ftp

There are two ways to do this -
First is to install it using the yum tool which comes built-in with most versions of the CentOS and may be this way to install ProFTPD will be preferred by most of us as it take less time and saves lot of our hard work.

Option1- Add the third party yum repository containing the required package as CensOS has no proFTPD package in its built in repositories.
To do this we will have to edit the CenOS-Base.repo file by doing -
vi /etc/yum.repos.d/CentOS-Base.repo

to the file add this :

[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1

Finally ask yum to install it for you by typing this command -
yum install proftpd

Option2- We can install it by using the source code. For this we need to download the required source code to install ProFTPD using -

wget ftp://ftp.proftpd.org/distrib/source/proftpd-1.3.2.tar.gz

Then extract it using -
tar xvfz proftpd-1.3.2.tar.gz

cd proftpd-1.3.2.tar.gz

Compile it using -
./configure
make
make install

Thats it you are done. I have not mentioned how to configure PureFTPD here. It was just a tutorial to install it.

Basically there is a very little difference between the two things as far as the features provided by them and the technology used are concerned. In fact the in both the cases the code written is not directly translated into the machine rather it is first converted to an intermediate representation called Microsoft Intermediate Language. Both VB .NET and C# .NET use the same intermediate representation which means the actual performance between two similar applications written in the two languages is practically zero because we can say that the intermediate code generated for both the programs will be exactly same. The main difference is in the syntax used by both the languages.

Difference in syntax of Visual Basic .NET and C#

The main reason why microsoft decided to include both the technologies in their Visual Studio product may be the user friendliness. Some of the coders who are have spent a lot of years in coding visual basic programs might not have adjusted so easily with the syntax of other languages lik c and c++. That is why a successor of visual basic was introduced which has all the features of the new generation along with the ease in use provided by visual basic. On the other hand the users who are familiar with the syntax of C, C++, etc. can use C sharp(#).

Difference explained with example –

In VB .NET -

For i As Integer = 0 To 7
TabControl1.TabPages(i).Text = “Tab: ” + i.ToString()
Next i

In C SHARP

for(int i = 0;i < 8; i++){
tabControl1.TabPages[i].Text = “Tab: ” + i;
}

As we can clearly see that the code in VB .NET resembles the old VB code while the C SHARP code resembles the C family languages and Java. The noticeable difference can be seen in the curly brackets. The previous one do not include the use of them while the later one uses mainly curly braces as delimiters.

When we enter a web address in our browser (techcrazies.com) our browser doesn’t know where the site Techcrazies is located. To find the specific address of the site in terms of ip address the DNS server is contacted first which converts the hostname (techcrazies.com) to ip address (67.228.90.201) which is the exact address of the server which is hosting the site. In order to be able to retrieve the ip adress fast the DNS servers i.e the computers which do the conversion must be fast enough but the DNS servers that our ISPs provide are not fast enough. This is where OpenDNS comes into action. OpenDNS provides a reliable and faster DNS service and the best thing is it is totally free. They are having their DNS servers located all over the world from which the server which is located near you will be used to resolve your DNS queries.

OpenDNS

The steps to use the DNS servers of OpenDNS are very easy. In windows XP open the my connections menu. Then go to the properties of the connection you are using, then scroll down to the bottom where you will find the TCP/IP properties following which change the values of the DNS servers to manual (if its initially automatic) and set the values to -

208.67.222.222
208.67.220.220

OpenDNS not only provides a faster DNS service but also protects us from pishing sites, sites containing malware etc. You can even set shortcuts to your favourite sites and block unwanted sites if your family has children.

Happy Browsing.

Linux

Many different versions of desktop environments are available for all linux distributions which include GNOME and KDE which are the most widely used desktop environments for linux. If you are running a server with low resources then KDE is a better choice as it is a less resource hungry environment. Lets see the steps to install these desktop environments. I assume you have got the basic CentOS,Red-hat,ubuntu or Fedora installed from the data center of your server. Log in to the server using a SSH client like “Putty” as the root user.

In CentOS you can use the YUM tool to install KDE. Type the following command to install K Desktop environment.

yum groupinstall kde-desktop

This will install the KDE alongwith resolving all the dependencies. If you are on a VPS it may happen that you get an error “Server refused to allocate pty” while trying to login via SSH. This happens mainly on the openvz based VPS’s as while resolving the dependencies YUM may accdently install and enable the package “udev” which changes the startup configuration of the system and sometimes rendering it useless and inaccessible which means all your important data can be locked inside. In this case only the server administrator can help you solve the problem without loosing the data when you come accross “Server refused to allocate pty” error. A simple way to solve this problem by adding the following lines to the file “/etc/rc.local”

/bin/rm -rf /dev/null
/bin/rm -rf /dev/random
/bin/rm -rf /dev/tty*
/bin/rm -rf /dev/pty*
/bin/mknod /dev/null c 1 3
/bin/mknod /dev/random c 1 8
/sbin/MAKEDEV tty
/sbin/MAKEDEV pty

This will force the system to allocate the devices every time the Machine is restarted. To install GNOME use the following command -

yum groupinstall “X Window System” “GNOME Desktop Environment”

After this has been done you will need to install the vnc server in order to access the desktop remotely. It can be done by the following command -

yum install vnc-server

This will make your server ready to accept remote deskop connections as soon as we start the server by starting the server and setting the password -

vncpasswd “yourpasswd”

Where your password is the password you desire to select and then you can start the server using -

vncserver

We need a vnc client to make connections to the server we just created. VNC clients are readily available for windows as well as linux which means you can access the desktop of your linux server using your windows machine. “real vnc viwer” is one such vnc viewer which is freely available. Following is to be entered in the vnc viewer to make the connection

192.168.1.1:5901

where 192.168.1.1 is the ip address of your server and 5901 is the port number on which the vnc server service runs by default.

Lets now find out some of the high paying niches-

medicine
mortgage
jewellery
insurance
health
weight-loss
acne
etc….

niche

Any niche related to money pays better. Medicines and health also pays good.

It is also a know fact that the advertisers in United States pay more and hence the PPC obtained from US traffic is very high as compared to traffic from other countries. So which marketing a niche its better to keep in mind the United States visitors and surely you can atleast double your PPC for the same niche.

One good alternative is adsforindians.com. These guys are serving local Indian ads and the necessary condition to participate in their ad campaign is that majority of your site traffic must be from India. One advantage of such local advertising companies is that visitors find much relevant advertisements there. When we take a look at the advertisements served by adsforindians a fact i noticed was some advertisements which are not traditionally seen on adsense and other companies like “flat for sale in pune” are seen. Obviously if the visitor finds the name of his area on the site he clicks the ad and opens it for curiosity even though he does not want to buy the flat. This dramatically increases the CTR.

Now lets also discuss the disadvantages of it. The most important disadvnatage is the that they pay flat rate of around 3-4Rs (0.07 – 0.09$) per click which is very less. Also if you have choosen your niche based on high paying adsense keywords you will still get the same rate. So the best option is to stick with adsense.

Coming to the technical specifications of the device, it has some amazing features that include a 7.5″ by 5.3″ screen which makes it easy to read the text. The display is crisp and bright which makes the reading experience even better. It has a memory of 256 mb means you can sore upto 200 of your favourite books on it. It also has a QWERTY keybord to input your text. It supports an SD expansion slot which means there is no limit on the storage memory. The other features if KINDLE include USB 2.0 support and a built in speaker which is very nice as far as the sound quality is concerned.

I called the KINDLE a revolutionary product in the begining heres the reason for that – Along with the outstanding features it also supports amazon’s “Whispernet” service  which works with EVDO mobile data transmission. That means you can always download new material from amazon using KINDLE. Overall its a nice product worth purchasing.

To read more about KINDLE visit Kindle Reviews and to to know more about the advantages of kindle visit Kindle Advantages .

Earn money

This section is dedicated to various ways in you can earn from the internet. But you might ask a question – “what is so specail about it ? Every other site on the internet have these things on it but nothing proved to be helpful for me.” The most important thing is i will not only introduce you to the new internet earning programs  but also make you familier with  internet marketing ideas that i have learnt over time and which are proven work.

Here are the different programs that i am going to cover in brief-

1> Google Adsense
2> Commission junction
3> Chitika
4> Amazon affiliate program
5> Ebay affiliate program
6>ClickBAnk affiliate program
and much much more……

Just keep in touch with the INTERNET MARKETING section only at TECHCRAZIES.COM

If you are planning to buy a new phone, you might have read reviews of the blackberry which are available all over the internet. When Reliance mobile first announced the Blackberry Storm it was considered to be one of the iphone killers that are available in the market. But as soon as it reached in the hands of reviewers the IPhone turned out to be the winner again. Still the blackberry storm has many features which might attarct the business class. And if you think that these special features will be useful for you, go for it and try the storm definitely its not a bad phone.

These are some of the problems that we found while reviewing the Storm. One more thing we did not review the phone as most of other journalists do. What we did was use it for a couple of days and find the practical problems that a user might find in using it. Lets get to the point-

1>The operating system of the Storm was found to be very buggy. This was the problem with the iphone too in the beginning but as soon as apple released the updates it was solved. We expect a quick update from Blackberry to fix these bugs.

2> The screen has some polarizing issues. It needs to be pushed down to type, some people found this to be a cool thing while others just hated it.

3> The operating system provided by blackberry is not as user-friendly as the Iphone conterpart. But i dont think this will be a problem for the users like me. Being a mobile-geek i am confident that i can use any complex device but this is a problem for the new users.

4> I liked the camera as compared to the other blackberries but compared to the other phones in the market the picture quality is not so good. The picture was pale and not so sharp but still it is better than the iphone.

I will post the complete review of the phone after 2-3 days. Let me digg it for a few more days.

Blackberry Storm

Acer uncovers its latest gadget for the emerging Indian market the ASPIRE ONE NETBOOK. Its a samll sized version of a laptop which will be sold out at just 14499 INR only for the version with built in linux operating system and 16499 INR for the version with windows XP built in.

 S.Rajendran of Acer Indian explain reporters about the desire of Acer to reach the lower end market of India which has a lot of people who want to use a laptop but cannot afford to buy one. He also said that with this product the dream of millions of Indians to use mobile computing will come true with this launch. This product will also target the students who like such gadgets but dont have enough amount availble to buy one.

The features of the aspire one netbook inculde the Intel atom processor, 1 GB of RAM, 160 GB of hard drive and a long battery life of around 3 hours as claimed by the company. Definitely this configuration seems to be very impressive as far as the price range of the device is concerned.

The product is named as netbook as it mainly targets the people who want a device which will mainly be used for net surfing but it is not the only thing this tiny computer can do. Lets hope it to be another quality product from acer.