HowTo Enable or disable modules in Apache

You can enable or disable any apache module using a2enmod and a2dismod. You don’t need to edit the conf file for that unless you are having some problem with this method. The syntax of these commands is really simple:
To enable a module:

sudo a2enmod module_name

To disable a module:

sudo a2dismod module_name

For instance, to enable mod_expires, execute sudo a2enmod expires in the terminal. If you see the following output, you can be sure that it has been enabled.

dpac@dpac-laptop:~$ sudo a2enmod expires Enabling module expires. Run '/etc/init.d/apache2 restart' to activate new configuration!

To disable mod_expires:

sudo a2dismod expires

Restart the server after enabling the module.

sudo service apache2 restart

Or

sudo /etc/init.d/apache2 restart

PS: On linux systems, you can use auto-complete feature by pressing tab with a2enmod and a2dismod. It will show list of mods installed on your system.

How to trouble shoot Joomla CMS:

Somtime when you transfer your joomla website from one to another host joomla website stop responding and sometime show blank index and admin pages. This may be to conflicting somting,

So how we can check exactly which plugin or component or module is causing the problem?

Here is a Quick Method:

1..Install new joomla
2..on this new joomla installation Install as much component and plugins and module you

have that was in previous faulty CMS. (specially install K2).
3..upload your backup files into "Backup" folder.
4..Import your backup database into mysql.
5..take backup of all new joomla installation files and folder into "joomla" folder.
6..edit joomla configuration file and connect with your backup database.
7..copy template folder from "Backup" folder.
8..refresh the home page.
9..now copy one by one subfolders of plugin, Component, modules from "Backup".
and refresh the home page each time you copy the folder to see the effect.

when you see page blank or any error after copying any folder, revert it back from

"joomla" folder and note down the module or plugin folder name which is causing problem.

10..when you found the exact plugin or modules you can just disable from joomla admin panel.

The Best thing of this method, you can login from admin panel and you will see all option where you can disable SEF URL (which usualy caused problem) and all module, component  and plugins.

How to Disable GUI Boot in Ubuntu 12.04

Following the steps I followed to enable console boot in Ubuntu 12.04
Step 1 First update your repository by running

sudo apt-get update

Step 2 There is some bug in old version of lightdm, so we need to upgrade the same. To do so run,

sudo apt-get install lightdm

Step 3 Now we have to modify grub config.
Step 3a Open /etc/default/grub with your faviourite editor and change

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

GRUB_CMDLINE_LINUX_DEFAULT="text"

Step 3b Also comment GRUB_HIDDEN_TIMEOUT=0 This line is for unhiding the GRUB menu

Step 4 Now we will upgrade GRUB configuration

sudo update-grub

Step 5 Now restart your machine. Voilla you will be in console mode

At any time you need after booting your system you want to change to gui mode the run

startx

If you want to restore Ubuntu’s GUI mode then

Open /etc/default/grub with your faviourite editor and change

GRUB_CMDLINE_LINUX_DEFAULT="text"

to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Update GRUB by running

sudo update-grub

That’s it

How to Make Your Own Light Box

What is a light box? It's a photo studio in miniature. Shooting photos in the lightbox keeps the focus completely on the items you want to depict; there are no distractions in the background (which is white, or whatever color you choose to make it) and lighting from three sides eliminates any shadows. Click on the photos below to see the steps.

By lighting through the paper, the light is diffused and prevents stark reflections and shadows.
Two more tips:

• If you can, use lamps/light bulbs that imitate natural light. Otherwise, your background will appear slightly yellow, like in the picture below with the apple.
• Always take the photos without flash

Image to Vector in Photoshop

Learn how to create vector photo effect out of any image, clipart, graphics. You can obtain vector ink photo effects in just a few simple steps. I am planning to automate these steps into a Photoshop action that you can easily use and customize. In the meantime you can use Photoshop adjustments and filters like Photocopy and Threshold to create this vector effect.

In this tutorial I am going to show you a simple way to create a image to vector effect using any photo/image/graphics/etc. In the next tutorial I am going to show you how simple it is to turn from photo to vector shape in Photoshop. So let's start with this girl stock image; you can use any image you want but if you want to create vector silhouetts the best are the photos with white/black background. Or better still you can use cutout images.
Duplicate this layer and call the layers Girl 1 Layer and Girl 2 Layer. You can also keep a copy of the original layer. Go to Image>Adjustments and use the Threshold adjustment for the Girl 1 Layer. Set the level depending on your photo size, details, etc.
Set the foreground color black and the background color white. Go to Filter>Sketch and use the Photocopy filter for the Girl 2 Layer.
Set the blend mode of the Girl 2 Layer to Multiply and merge the two layers.
Use again the Threshold adjustment for the new created layer.
For a smooth edge result you can go to Filter>Stylize and choose Diffuse
This is how you can convert image to vector effect. You can now use the Paint Brush, color black to close the gaps and to use the Paint Bucket Tool if you want to add color. I have also added a vector sunburst using these free sunburst brushes to create a vector comics background. A similar technique I have used in one of my oldest tutorials on how to create a comic book effect in Photoshop