Definition of Linux:Linux (i/ˈlɪnəks/ lin-əks[6][7] or /ˈlɪnʊks/ lin-uuks)[8][9][10] is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of Linux is the Linux kernel, an operating system kernel first released 5 October 1991 by Linus Torvalds.[11][12]Linux was originally developed as a free operating system for Intel x86-based personal computers. It has since been ported to more computer hardware platforms than any other operating system. It is a leading operating system on servers and other big iron systems such as mainframe computers and supercomputers:[13][14][15][16] more than 90% of today's 500 fastest supercomputers run some variant of Linux,[17] including the 10 fastest.[18] Linux also runs on embedded systems (devices where the operating system is typically built into the firmware and highly tailored to the system) such as mobile phones, tablet computers, network routers, televisions[19][20] and video game consoles; the Android system in wide use on mobile devices is built on the Linux kernel.
http://www.pcworld.com/article/259229/dells_ubuntu_laptop_program_enters_beta_blows_away_expectations.html
Windows 8 is a completely reimagined Windows. You can code once and have a great app experience that scales across devices from tablets to all-in-one PCs, from 10" to 27" screen sizes. The new Windows Store provides flexibility for selling your app and higher profit potential than the Apple App Store – with an 80% revenue share when you reach $25,000 USD or more in total sales. Unlike Cocoa Touch, which only use Objective C, the Windows Runtime gives you the flexibility to build native apps using C#, C++ and JavaScript. It’s easy to get started on Windows 8. Apps are front and center The entirely new start screen puts your app at the center of the Windows 8 experience. With live tiles and notifications, people stay connected and engaged with your app without having to launch it . With app contracts users are able to seamlessly search across and share content between unrelated apps. You don’t need to know anything about the target app other than its declared support for the target contract – it just works, creating engagement opportunities outside of just launching the app.Introducing the Windows StoreNot only does Windows 8 let you keep more money per download than the App Store with an 80% revenue for total sales over $25,000 USD, Windows 8 and the Windows Store also make it simple for millions of customers to find, try, and buy your app from practically anywhere in the world. The Windows Store makes it easy to distribute, update, and get paid for the apps that you develop.