Linux Presentation
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The presentation introduces Linux, a unix-like operating system created by Linus Torvalds in 1991, known for its multi-user and multitasking capabilities and its open-source nature. It highlights the historical context of operating systems, the architecture of Linux, and its many applications, including support for various hardware and software. Additionally, it discusses the advantages of using Linux, such as cost-effectiveness, security, and high performance across computing platforms.
Linux Presentation
- 3. Pronunciation of Linux (‘Leenooks’) This is LinusTorvalds’ original pronunciation, based on the pronunciation of his name in Swedish. (‘Linnuks’) This is now LinusTorvalds’ preferred pronunciation, as he considers closer to the original than . It also follows the pronunciation of the English word ‘linen’. (‘Lynuks’) The other major alternative is based on the pronunciation of the English version of ‘Linus’. It also happens to be the version I use.
- 4. What is Linux Linux is a generic term referring to Unix-like graphical user interface (GUI) based computer operating systems. It is Multi-user, Multitasking, Multiprocessor Has the X Windows GUI Coexists with other Operating Systems Runs on multiple platforms Includes the Source Code
- 5. Where is Linux? One of the most noted properties of Linux is where it can be used. Windows and OS X are predominantly found on personal computing devices such as desktop and laptop computers. Other operating systems, such as Symbian, are found on small devices such as phones and PDAs, while mainframes and supercomputers found in major academic and corporate labs use specialized operating systems such as AS/400 and the Cray OS.
- 6. HISTORY OF LINUX The History of Linux began in 1991 with the commencement of a personal project by a Finnish student, Linus Torvalds, to create a new free operating system kernel.Since then, the resulting Linux kernel has been marked by constant growth throughout its history. Since the initial release of its source code in 1991, it has grown from a small number of C files under a license prohibiting commercial distribution to the 3.10 version in 2013 with more than 16 million lines of source code under the GNU General Public License.
- 7. FOUNDER OF LINUX In sept 1991,while attending the University of Helsinki ,Torvalds became curious about operating systems and frustrated by the licensing of MINIX,which limited it to educational use only. He began to work on his own operating system which eventually became the Linux kernel. MR: Linus Torvalds
- 8. BEFORE LINUX In 80’s, Microsoft’s DOS was the dominated OS for PC . Apple MAC was better, but expensive . UNIX was much better, but much, much more expensive. Only for minicomputer for commercial applications .People was looking for a UNIX based system, which is cheaper and can run on PC . Both DOS, MAC and UNIX were proprietary, i.e., the source code of their kernel is protected . No modification is possible without paying high license fees.
- 9. Why is it significant? Runs on multiple hardware platforms Users like its speed and stability No requirement for latest hardware Powerful Licensed under GPL Vendors are distributors who package Linux It’s “free”
- 10. An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless.E.g.. Linux Operating System
- 11. Multi-user A multi-user operating system allows for multiple users to use the same computer at the same time and/or different times. Multiprocessing An operating system capable of supporting and utilizing more than one computer processor. Multitasking An operating system that is capable of allowing multiple software processes to run at the same time. Multithreading Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are
- 12. LINUX TODAY Linux has been used for many computing platforms • PC, PDA, Supercomputer,… Not only character user interface but graphical user interface is available Commercial vendors moved in Linux itself to provide freely distributed code. They make their money by compiling up various software and gathering them in a distributable format Red Hat, Slackware, etc
- 13. ADVANTAGE OF LINUX You don’t need to spend time and money to obtain licenses since Linux and much of its software come with the GNU General Public License. Linux doesn’t need to be rebooted periodically to maintain performance levels.Linux provides persistent high performance on workstations and on networks. Linux was developed by a group of programmers over the Internet and has therefore strong support for network functionality; client and server systems can be easily set up on any computer running Linux.Linux can be used for high performance server applications, desktop applications, and embedded systems. It runs all common Unix software packages and can process all common file formats.
- 14. ADVANTAGE OF LINUX The large number of Linux distributions gives you a choice. Each distribution is developed and supported by a different organization.Most Linux distributions come with user-friendly installation and setup programs. Linux continues work well even when the hard disk is almost full. Linux is designed to do many things at the same time. Linux is one of the most secure operating systems. “Walls” and flexible file access permission systems prevent access by unwanted visitors or viruses.
- 16. Linux System Architecture is consists of following layers: Hardware layer - Hardware consists of all peripheral devices (RAM/ HDD/ CPU etc). Kernel - Core component of Operating System, interacts directly with hardware, provides low level services to upper layer components. Shell - An interface to kernel, hiding complexity of kernel's functions from users. Utilities - Utility programs giving user most of the functionalities of an operating systems. LINUX SYSTEM ARCHETECTURE
- 17. Applications of Linux AS the Linux is the OS, it provides lot of-applications. Some of them given below: 1)Text And Word Processing Applications Star Office is Text and word application-instead of WordPad and notepad. 2) Programming Language There is a wide verity of Programming and- scripting languages and tools available for Linux. 3)X-windows X-windows is a highly flexible and-configurable GUI environment that run on Linux as-well as almost UNIX System.
- 18. 4) Internet tool It supports Netscape as well as Mosaic It provides wide and full range of software neededto create internet server. It also provide the complete network support toconnect the internet. 5) Data bases Today Oracle, Sybase and Informix all offerrelational data base provides for Linux. 6) Dos and Windows Capability Software Linux can be made to run DOS software with highdegree of stability and compatibility. Applications of Linux
- 19. Acquiring and using Linux There are quite a few ways to obtain a Linux distribution. 1. One way is to go to the distributors website and download the linux distribution of our choice. For example, If you want to download a. Mandrake, the go to http://www.mandriva.com/. b. SUSE Linux Enterprise Server 9, go to http://www.novell.com/linux/download_linux.html. 2. Other way is to obtain pre-burned copies of the Linux distribution we need from the distributor’s website or from sites like cheapISO.com – The price is of such distributions starts from less than Rs. 100/- – Some new computers have Linux as preinstalled.
- 20. Further Reference www.linux.com - News, Software, Documentation, Tutorials, etc. www.linuxhq.com - Another great Linux resource site. www.linuxjournal.com - The Monthly Magazine for Linux Community www.tldp.org - The Linux Documentation Project. Excellent help for beginners. www.userfriendly.org - Linux cartoon strips
- 21. Thank You...