On DigitalIndia- Internet.org controversy

We can not pitch in with style sheet class name and wage a war against facebook. They have already officially committed that it was a mistake(just believe it) and would re write the code as soon as possible. Why I am more concerned here and even more suspicious when I heard the moment a user change DP , fb gather those detail and use it to state they got enough people to support internet.org . Recently facebook submitted 17 Lakh signatures to TRAI( Telecom Regulatory Authority Of India) showing support for it’s Internet.org .As per various reports, these signatures are believed to be the result of a poll conducted by Facebook which is also referred as “Cant Say No Polls” by critiques. (courtesy TLI). You can’t blame people when they are suspecting facebook as they have a history of changing users’ preferred primary email Ids to facebook.com Ids, without taking the consent of users. From Snowdens revelations it is also clear that Facebook has given access of users data to the surveillance agencies. All these are sufficient conditions on how much Facebook values users’ freedom and their privacy.

The note released by FSMI is well framed and the only solution to make us believe on what we think is right or wrong by opening source for public scrutiny (which is not going to happen anyway wink emoticon )

When it comes to the whole Digital India plan it is a brilliant ‘plan’ and want to see it get materialized without compromising on fundamental rights, netneutrality, privacy ,freedom of speech/expression etc. As everyone know during Modi’s visit to America ZuckerBerg came forward and announced his support towards Digital Inida. We are not sure what kind of support he is going to extend! It could be pushing internet.org or later renamed free basics or something else. The GOI could have made things clear by releasing a whitepaper on DI. Hoping that would be done soon.

Sunday school session on VirtualBox

Last Sunday it was my turn to handle session at Sunday school ( Week end session organized by FSMK on every Sundays to introduce new technologies around free and open source software ecosystem). I chose to introduce the virtualization tool VirtualBox. I was using virtualbox in my personal laptop for quite some time mainly for testing docker and someother tools. Hence I did not take much time preparing for the session.

Hereby I am sharing notes and list of sources referred  while preparing for this session.

VirtualBox

VirtualBox

There are several scenarios that make virtualization attractive:

  • Operating system support. With a virtualizer such as VirtualBox, one can run software written for one operating system on another (say, Windows software on Linux) without having to reboot.
  • Infrastructure consolidation. Since the full performance of today’s computers is rarely needed full-time, instead of running many such physical computers, one can “pack” many virtual machines onto a few powerful hosts and balance the loads between them. This can save a lot of hardware costs: e.g. by consolidating many servers into a few.
  • Testing and disaster recovery. Especially with the use of snapshots. One can mess with a computing environment by running it as a virtual machine. If something goes wrong, one can easily switch back to a previous snapshot and avoid the need of frequent backups and restores.

About

VirtualBox is a hypervisor for x86 computers from Oracle Corporation.

Developed initially by Innotek GmbH, it was acquired by Sun Microsystems in 2008 which was in turn acquired by Oracle in 2010.

For some guest operating systems, a “Guest Additions” package of device drivers and system applications is available which typically improves performance, especially of graphics

Initial release 15 January 2007; 8 years ago

Licensing
The core package is, since version 4 in December 2010, free software under GNU General Public License version 2 (GPLv2). The separate “VirtualBox Oracle VM VirtualBox extension pack” providing support for USB 2.0 devices, Remote Desktop Protocol (RDP) and Preboot Execution Environment (PXE) is under a proprietary Personal Use and Evaluation License (PUEL), which permits use of the software for personal use, educational use, or evaluation, free of charge

Hypervisor

Hyperviseur

A hypervisor or virtual machine monitor (VMM) is a piece of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor is running one or more virtual machines is defined as a host machine. Each virtual machine is called a guest machine. There are two types of hypervisors (in fact three type the third type Type 0 , the same is not implemented anywhere , hence you can just ignore it)

Type-1: native or bare-metal hypervisors

These hypervisors run directly on the host’s hardware to control the hardware and to manage guest operating systems. For this reason, they are sometimes called bare metal hypervisors. A guest operating system runs as a process on the host. Modern equivalents include Oracle VM Server for SPARC, Oracle VM Server for x86, the Citrix XenServer, VMware ESX/ESXi and Microsoft Hyper-V 2008/2012 are few examples.

Type-2: hosted hypervisors
These hypervisors run on a conventional operating system just as other computer programs do. Type-2 hypervisors abstract guest operating systems from the host operating system. VMware Workstation, VMware Player and VirtualBox are examples of type-2 hypervisors.

Everything is virtual

A real computer comes with set of hardware parts (touchable ) , system softwares and application softwares. The hardware parts consist of mother board, hard disks, RAM, CD/DVD drives etc. For a computer to run all these devices are important and absence/failure of anyone would result computer not to work.

When we say a virtual machine all these hardware component that I mentioned above should also be available as virtual components (nothing but software programs). In VM you have equivalent virtual component available for the actual hardware parts in a computer.

Downloading and installing virtualbox

http://www.wikihow.com/Install-Ubuntu-on-VirtualBox

Note : If you are using 64bit OS you may have to enable hardware virtualization in BIOS level for virtual box to function properly. Follow this link to achieve this.

VirtualBox features

http://www.howtogeek.com/171228/10-virtualbox-tricks-and-advanced-features-you-should-know-about/

http://geekthis.net/blog/98/virtualbox-video-capture

Download pre-built images for several open-source operating systems

http://virtualboxes.org/images/

https://virtualboximages.com/

 

Adding a CC mark to a WordPress blog

This works on WordPress.com as well as self-hosted WordPress installations.

  • Step 1: In your dashboard, go to the menu item “Widgets”, under “Appearance”.

Appearance

  • Step 2: Find the widget labeled “Text”, and drag it to your sidebar or footer. Location is entirely up to you. (yeah, that too!)

WidgetArea

  • Step 3: Paste the code provided by the CC license chooser in the widget’s text box, and click “Save”.

PasteCode

This should now display the CC mark depends on license you chose.

License

Courtesy : CC