What is a Virtual Machine and How to Setup a VM on Windows

A virtual machine is basically a way to create a computer within a computer.
Nothing that runs on the virtual machine can impact the host computer.
For instance, if you are using a Windows computer you can run Linux programs inside a Linux virtual machine on the Windows computer.
A hypervisor or virtual machine monitor (VMM) is a computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is called a host machine, and each virtual machine is called a guest machine.

Few drawbacks with virtual machines :
Since hardware resources are indirect, they are not as efficient as a physical computer. Also, when many virtual machines are running at the same time on a single computer, performance can become unstable.

To setup a virtual machine you will need a virtual machine program. There are many different virtual machine programs you can use like : VirtualBox (Windows, Linux, Mac OS X), VMware Player (Windows, Linux), VMware Fusion (Mac OS X) and Parallels Desktop (Mac OS X).

Setting up a Virtual Machine :

To setup a Virtual machine we will use Virtual Box (virtual machine program). It is an open source program from Oracle. It allows users to virtually install many operating systems like Windows, BSD, Linux, Solaris, etc.

Start with downloading and installing VirtualBox. You can download it at this link : https://www.virtualbox.org/wiki/Downloads

You will also need to download an .iso file for the operating system that you want to run in your virtual machine. For instance, you can download a Ubuntu .iso file here:
https://ubuntu.com/download

Once you have VirtualBox running, click the “New” button

Create a new virtual machine

Next you will have to choose which OS you plan on installing. In the “Name” box, type the name of the OS you want to install. VirtualBox will guess the type and version based on the name you type in, but you can change these settings if you need to.

Configure the virtual machine

The wizard will automatically select default settings based on the OS type and version you selected. You can always change the settings as you go through the wizard. Just keep clicking “Continue” and “Create” until you get through the wizard. It’s usually fine to use the defaults.
Next, start the virtual machine you just created by clicking “Start“.

Start the virtual machine

Once the virtual machine starts up, select the .iso image file you want to use.
Your virtual machine will now load your selected operating system. The operating system may require some setup.

Ubuntu is successfully running inside a virtual machine

Congratulations! You’ve run your first Virtual Machine in VirtualBox.

If this post was helpful, please like and share below to show your support !

Take screenshots of webpages in Firefox

Are you working on a website & need a quick way to send someone a screenshot of what you are doing ?

Firefox has a screenshot tool built right in the browser that you can use to grab the entire web page or just what’s showing in the viewport or hover over a specific element on the page & capture just that.

Many of us take a lot of screenshots & send them to other people to communicate about websites we’re working on, projects we’re working on or ideas we have.
There are a lot of tools, plugins & add-ons to take screenshots.

Firefox has a screenshot tool that might be just the right fit for making it very quick and easy to take the screenshots that you need.

Firefox screenshot tool

In the above image, you can see up in the URL bar, in the Page action menu, click on three dots and select Take a Screenshot from the drop-down or you can also take a screenshot by right-clicking on a page and selecting Take a Screenshot

Firefox screenshot tool displays two options

In the above image at right side corner you can see that after clicking on Take a Screenshot you have a choice.
We can take a screenshot of just the visible view port or we can do full page.

Firefox screenshot save visible option

Let’s say if we click on Save visible, we can see that it does take a screenshot of what was visible (refer above image)

It doesn’t take a screenshot that includes the browser tabs or anything else that’s going on in your computer.
It just gets the exact webpage that’s inside the viewport.

If we click on Save full page, we can see that it does take a screenshot of the entire webpage for this really beautiful website.

This is really helpful for those of us who design or build websites.

You can also drag and pick the part of the webpage that you wish to capture (refer image below)

Mess around with it until you get what you want, and then save or copy your screenshot.

Another way to pick something is to hover over elements on the page.

In the below image, there’s sort of the wrapper, probably that goes around the text or you can even hover over an image to get a wrapper

This is a really great way to get just part of the page without having to fuss with crop marks and try to get it exactly to the edges of the pixels.

Select a region to take screenshot

Firefox knows what a DOM is, it knows what all these elements are. It can help use those elements to grab exactly the part that you want.

And after selecting a specific part of webpage we have three choices :

  1. We can download the file (which is going to put our screenshot image file in my Downloads folder)
    or
  2. We can copy this image (which means the file is not going to end up on my computer at all and I can go over to some sort of chat window or whatever and I can just paste it quickly)
    In the image below at right side bottom corner you can check the popup displayed which says that your screenshot has been copied to clipboard.
  3. Cancel: To cancel your selection, click on the Cancel icon

If this post was helpful, please like and share below to show your support !

My apps on Firefox Maketplace

I have developed a Mobile and Web Application named  Health Tracker which tells number of calorie’s burned, gives you fitness tips, weight loss tips and low calorie food. This app is launched on Firefox Marketplace on September 21

It is available for free download on Web, Tablet, FirefoxOS phones and Android.

This app have more than 500 downloads

screencapture-marketplace-firefox-statistics-app-health-tracker-1520179553647

Download Link: https://marketplace.firefox.com/app/health-tracker/

prasad seth firefox

prasad seth firefox

My Another application is Easy Text to Speech  which is intended to assist deaf and hearing impaired people is available on Firefox Marketplace.
Application supports 42 languages. Build to help the Society.

This app have 1k+ downloads within a week.

This app got launched on Firefox Marketplace on January 3

It is available for free download on Web, Tablet, FirefoxOS phones and Android.

This app have more than 24k+ downloads

screencapture-marketplace-firefox-statistics-app-easy-text-to-speech-1-1520179504396

Download Link: https://marketplace.firefox.com/app/easy-text-to-speech-1/

prasad seth firefox

prasad seth firefox