How to install Virtual Box 4.0.2 on Fedora 14 ?

Hai friends,

Yesterday(30-1-2010) Chandrashekar sir handled session on setting up Virtual Box on Fedora 14.

First we downloaded the latest version 4.0.2 from

As well as i told, in that site we can see various distribution  Virtual Box. Sir told, The  All distributions i386 | AMD64 is the best package to install the VBox on any distribution.

Go to your Downloads Directory in terminal as super user. Now if the downloaded file didn’t have Executive permission, First we have to give the +X permission for that file, By using this command

[root@mercury Downloads]# chmod +x

As a super/root user run the file preceded by ./(Package name)


[suresh@mercury ~]$ su -
[root@mercury ~]# cd /home/suresh/Downloads/
[root@mercury Downloads]# chmod +x
[root@mercury Downloads]# ./
Verifying archive integrity... All good.
Uncompressing VirtualBox for Linux installation..........
VirtualBox Version 4.0.2 r69518 (2011-01-18T16:49:20Z) installer
Removing previous installation of VirtualBox 4.0.2 r69518 from /opt/
Installing VirtualBox to /opt/

Wait for few sec.,

Now you can see the latest VirtualBox from Applications -> System Tools -> Oracle VM VirtualBox

That’s all !!! Enjoy !!!  

Applications -> System Tools -> Oracle VM VirtualBox


VirtualBox 4.0.2

Hai friends,

VirtualBox 4.0.2 released by oracle 10 days ago (jan 18th 2011).

Oracle VM VirtualBox is an x86 virtualization software package, originally created by software company innotek GmbH, purchased by Sun Microsystems, and now developed by Oracle Corporation as part of its family of virtualization products. It is installed on an existing host operating system; within this application, additional guest operating systems, each known as a Guest OS, can be loaded and run, each with its own virtual environment.

We can download the VirtualBox 4.0.2 for linux host here.

The  help page for installing VBox on Ubuntu is here

They will give package independent VBox.

  • Ubuntu 10.10 (“Maverick Meerkat”) i386 | AMD64
  • Ubuntu 10.04 LTS (“Lucid Lynx”) i386 | AMD64
  • Ubuntu 9.10 (“Karmic Koala”) i386 | AMD64
  • Ubuntu 8.04 LTS (“Hardy Heron”) i386 | AMD64
  • Debian 6.0 (“Squeeze”) i386 | AMD64
  • Debian 5.0 (“Lenny”) i386 | AMD64
  • openSUSE 11.3 i386 | AMD64
  • openSUSE 11.1 / 11.2 i386 | AMD64
  • SUSE Linux Enterprise Server 11 (SLES11) i386 | AMD64
  • SUSE Linux Enterprise Server 10 (SLES10) i386 | AMD64
  • Fedora 14 (“Laughlin”) i386 | AMD64
  • Fedora 13 (“Goddard”) i386 | AMD64
  • Mandriva 2010.0 / 2010.1 i386 | AMD64
  • Mandriva 2009.1 i386 | AMD64
  • Red Hat Enterprise Linux 6 (“RHEL6”) i386 | AMD64
  • Red Hat Enterprise Linux 5 (“RHEL5”) / Oracle Enterprise Linux 5 (“OEL5”) / CentOS 5 i386 | AMD64
  • Red Hat Enterprise Linux 4 (“RHEL4”) / Oracle Enterprise Linux 4 (“OEL4”) / CentOS 4 i386
  • Turbolinux 11 i386 | AMD64
  • All distributions i386 | AMD64

If you download the “.deb” or “.rpm” package means, the installation process is very simple. Just double click on the file. That’s all.

But If you download the “All distributions” file, You can’t install by double clicking.

So, Open your terminal and go to the Downloads directory and you have to give “+x” permission for that file. ( $ chmod +x )

Now just run that file using this command,

$ ./

That’s all !!!


Hai friends,

Heroku is an online Rack (and by extension, Ruby on Rails) cloud PaaS (Platform as a Service) run by the San Francisco, California based company with the same name. As one of the very first cloud platform as a service providers, Heroku has been in development since June 2007 and the company reports over 119,000 applications running on its service.


First we have to install “heroku’ in our machine, using the following command.

$ sudo gem install heroku

Then, we have to create a heroku account here.

Now we have  to upload our machine ssh key to Heroku, to push your work.

$ heroku keys:add

At the first time, you have give your heroku mail-id and password.

Now to create a remote application at Heroku, type this from the master branch of our rails project directory.

$ heroku create
Heroku will create a website for us, whose url will be given in the output, which will look like this, 

If you don’t like this format url address, you can change the url address by using this command,

$ heroku rename thasu

Now, that url looks like

Copy this url and paste it in your browser. And you’ll see the default application created by Heroku running. 

Now to push your work on to the Heroku,

$ git push heroku master

That’s all !!!

Welcome to the Ubuntu User Days!

Hai Friends,

Next User Day (times are tentative – watch this space!): Saturday January 29th 2011, 09:45 UTC – Sunday January 30th 2011, 03:00 UTC


About Ubuntu User Days

User Days was created to be a set of courses offered during a one day period to teach the beginning or intermediate Ubuntu user the basics to get them started with Ubuntu. User Days is a series of online courses where you can:

  • learn how to install Ubuntu
  • find equivalent programs in Ubuntu
  • learn how to get help
  • learn the basics of how to use Ubuntu
  • learn how to get involved in the community

Find out more about the Ubuntu Desktop, Server, Kubuntu, Xubuntu, Mobile, UNR, and download them.

The Timetable

January 29, 2011

Time (UTC) Subject (and logs) Presenter
08:30 Introduction to User Day nigelb, pleia2, nhandler
09:00 Software Installation shrini
10:00 Networking and sharing files in Ubuntu dnivra
11:00 Cloud for users Daviey
12:00 Ubuntu One ralsina
13:00 Finding Help in Ubuntu starcraftman
14:00 How to fix a broken machine popey
15:00 Switching from OS X aveilleux
16:00 Tips and tricks for multi-booters Cheri703
17:00 Inkscape Introduction doctormo
18:00 Command Line Email Clients for Ubuntu _marx_
19:00 Using IRC IdleOne
20:00 Accessibility apps Pendulum
21:00 Desktop Environments: Gnome, KDE, XFCE maco and pleia2
22:00 Command Line Basics imbrandon
23:00 Asking questions on Launchpad and Reporting bugs on Launchpad charlie-tca

January 30, 2011

00:00 Switching from Windows cprofitt
01:00 Entertaining and educating kids using Ubuntu MichelleQ
02:00 Linux Security Myth maco
03:00 Unity jcastro and Dbo
04:00 What’s cooking in Ubuntu jcastro


You can access the Ubuntu User Day classes using your browser by clicking here or by joining #ubuntu-classroom and #ubuntu-classroom-chat on the freenode IRC network using your favorite IRC client. Check out How to Participate for more information.


Tweet/dent and blog about the Ubuntu User Days. Our official hashtag is #UUD<mmm><yy>, so the hash tag for the next, to be held in January 2011, is #UUDJan11. Bring your friends and talk to people about the UUD sessions.

Open Week

Ubuntu Open Week is a week of IRC tuition and Q+A sessions all about getting involved in the rock-and-roll world that is the Ubuntu community. Find out more information here.

Developer Week

Ubuntu Developer Week is a similar to Open Week, but targeted more to developers. Find out more information here.

Folders Opens With VLC in Ubuntu!?

Hai friends,

Some times due to some reasons, Folders/Files/Home opening with VLC in Ubuntu. Because of you have most likely done the same for a folder with VLC in the past with this tick engaged (annoyingly it is ticked on by default) which causes the problem initially.

At Opening time

Opening with VLC ? 😦

Solution for this problem is very simple:

On any folder in your /home partition, right click and choose “Open with other application”.

Open With other Appllication

From the list choose “Fie Browser”

Select the "File Browser"

Finally ensure the tickbox for “Remember this application for “folder” files” is TICKED.

Check the "Tick" box

That’s all !!! Enjoy !!!  

Install Rails 3 on Fedora 14

hat friends,

Lets see “How to install Rails 3 on Fedora 14?”

Open tour terminal and login as super user then, follow the following commands.

$ yum install ruby

Rails 3 requires Ruby 1.8.7 or later and works best with Ruby 1.9.2. Now check which ruby you were installed using,

$ ruby -v

If you want upgrade your ruby version using RVM See Here

$ yum install rubygem-rails ruby-devel mysql-devel -y

$ yum install ruby-mysql -y

$ yum install rubygems

$ gem install rails

$ rails -v

That’s all !!!  

Getting started with new rails project

Upgrading ruby 1.8.7 into ruby 1.9.2 using RVM on Fedora 14

upgrading ruby 1.8.7 into ruby 1.9.2

Hai Friends,

lets see “Upgrading ruby 1.8.7 into ruby 1.9.2 on Fedora 14″

First we have to install all of the necessary tools and libraries:

 $ sudo yum install curl git-core build-essential zlib1g-dev libssl-dev libreadline5-dev

Install ruby 1.9.2 using RVM:

 $ bash < <( curl )

Oprn your “.bashrc” file and add the following line into .bashrc file

 $ sudo gedit .bashrc

(Add the following line into .bashrc file)

 if [[ -s "$HOME/.rvm/scripts/rvm" ]]  ; then source "$HOME/.rvm/scripts/rvm" ; fi

Close your terminal and open a new one, then run the following to test RVM install:

 $ rvm notes

Next, we can begin ruby 1.9.2 installation by running:

 $ rvm install 1.9.2

This install will take up to some minutes and once it completes you have to set ruby 1.9.2 as the default version:

 $ rvm --default ruby-1.9.2

Then you can test your new ruby install:

 $ ruby -v

That’s all !!!