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Enable SSL or HTTPS on Ubuntu 11.04 with Apache 2

This article refers to those people who want to enable their ssl on their local system or on servers.
More specifically on Ubuntu 11.04 and Apache2 we have to use fullowing commands to install apache2 and ssl.

1. First to install apache2
sudo apt-get install apache2
2. Then to install the ssl-certificate
sudo apt-get install ssl-cert
3. To create the ssl directory
sudo mkdir /etc/apache2/ssl
4. Hardcoding cert lifetime
sudo make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/apache2/ssl/apache.pem

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Extend Virtualbox Hard disk on CentOS-5

I have been struggling to increase the Hard disk size of my Development Enviornment on Virtualbox with CentOS-5.
Found some nice steps to increase the space of hard disk.
Follow these steps in order to increase the hard disk space.
A) First lets increase the size of current vdi file.
Download the tool CloneVDI in the attachment to copy the current hard disk.
1. Extract the tool and Browse the current .vdi file. suppose cent-os.v1.vdi is your current OS hdd.

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Nice Examples of XML and DOMDocument

Its all about the DOMDocument and generating the XML from the same with examples. I have created some of the good documents with the examples for generating the xml and formatting the same. You will get most of the functions with the examples are written in the following post :
$dom = new DOMDocument('1.0', 'UTF-8');
$root = $dom->createElement('root');
$dom->appendChild($root);
echo $dom->saveXML();
 
1. Creating XML Document and Displaying :

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Pareto principle

Mathematically, where something is shared among a sufficiently large set of participants, there must be a number k between 50 and 100 such that "k% is taken by (100 − k)% of the participants. The number k may vary from 50 (in the case of equal distribution, i.e. 100% of the population have equal shares) to nearly 100 (when a tiny number of participants account for almost all of the resource). There is nothing special about the number 80% mathematically, but many real systems have k somewhere around this region of intermediate imbalance in distribution.

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