error was something like “Windows couldn’t find cmd.exe”. I was annoyed and remembered that the recent virus attack affected a lot of files and cmd.exe could be one of them.

But when i typed “tracert hasibul.info” in “Start”->>”Run” to traceroute my site, I found that the command prompt appeared and it was trace routing. Atfirst I thought that cmd.exe probably was there. But l found that some of the options are not working. For example copying text from command prompt by right clicking and selecting “Mark”, “Copy” or “Paste” etc. Later I found that it was not cmd.exe rather it was command.com .

CMD.EXE is the command prompt for windows XP whereas COMMAND.COM is the command prompt of the DOS which is still there in  Windows XP. Comman.com supports many commands of DOS which CMD.EXE doesn’t support. But still when CMD.EXE was absent in my PC i could do the needful with command.exe .

Fundamentals of WiMAX:

http://www.megaupload.com/?d=RORFMDLQ

WiMAX Technology for Broadband Access:

http://www.megaupload.com/?d=UCZEXB40

WiMAX Technologies Performance Analysis & QoS:

http://www.megaupload.com/?d=H2YPJNZL

WiMAX Applications:

http://www.megaupload.com/?d=TAJUXJQY

WiMAX Operators Manual building 802.16 Wireless Networks:

http://www.megaupload.com/?d=8UOH9445

WiMAX Operators Manual building 802.16 Wireless Networks:

http://www.megaupload.com/?d=23JCM76T

I’ve recently upgraded the version of this wordpress blog from version 2.2 to version 2.6.2 . Although wordpress version 2.6.3 is available but still I had to go for 2.6.2 because wordpress was installed from the Fantastico (Free one click software bundle available in Cpanel) and 2.6.2 was the available update there. However I could feel the huge difference between the two versions although the out put in the web browser was same. It is the administration panel where I felt the improvement. The GUI is much user friendly with even richer graphics and options.

I was a bit tensed assuming that something might go wrong in the upgradation process. To extend the level of my tension I faced the first hurdle after the clicking the upgrade link in the fantastico when after the message appearing in the window said that the upgrade was successful and still many of the links like Categories, blogroll, links were not there in the homepage of the blog (http://hasibul.info/blog). The second problem I faced when I tried to login to the administration panel. After providing the username and password a message appeared saying that the memory limit is to low for me to browse the admin panel. I got more tensed because without the access to the admin panel I can’t post/moderate and control other features of the blog. However, as a precautionary step I backed up the database and all other files of the previous version. So I can say I was prepared for the rollback. But definitely I didn’t upgrade the blog to rollback to the previous version. Then I started googling and I found how to increase the memory limit.

The initial default memory limit was 8 MB. But for 2.6.2 version it required more. I found that there were three ways I can increase the php memory limit by adding a single line:

• memory_limit = 12M (in php.ini file, recommended if you have access)

OR

• ini_set('memory_limit', '12M'); (in  sites/default/settings.php file

OR

• php_value memory_limit 12M (in the .htaccess file in the root folder)

The php.ini file wasn’t available. And since I couldn’t log in to the Admin panel, wordpress couldn’t upgrade the files and database properly. Therefore editing the wordpress settings files for version 2.2 was of no use for the version 2.6.2. So I went for the third option. I added the following line to the .htaccess file available in the /public_html or WWW folder of the site. It worked and after loging again in to the admin panel the wordpress automatically upgraded by changing necessary files and database entries. After this step everything in the blog homepage was perfect again.

Since this is the first post after the upgradation and I haven’t gone through thoroughly, I can’t explain the improved facilities in this version, but I can assure that this version is way different than what I used to have earlier.

Google’s Chrome Browser through cartoon:

I bet you’ll like it, download it from here – Download Google Chrome

Happy Browsing….

It was what I was fearing of… 2/3 days ago the SEA-ME-WE4 (submarine cable) link went down. And I found that I couldn’t reach the sites which were hosted in local webservers (eg. btcl.gov.bd). I really don’t have a good concept of how these routing take place, but I think it is because of the Root DNS resolving Zone not being present in Bangladesh. To reach this root zone the International connectivity is a must (Submarine Cable). As far as I know- A company has been awarded the international gateway under their operation, if they can have a local DNS root zone which will look for if the requested URL is located at a local server. Since all the ISPs will connect through the same gateway, any web server hosted locally using local ISP’s bandwidth, will be available to users of other ISPs, thus not requiring Submarine cable bandwidth for these locally hosted sites. This will also encourage people to host websites at locally hosted servers, specially the sites which has most of its users from Bangladesh.

Expert’s words in this topic are welcome and will be encouraged….

deja-mu deja-mu deja-mu deja-mu deja-mu deja-mu