When I restarted my apache server. I am using the fedora 9 here.

I did not get my default page opened in browser.
When I opened the apache error log file. I saw following error.

ModSecurity: Access denied with code 400 (phase 2). Pattern match “%0[ad]” at REQUEST_HEADERS:Cookie. [id "950910"] [msg "HTTP Response Splitting Attack. Matched signature <%0a>"] [severity "ALERT"] [hostname "localhost"] [uri "/"] [unique_id "SuWoGH8AAAEAAFF3rKEAAAAA"]

I after doing some R&D but I did not got any perfect soluction.
Then I cleared the whole browser cookies. That solves my problem.

solution – clear the browser cookies…

This is one of the most wanted hacks that users want to know how to accomplish. First you need to learn how to create a custom page. You will need to duplicate your page.php or create a wordpress.php file and add the following code at the very top:

<?php /* Template Name: wordpressapi */ ?>

You can change the template name. Change any styling, that you want in that page. Go to your WordPress admin panel and create a new page and select this template(wordpressapi).

Select your page to be the homepage as per your choise. Now you have yourself a Custom Home Page.

Have fun!

When I tried to run my one of my project on server I got following error on the Browser.:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, root@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

When I got above error I opened the error log file.

Error Log File log(#vim /var/log/httpd/error_log)
[Wed Oct 14 12:02:56 2009] [notice] mod_python: Creating 4 session mutexes based on 256 max processes and 0 max threads.
[Wed Oct 14 12:02:56 2009] [notice] mod_python: using mutex_directory /tmp
[Wed Oct 14 12:02:56 2009] [notice] Apache/2.2.9 (Unix) DAV/2 PHP/5.2.6 mod_python/3.3.1 Python/2.5.1 mod_ssl/2.2.9 OpenSSL/0.9.8g mod_perl/2.0.4 Perl/v5.10.0 configured — resuming normal operations
[Wed Oct 14 12:02:59 2009] [alert] [client 127.0.0.1] /var/www/html/your_domain_name/.htaccess: DirectoryIndex not allowed here, referer: http://your_domain_name.org/
[Wed Oct 14 12:03:29 2009] [alert] [client 127.0.0.1] /var/www/html/your_domain_name/.htaccess: DirectoryIndex not allowed here, referer: http://your_domain_name.org/
[Wed Oct 14 12:11:13 2009] [notice] caught SIGTERM, shutting down
[Wed Oct 14 12:11:13 2009] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Oct 14 12:11:13 2009] [notice] Digest: generating secret for digest authentication …
[Wed Oct 14 12:11:13 2009] [notice] Digest: done

At the end of file I saw above error.

When I saw that I opened the httpd.conf file and I searched for line.

AllowOverride None

I commented this line.
#AllowOverride None

Then I added following lines to that tag
Order allow,deny
Allow from all

Then I saved the httpd.conf file and restarted the apache server.

This solved the my issue.

Here I am using the Fedora 9 for this example.

If you want to host many sites on one computer or machine.
I added following lines to httpd.conf file(end of file).

<VirtualHost  *:80>

Options +FollowSymLinks
ServerName example1.com
DocumentRoot /var/www/html/example1

</ VirtualHost>

<VirtualHost  *:80>

Options +FollowSymLinks
ServerName example2.com
DocumentRoot /var/www/html/example2

</ VirtualHost>

When I restarted the apache server using following command.
#su
#ROOT_PASSWORD
#/etc/init.d/httpd restart

I got the following error;
[warn] _default_ VirtualHost overlap on port 80, the first has precedence

Again I opend the httpd.conf tile and I read following lines;
#
# Use name-based virtual hosting.
#
#NameVirtualHost *:80

# NOTE: NameVirtualHost cannot be used without a port specifier
# (e.g. :80) if mod_ssl is being used, due to the nature of the
# SSL protocol.
#

Than only I uncommented following line and restarted the Server.

NameVirtualHost *:80

My promlem get solved.

If you are new in Linux for that use this command.

#chmod 777 * //for chanding the all folders file permission
#chmod 777 FOLDER_NAME

Where I stuck, I want to change the Main folder and subfolders and all files persimission.
You can use following command.

#chmod -R 777 *
#chmod -R 777 FOLDER_NAME

We can use following functions for adding the Javascript file dynamically.

function AddJsFile(file) {
var script  = document.createElement('script');
script.src  = file;
script.type = 'text/javascript';
script.defer = true;

document.getElementsByTagName('head').item(0).appendChild(script);
}

Or We can use this also, both will work:
function AddJsFile(file)
{
document.write('');
}

We can use following functions for adding the CSS file dynamically.

function AddCssFile(file) {
var stylesheet  = document.createElement('link');
stylesheet.href  = file;
stylesheet.type = 'text/css';
stylesheet.defer = true;

document.getElementsByTagName('head').item(0).appendChild(stylesheet);
}

Or We can use this also, both will work:

function AddCssFile(file)
{
document.write('');
}

We can use the following code for remving the JS the files.

function RemoveJsFile(file) {
var alljs = document.getElementsByTagName("js")
for (var i = alljs.length; i >= 0; i--) {
if (alljs[i] && alljs[i].getAttribute("src")!= null && alljs[i].getAttribute("src").indexOf(file)!=-1)

alljs[i].parentNode.removeChild(alljs[i])
}

}

We can use the following code for remving the CSS the files.

function RemoveCssFile(file) {
var allcss = document.getElementsByTagName("css")
for (var i = alljs.length; i >= 0; i--) {
if (allcss[i] && allcss[i].getAttribute("href")!= null && allcss[i].getAttribute("href").indexOf(file)!=-1)

allcss[i].parentNode.removeChild(allcss[i])
}

}

You need to use this command for checking the engine type:

SHOW TABLE STATUS WHERE Name = ‘users’;

Or Use this command for checking the all table’s engine type.

SHOW TABLE STATUS;

Or You can use this command for database:

mysqlshow –status db_name;

I used following URL for creating this commands:

http://dev.mysql.com/doc/refman/4.1/en/show-table-status.html

5 SHOW TABLE STATUS WHERE Name = 'xxx'

Here I am giving you the very basic sample code for creating the XML file through PHP and MYsql

<?php

// We'll be outputting a PDF
header('Content-type: text/xml');

echo "”

$db_name = “testDB”;
$connection = mysql_connect(“example.com”, “username”, “password”) or die(“Could not connect.”);
$table_name = ‘user’;

$query = “select * from ” . $table_name;

$result = mysql_query($query, $connection) or die(“Could not complete database query”);
$num = mysql_num_rows($result);

while ($row = mysql_fetch_assoc($result)) {
echo “”. $row['firstname'].”";
echo “”. $row['lastname'].”";
echo “

“;
echo “”. $row['age'].”";
}

?>

When I started the creating new namespace JS library I got very useful artile to read.

http://pietschsoft.com/post/2007/07/Creating-Namespaces-in-JavaScript-is-actually-rather-simple.aspx

In this article they covered lot of things ( namespace protection objective )

Here I am using the namespace manager code:

// Create the Namespace Manager that we'll use to
/// make creating namespaces a little easier.

if (typeof Namespace == 'undefined') var Namespace = {};
if (!Namespace.Manager) Namespace.Manager = {};

Namespace.Manager = {
Register:function(namespace){
namespace = namespace.split('.');

if(!window[namespace[0]]) window[namespace[0]] = {};

var strFullNamespace = namespace[0];
for(var i = 1; i < namespace.length; i++)
{
strFullNamespace += "." + namespace[i];
eval("if(!window." + strFullNamespace + ")window." + strFullNamespace + "={};");
}
}

};

// Register our Namespace
Namespace.Manager.Register("Dummy.Utility.Class");

Here I regestered the namspace.

Dummy.Utility.Class.dunnyClass = function() {

this.test= function(){alert("test");}

this.test2= function(){alert("test2");}

}

Using this namaspace JS class in HTML.

var dumdum = new Dummy.Utility.Class.dunnyClass();

dumdum.test();

dumdum.test2();

I created javascript function named “getTheDiffTime” using that function you will be able to fetch the time difference in various format.

function getTheDiffTime(dateone, datetwo,format){
//format = "Days", Hours, Minutes, Seconds
if(dateone > datetwo) {
var seconds = dateone.getTime() - datetwo.getTime();
} else {
var seconds = datetwo.getTime() - dateone.getTime();
}
var second = 1000, minute = 60 * second, hour = 60 * minute, day = 24 * hour;
if(format=="Days"){
var rformat = Math.floor(seconds / day);
seconds -= rformat * day;
//alert("days: "+rformat);
}else if(format=="Hours"){
// find the hours
rformat = translate(seconds / hour);
//alert("hours: "+rformat);
}else if (format=="Minutes"){
//find the mintues
rformat= translate(seconds / minute);
//alert("minutes: "+ rformat);
}else if(format=="Seconds"){
//find the seconds
rformat = translate(seconds / second);
//alert("seconds: "+rformat);
}

return rformat
//alert(rformat);

}

How to use this function here I am giving you the one good example.

I am going to get the current months minutes using this function.

//for calculating the current month in mintue -script
currentMonth = new Date();
plus_oneMonth = new Date();
plus_oneMonth.setMonth(plus_oneMonth.getMonth()+1);

getTheDiffTime(plus_oneMonth,currentMonth,"Minutes");

You will get return the minutes.