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About Linux

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  1. 2. <ul><li>is a Unix-like computer operating system </li></ul><ul><li>one of the most prominent examples of free software and open source development: typically all underlying source code can be freely modified, used, and redistributed by anyone </li></ul><ul><li>The name &quot; Linux &quot; comes from the Linux kernel, started in 1991 by Linus Torvalds </li></ul>
  2. 3. <ul><li>Predominantly known for its use in servers </li></ul><ul><li>supported by corporations such as Dell , Hewlett-Packard , IBM , Novell , Oracle Corporation , Red Hat , and Sun Microsystems </li></ul><ul><li>used as an operating system for a wide variety of computer hardware, including desktop computers, supercomputers, video game systems, such as the PlayStation 2 and PlayStation 3, several arcade games, and embedded devices such as mobile phones, routers, wristwatches, and stage lighting systems </li></ul>
  3. 4. <ul><li>Unix operating system was conceived and implemented in the 1960s and first released in 1970 </li></ul><ul><li>Its wide availability and portability meant that it was widely adopted, copied and modified by academic institutions and businesses </li></ul><ul><li>The GNU Project, started in 1984, had the goal of creating a &quot; complete Unix-compatible software system &quot; made entirely of free software </li></ul>
  4. 5. <ul><li>MINIX , a Unix-like system intended for academic use, was released by Andrew S. Tanenbaum in 1987 </li></ul><ul><li>In 1991, Linus Torvalds began to work on a non-commercial replacement for MINIX while he was attending the University of Helsinki </li></ul><ul><li>This eventually became the Linux kernel </li></ul><ul><li>Linux vendors and communities combine and distribute the kernel, GNU components, and non-GNU components, with additional package management software in the form of Linux distributions </li></ul>
  5. 6. Developed the linux kernel in 1991
  6. 7. <ul><li>Today Linux is used in numerous domains, from embedded systems to supercomputers, and has secured a place in server installations with the popular LAMP application stack </li></ul><ul><li>LAMP </li></ul><ul><li>( L inux, A pache, M ySQL, P erl/ P HP/ P ython) </li></ul>
  7. 8. <ul><li>Linux is a modular Unix-like operating system </li></ul><ul><li>uses a monolithic kernel, the Linux kernel, which handles process control, networking, and peripheral and file system access </li></ul>
  8. 9. <ul><li>Linux can be controlled by </li></ul><ul><ul><li>text-based command line interface (CLI) </li></ul></ul><ul><ul><li>graphical user interface (GUI) (usually the default for desktop) </li></ul></ul><ul><ul><li>through controls on the device itself (common on embedded machines) </li></ul></ul><ul><ul><li>On desktop machines, KDE , GNOME and Xfce are the most popular user interfaces </li></ul></ul>
  9. 10. <ul><li>The Linux market is growing rapidly, and the revenue of servers, desktops, and packaged software running Linux is expected to exceed $35.7 billion by 2008 </li></ul><ul><li>IDC's report for Q1 2007 says that Linux now holds 12.7% of the overall server market </li></ul>
  10. 11. <ul><li>Proponents and analysts attribute the relative success of Linux to its: </li></ul><ul><ul><li>security </li></ul></ul><ul><ul><li>reliability </li></ul></ul><ul><ul><li>low cost </li></ul></ul><ul><ul><li>and freedom from vendor lock-in </li></ul></ul>
  11. 12. <ul><li>Frictional cost of switching operating systems </li></ul><ul><li>Lack of support for certain hardware and application programs designed for Microsoft Windows </li></ul><ul><ul><li>recently Google has begun to fund Wine , which acts as a compatibility layer, allowing users to run some Windows programs directly under Linux </li></ul></ul>
  12. 13. <ul><li>A 2001 study of Red Hat Linux 7.1 found that this distribution contained 30 million source lines of code. </li></ul><ul><li>Using the Constructive Cost Model , the study estimated that this distribution required about eight thousand man-years of development time. </li></ul><ul><li>If all this software had been developed by conventional proprietary means, it would have cost about 1.08 billion dollars (year 2000 U.S. dollars) to develop in the United States. </li></ul>
  13. 15. <ul><li>community developed operating system that is perfect for laptops, desktops and servers most popular of the many Linux distributions </li></ul><ul><li>free of charge </li></ul><ul><li>Everything you need on one CD </li></ul><ul><li>Ubuntu's goals include providing an up-to-date yet stable operating system for the average user and having a strong focus on usability and ease of installation </li></ul>
  14. 16. <ul><li>sponsored by Canonical Ltd , owned by South African entrepreneur Mark Shuttleworth </li></ul>
  15. 17. <ul><li>The name of the distribution comes from the African concept of ubuntu which may be rendered roughly as &quot; humanity toward others &quot;, &quot; we are people because of other people &quot;, or &quot; I am who I am because of who we all are “ </li></ul><ul><li>is free software and can be shared by any number of users </li></ul>
  16. 18. <ul><li>releases new versions every six months, and supports those releases for 18 months with daily security fixes and patches to critical bugs </li></ul><ul><li>LTS (Long Term Support) releases are supported for 3 years for desktops and 5 years for servers </li></ul><ul><li>The most recent version, Ubuntu 8.04 ( Hardy Heron ) , was released on 24 April 2008 </li></ul><ul><li>The next major version will be 8.10 ( Intrepid Ibex ) , scheduled for release in October 2008. </li></ul>
  17. 19. <ul><li>Productivity tools </li></ul><ul><li>Browsing </li></ul><ul><li>Photos </li></ul><ul><li>Music and video </li></ul><ul><li>Office applications </li></ul><ul><li>Accessibility </li></ul>
  18. 20. <ul><li>Email </li></ul><ul><li>Calendar </li></ul><ul><li>Contacts. </li></ul><ul><li>Tasks </li></ul><ul><li>Instant messaging </li></ul><ul><ul><li>Pidgin IM is the extremely popular open source messaging tool </li></ul></ul>
  19. 21. <ul><li>Rhythmbox Music and Totem video players </li></ul><ul><ul><li>Stream live radio </li></ul></ul><ul><ul><li>Access (truly) free music stores </li></ul></ul><ul><ul><li>Plug in your devices </li></ul></ul><ul><ul><li>Share your music across a network </li></ul></ul><ul><ul><li>Video </li></ul></ul>
  20. 22. <ul><li>Photos with F-Spot manager </li></ul><ul><ul><li>Organise your photos (but in a fun way) </li></ul></ul><ul><ul><li>Export to your favourite online photo gallery </li></ul></ul><ul><ul><li>Edit Your Photos </li></ul></ul>
  21. 23. <ul><li>Firefox 3 (Beta 5) </li></ul><ul><ul><li>Enhanced bookmarking, tagging and history </li></ul></ul><ul><ul><li>Safer than ever </li></ul></ul><ul><ul><li>Wonderful world of add-ons </li></ul></ul><ul><ul><li>Improved address prompting in location bar </li></ul></ul><ul><ul><li>No more pop-ups, forced add-ons and other irritations </li></ul></ul>
  22. 24. <ul><li>Office tools with and more! </li></ul><ul><li>Word processing </li></ul><ul><ul><li>Writer is for anything from writing a quick letter to producing an entire book. </li></ul></ul>
  23. 25. <ul><li>Spreadsheet </li></ul><ul><ul><li>a tool to calculate, analyze, and present your data in numerical reports or charts. </li></ul></ul>
  24. 26. <ul><li>Presentation </li></ul><ul><ul><li>Impress is an easy, and powerful tool for creating effective multimedia presentations. </li></ul></ul>
  25. 27. <ul><li>Orca Assistive Technologies For sight impaired users </li></ul><ul><li>Slow Keys and Gesture Support </li></ul>