Rotate Your GNOME/Xfce Wallpapers With DesktopNova

Every operating system is customizable to a certain extent.  Some, such as Linux, offer an incredibly wide variety of icons and themes, with others, like Mac OSX, not offering much at all.  One option all operating systems have, however, is the ability to change the desktop background picture, or wallpaper.  In this instance, Mac OSX shines, as it offers the ability to rotate through a folder full of images at preset intervals, so you’re never looking at the same image for longer than you want.

Linux and Windows, however, don’t offer this ability, at least not by default.  There are utilities available for both that have this feature, and in this article we’ll be talking about DesktopNova, a utility for Linux.

DesktopNova, as mentioned, doesn’t come installed by default (or at least not in Ubuntu or other popular distributions), but Debian and Ubuntu users will find it already in their software repositories. Other Linux distributions will need to check their package manager, or download the source code from this page.
In Ubuntu, the quickest way to install DesktopNova is from the Terminal.  So first, go to the Applications menu, then Accessories.

Open Terminal

Next, type the following command: sudo apt-get install desktopnova desktopnova-module-gnome desktopnova-tray

note: in the above command, installing desktopnova-module-gnome enables desktopnova for linux distributions running the gnome desktop.  there is also an xfce module, so xubuntu users should install desktopnova-module-xfce instead.  desktopnova will not run without one or the other being installed.
Once installed, you’ll find two DesktopNova entries in the same Accessories menu where you found the Terminal.

Open DesktopNova

To get started, open the first option, leaving DesktopNova-Tray alone (for now).
When you open DesktopNova, you’ll see a single window with four tabs.  The Images tab is first.

Select Images or Folder

Here is where you can create profiles (for different users, themes or occasions), as well as how you identify which images or folders will be used.
The second tab, called Settings, is just that.

Session Options

It offers the ability to set the wallpaper change interval, whether or not DesktopNova should change your wallpaper every time you launch it (even if the change interval isn’t complete), and whether DesktopNova should autostart with your computer.
Third is the Tray-Icon tab.

Tray Icon Options

There are only two options here: first is whether or not to start the DesktopNova-Tray application at launch (which allows you to change the wallpaper manually), and whether mouse scrolling through your wallpaper choices should be turned off or on.
Finally, the Advanced tab.

Image Type Filter

Here you can type in as many file extension types as you want.  The ones you have listed will be shown, those you leave out will be ignored.  So if you have duplicate images in your folder, some in PNG and others saved as JPG, you can have DesktopNova show only one or the other, so you don’t get repeats as often.
As mentioned, the DesktopNova-Tray application allows you to move forward or backward between images, just with a couple clicks (or a flick of the mouse wheel).

Tray Icon

You can also access the DesktopNova preferences, see the about screen, or quit the tray icon entirely. DesktopNova isn’t an incredibly complex program.  It basically mimics the desktop wallpaper slideshow ability already present in GNOME, but allows you to choose images from different locations, and without editing any XML files.  It’s simple, but useful, and that should make it a nice addition for most Linux users.

Enable Snow on ubuntu desktop using compiz fusion

This tutorial shows how to enable snow on your ubuntu desktop using compiz fusion plugin.It is tested in ubuntu 9.10(karmic).
First,make sure you have compiz installed and enabled 3D effect.You can click here for this information.
Download following plugin:
for amd64 user:
for i386 user:
double click to install,or use this in terminal(Applications/Accessories/Terminal):

sudo dpkg -i package_name


Previous deb package might be old for your Ubuntu, here is how to compile and install the snow plugin from source code.
First, install the required packages:

sudo apt-get install build-essential git libtool
Then,use git command to download the source:
git clone git://
Navigate to the new created folder, and make and make install:
cd snow
make && make install

Now, open CCSM and you should the the “Snow” option in Extras.

Setting Up :

After this,open System->Preferences->CompizConfig-Settings-Manager.TickSnow in Extra tab.
Now,press win(Windows super key)+F3 key combination and see effect!

Install CanonCaptDrv2.2 on ubuntu

These instructions will help get your LBPxxxx Canon Printer driver installed and automatically starting with monitor on:
  1. Ubuntu 11.04 - Natty
  2. Ubuntu 10.10 - Maverick
  3. Ubuntu 10.04 - Lucid
It also seems to work in unsupported (old) versions such as 9.10 (Karmic) and 9.04 (Jaunty)
For other canon printers see: HardwareSupportComponentsPrinters/CanonPrinters and its sub-articles but hopefully yours is in the list below.

Supported Printers Capt Driver v2.2

According to the official Canon driver documentation:
See extra notes after table where there are *'s.
Please update if your get an unlisted printer/ubuntu version working by going to the bottom the of the and finding the edit link at the very bottom of the screen (requires login)
Printer Name
PPD File Name
Verified, Ubuntu Releases


LBP7200C series

LBP7200Cdn (network mode)


LBP6000 LBP6018



LBP5050 series








LBP3150 / LBP3108 / LBP3100

LBP3100 / LBP3108 / LBP3150

LBP3010 / LBP3018 / LBP3050
    11.04/10.10/10.04 /9.10/9.04






** LBP-810 is not officially supported in version 2.2 of the Canon Driver

Package Repository

The Canon CAPT printer driver is split into two packages: cndrvcups-capt and cndrvcups-common available from the Canon printer driver PPA. As of May 2011, this PPA contains 2.20 version of the Canon drivers, build for i386 and amd64 on Lucid, Maverick and Natty. This is the easiest way to install the drivers.
To add the PPA to your system and install the packages do:
sudo add-apt-repository ppa:michael-gruz/canon
sudo apt-get update
sudo apt-get install cndrvcups-capt cndrvcups-common

how to login as root in Ubuntu 11.04

enable root in ubuntu 11.04

Enable (Unlock) root on Ubuntu 11.04

1 : Open Terminal/shell , (hit CTRL+ALT+T)
2 : Then, Type the command (Followed by your Login Password).
sudo passwd root
3 : when you will be prompted for “Enter the New Unix Password” Twice, Enter the root password.
4 : That’s All, To enjoy root power, logout from the current user session. At the login window, Enter ‘root’ as a username and the password, you entered in above step.
Conclusion : In root mode, don’t perform any action about which you aren’t sure, because a single mistake can cause a lot of damage. If you just want to browse files in root mode, then you can browse nautilus in root mode with one simple trick.

Browse Files in Root Mode with Nautilus

Open terminal and enter the command (of course, followed by your login password).
sudo nautilus

how to install XFCE on Ubuntu 11.04

Installing XFCE Desktop on Ubuntu 11.04

step1 : Open terminal and type (You may need to authenticate yourself by login password):
sudo apt-get update
sudo apt-get install xfce4
step2 : Wait until the installation is complete. Next, logout from the current session and select Xfce session in login prompt.
step3 : That’s all.. Enjoy XFCE.. if you want to use other desktop then just select it at the login prompt.

Uninstall/Remove Ubuntu 11.04/10.10/10.04 Safely

1 : Uninstalling/Removing Ubuntu from Single Boot
If you have only one operating system i.e Ubuntu is installed on your computer , then it’s very simple because after removing ubuntu you will surely want to install another, you just need to follow this simple steps -
step 1 : If you want to install windows after removing Ubuntu, then simply create the bootable disk or USB that you will use for installing Windows 7 or vista (or XP).
step 2 : I assume you have already copied (otherwise login to Ubuntu and backup your data) all the data safely to another device or online back up such as Dropbox. Next, restart the computer and boot it from the Windows installation disc.
step 3 : Now format the ubuntu partition (if you had installed ubuntu on a particular partition) or the harddisk and install windows, follow on screen instructions..and you are Done! That’s All.

2 : Uninstalling Ubuntu from Dual Boot (with Windows 7)

You might be using Ubuntu as a dual boot along with Windows 7. Now, the the next step depends on how you had installed Ubuntu along with Windows 7. The most simple technique is to install Ubuntu using Wubi Installer, which installs Ubuntu on Windows as a program. If that’s the case, then you can uninstall Ubuntu just like any other program from Windows 7 or Vista. It’s quite simple.
On the other hand you might have installed Ubuntu on the other partition in dual boot mode. So now, if you delete or format the ubuntu partition then the windows boot-loader will no longer be available because when you installed Ubuntu it has replaced it with GRUB. So you won’t be able to boot into your Windows OS after deleting or formatting the Ubuntu partition.
step 1 : Insert the Windows 7/vista/xp DVD and restart your computer.
step 2 : Go to recovery windows/console and execute the following command(s) :
bootrec.exe /fixmbr
bootrec.exe /fixboot
to overwrite the MBR (Master Boot Record).
step 3 : Now, remove the installation disc, restart the computer and format ubuntu partition (ext3/4 file system) to a windows file system such as NTFS or FAT.
step 4 : That’s All. You are Done!

Blackbuntu Penetration Testing Distribution

  Blackbuntu is distribution for penetration testing which was specially designed for security training students and practitioners of information security.
Blackbuntu is Ubuntu base distro for Penetration Testing with GNOME Desktop Environment. It's currently being built using the Ubuntu 10.10.


Blackbuntu features the following upstream components: Ubuntu 10.10, Linux 2.6.35 and Gnome 2.32.0
System requirements
  • 1GHz x86 processor
  • 768 MB of system memory (RAM)
  • 10 GB of disk space for installation
  • Graphics card capable of 800×600 resolution
  • DVD-ROM drive or USB port

Community Edition 0.3 Beta Test
For Blackbuntu 0.3 we are supporting both x86 and x86_64 architectures. You can download the Blackbuntu Community Edition 0.3 Beta Test ISO DVD with the following link (Download via torrent):
Blackbuntu Community Edition 0.3 x86 torrent
Blackbuntu Community Edition 0.3 x86_64 torrent

Community Edition 0.2
You can download the Blackbuntu Community Edition 0.2 ISO CD with the following link:

Name: bbuntu-ce-0.2.iso
MD5: cb7557ec2f71197e4bab6dd48235c6f2
Community Edition 0.1
You can download the Blackbuntu Community Edition 0.1 ISO CD with the following link:

Name: bbuntu-ce-0.1.iso
MD5: 4e84db9bc21e5b469a5721ca3d2d6244

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