Where Did UNIX Come From and Why Are There Different Versions Of UNIX? The first efforts at developing a multi-user‚ multi-tasking operating system were begun in the 1960’s in a development project called MULTICS. While working for Bell Telephone Laboratories in 1969 and 1970‚ Ken Thompson and Dennis Ritchie began to develop their own single-user‚ multi-tasking small operating system and they chose the name UNIX. Their initial goal was simply to operate their DEC PDP machines more effectively.
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Linux 101 Hacks www.thegeekstuff.com Table of Contents Introduction........................................................... 7 About the Author.................................................... 8 Copyright & Disclaimer............................................ 9 Version.............................................................................. 9 More eBooks from The Geek Stuff..........................10 Bash 101 Hacks.........................................................
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Installing SharePoint Server 2010 x64 on Windows Server 2008 r2 Minimum Hardware System Requirements: 80GB Hard disk 4 core Processor (64bit) 4GB of RAM (Evaluation) / 8GB of RAM (Production) Software Requirements: Windows Server 2008 r2 Microsoft SQL Server 2008 r2 Enterprise x86 x64 Microsoft SharePoint Server 2010 x64 Microsoft SharePoint Server 2010 Prerequisite files (to be downloaded): Microsoft Filter Pack 2.0 Microsoft SQL Server 2008 Analysis Services ADOMD.NET Microsoft Sync
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between Linux and Windows. Which one provides better control and in which conditions? Ans: Access Control techniques in windows are as: Window contains of two types of ACLs Discretionary ACL and a System ACL. Windows files have an owner mean that the creator of the file. In window owner is not a group which they belong. An access right in window doesn’t give importance to owner. File in the window have two main categories either it require the explicit list of people and groups or get it from the parent
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NT1430 Linux Networking: Study Guide Wed 21-November-2012 Linux Commands: Know these commands and what they do: • Directory and list commands o ls‚ ls –l o pwd o cd / o cd and cd~ (hint: both take you to your home directory) o cd .. (takes you up one directory • Know what cp and mv do and how to use them • File viewing commands: o cat o less and more (one page at atime) o vi and view o tail (shows the last 10 lines of a file) o head (shows the top 10 lines) • chmod for changing permissions
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UNIX File Access In order to understand how to control access to a file in a system that supports 5‚000 users to 4‚990 of those users‚ a basic understanding of the file permissions of a file on a UNIX system is necessary. A user has the ability to perform three basic actions to a file‚ read‚ write and execute. These three actions will be represented by r‚ w‚ and x respectively. A UNIX system uses a combination of these characters to control the file permissions. The first three characters represent
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general overview of Unix operating system. It starts by presenting a brief history of the early development of Unix. It concentrates on main aspects of Unix operating system. Key concepts covered are interactive multi-user operating systems‚ the design objectives of Unix‚ file-store organization‚ text processing and programming‚ the role of C programming language with regard to portability and reliable system software‚ process control (signals and fork)‚ error logging and recovery from system failures
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Introduction Email is absolutely crucial in a business environment and now-a-days play an important role in the communication in an enterprise. Domain based‚ pure play‚ mailing solutions are a must for any business community and Linux is the ideal platform for providing this service. Its resilience and stability mean that you can be confident that your email infrastructure will be rock solid‚ irrespective of whether you have five email users‚ or five thousand. For an enterprise to run smoothly the
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UNIX ARCHITECTURE The architecture of UNIX is divided into three levels. On the outer crust reside the Application Programs and other utilities. At the heart of UNIX‚ on the other hand‚ is the Kernel‚ which interacts with actual hardware in machine language. The stream lining of these two modes of communication is done by the middle layer called Shell. Thus the three basic layers are:- ✓ HARDWARE ✓ KERNEL ✓ SHELL At the core is the physical
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Unix commands 6/27/12 10:24 AM Unix commands Note that there are thousands of commands available on a typical unix box. In bash‚ just hit the "Tab" key twice and say yes‚ to display the the commands currently available on your machine. A standard unix operating system lists currently thousands of commands. Type x to list all commands starting with x. The following list contains some of the more frequently used programs. Access Control exit - terminate a shell (see "man sh" or "man csh")
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