OPEN SOURCE OPERATING SYSTEM

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					  OPEN SOURCE
OPERATING SYSTEM


          SUBMITTED BY:
          JYOTI BATRA
          SIMRAN PREET KAUR
          NISHA SHARMA
          NIRMAL DEEP KAUR
         OPEN SOURCE
Open source software is often, but not always,
totally free of acquisition. Open source software
refers to applications developed in which the user
can access and alter the "source" code itself.
(source code is the code of the program written in
a certain programming language).
          OPERATING SYSTEM
Operating system is the software that you use
to operate your PC. If the operating system
is platform dependent, platform information
will belong in the hardware section.

 Examples:
• Linux OS
• Windows
      ADVANTAGES OF OS
 Free Redistribution
 Reduced dependence on software vendors
 Easier to customize
 Higher level of security
 Use of System Resources
   DISADVANTAGE OF OS
 Unanticipated Efforts
 Lack of coordination
 Inadequate technical support
 Customization
       SELECTING OF OS
 Intended use
 Commercial support
 Hardware compatibility
 Software compatibility
 Community
      OS SECURITY APPs
 ClamAV
 ModSecurity
 Eraser
 Wipe
 Disk Cleaner
 Crypt etc.
            LICENSING TERMS
   GPL License required.
   All code, whether developed cooperatively or
    separately, licensed on the same terms.
    Use of copyright law to restrict downstream
    “enclosure” . This is the distinction between open
    source and public domain software.
                   LINUX
A very popular open source operating system that
runs on a variety of hardware platforms . Linux is
widely deployed as a server OS . Linux is a multi-
tasking, multiuser operating system .Although
modified by numerous people.
                LINUX VARIANTS
 SlackWave Linux
 Ubuntu Linux
 Kubuntu Linux
 Debian Linux
 JAD Studio
 Mepis Linux
           LINUX FEATURES
 Costs Less
 Stable
 Reliable
 Extremely Powerful
      APPLICATIONS OF LINUX
 Firefox
 Miro
 Mplayer
 Open Office
 Paint.Net
 Easy Tag
 OpenGoo
Architecture of Linux Kernel
             System Call Interface
        System Call Interface


          Process          Virtual File
        Management           System


         Memory             Network
        Management           Stack


          Arch         Device Drivers
        Architecture of Linux
         Operating System
                  User Applications        User
                                          Space

                       GNU C Library


 GUI
                 System Call Interface
Linux

                                          Kernel
                        Kernel
               Architecture Kernel Code   Space

               Architecture Kernel Code
LINUX vs. WINDOWS
       LINUX                 WINDOWS

 Free of Cost                Cost
 Faster Upgrading            Slower Upgrading
 Backward Compatibility      Forward Compatibility
 Multi-User Support          Multi-User support
 Difficult for Programmer    Easy for Programmer
 Other Open Source Software
  Web Browser :
 Firefox and Thunderbird
 Mozilla


  Digital Collections Management
• Dspace
• Greenstone
             CONCLUSION
OSS operating systems are free to download,
but the time it takes to learn about them can
 be costly.
“When is it best to use Linux and when
should some other operating system be
 preferred?”
 It all depends on the user
QUESTIONS?

				
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posted:10/12/2011
language:English
pages:19