Applications of the linux

we know that linux is an open source operating system so based on application we can modify the kernel if we want the shorter kernel for shorter devices we just remove unwanted directories and if it is the huge working device which is of complex application then we use all the directories and also add some additional directories too........

We use linux in EMBEDDED SYSTEMS that means we use it in day to day life in our each and every equipment e.g: phones, ipods, smartphones etc

Other applications of linux are :

Linux is no lightweight. The 10 fastest supercomputers, led by the K Computer in Kobe, Japan, all run Linux. Of the top 500 supercomputers, 91 percent run Linux and only a little more than 1 percent run Windows. Perhaps the world’s most famous supercomputer, IBM’s Watson, skunked Jeopardy!’s top performers in a TV showdown earlier this year. Watson runs on Linux.

The U.S. Army trusted the security of Linux enough to weave it into the command and control system to provide timely and accurate information to soldiers in Iraq. “When we rolled into Baghdad, we did it using open source

 In some ways, Linux made cloud computing possible, and cloud-computing cemented its dominance. Today, Linux is such a basic foundation of the computing landscape that it’s easy to forget how revolutionary it seemed at the time. To computer-industry strategists in the 1990s, it sounded nuts. They made money by getting businesses to buy their computers. Then the buyers had to keep paying more each year for software and updates that ran only on their systems.

As the students graduated into jobs at computer companies and in corporate data centers, they continued to use Linux for their own projects.

In 2001 IBM announced it would support Linux and committed $1 billion to the effort, giving big business and big government assurance that Linux was reliable.

Embedded devices

Home screen displayed on Android 2.3 "Gingerbread" Due to its low cost and ease of customization, Linux is often used in embedded systems. Android—based on a modified version of the Linux kernel—has become a major competitor of Nokia's older Symbian OS, found in many smartphones. During the third quarter of 2010, 25.5% of smartphones sold worldwide used Android (with all Linux variants forming 27.6% of the total during that time. Cell phones and PDAs running Linux on open-source platforms became more common from 2007; examples include the Nokia N810, Openmoko's Neo1973, and the Motorola ROKR E8. Continuing the trend, Palm (later acquired by HP) produced a new Linux-derived operating system, webOS, which is built into its new line of Palm Pre smartphones. The popular TiVo digital video recorder also uses a customized Linux, as do several network firewalls and routers from such makers as Cisco/Linksys. The Korg OASYS, the Korg KRONOS, the Yamaha Yamaha Motif XS/Motif XF music workstations, Yamaha S90XS/S70XS, Yamaha MOX6/MOX8 synthesizers, Yamaha Motif-Rack XS tone generator module, and Roland RD-700GX digital piano also run Linux. Linux is also used in stage lighting control systems, such as the WholeHogIII console

Embedded device are used all over the world in day to day life so linux is being used in those devices and we can say that linux is giving our requirements of our whole life isn't it .