"Unix" Essays and Research Papers

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Introduction to the Unix Operating System Unix is the most widely used computer Operating System in the world. Unix has been ported to run on a wide range of computers, from handheld personal digital assistants to inexpensive home computing systems to some of the worlds' largest super-computers. Unix is a multiuser, multitasking operating system, which enables many people to run many programs on a single computer at the same time. After more than three decades of use, Unix is still regarded...

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File Management in Unix

File Management in UNIX Kyle Allen Richmond, Sr. POS 355 / Introduction to Operating Systems University of Phoenix When it comes to UNIX systems all user data is organized and stored in files. These files are subsequently organized into a management structure comprising of directories and sub-directories. Much like forest and organizational units when it comes to active directory, UNIX also has the directories and sub-directories organized into a tree-like...

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Unix: Discussion Questions

POS420: DQ’s for Week 1 Discussion Question 1 - Week 1 (Saturday): How old of an operating system is Unix? The story of how UNIX came to be is a long, but interesting tale. During the mid-1960’s, the first multi-user operating system called Compatible Time-Sharing System (CTSS) was created by Fernando Corbato at the MIT Computation Center. Although CTSS was highly influential for its time, it eventually failed, but not before a second generation operating system called Multiplexed...

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Unix- Operating Systems

The uniqueness of UNIX The features that made UNIX a hit from the start are: • Multitasking capability • Multi-user capability • Portability • UNIX programs • Library of application software • Security 1. Multitasking Capability Many computers do just one thing at a time, as anyone who uses a PC or laptop can attest. Try logging onto your company's network while opening your browser while opening a word processing program. Chances are the processor will freeze for a few seconds while...

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Unix File Protection

UNIX offers a file protection system that is straightforward and simple to use. However, many people are not aware of the value of this powerful mechanism. A secure environment is achieved not only by the operating system, but also through vigilant user and administrative practices. There are many schemes and mechanisms used in the UNIX operating system, as well as some simple tricks that are available to give the kind of file protection administrators want. For the purpose of this paper, a company...

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Unix System Programming

TECHNOLOGY CHANNASANDRA, BANGALORE - 61 UNIX SYSTEM PROGRAMMING NOTES FOR 6TH SEMESTER INFORMATION SCIENCE SUBJECT CODE: 06CS62 PREPARED BY RAJKUMAR Assistant Professor Department of Information Science DIVYA K 1RN09IS016 6th Semester Information Science and Engineering 1rn09is016@gmail.com Text Books: 1 Terrence Chan: Unix System Programming Using C++, Prentice Hall India, 1999. 2 W. Richard Stevens, Stephen A. Rago: Advanced Programming in the UNIX Environment, 2nd Edition, Pearson Education...

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UNIX® and Linux® Comparison Matrix - 5 Marks

University of Phoenix Material Unix® and Linux® Comparison Matrix - 5 Marks 1. Name three versions of Unix 1. AT&T (System V Release) Versions 2. BSD (Berkeley Software Distribution) from the University of California at Berkeley 3. XENIX from Microsoft 2. Name three versions of Linux 1. Canonicals’ Ubuntu 2. Novell’s openSUSE 3.Red Hat’s Fedora 3. Describe 3 major differences between Unix and Linux 1. The difference between UNIX and Linux is that UNIX trademark is specific to systems...

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POS 355 Unix File Management

 Unix File Protections ABSTRACT Unix is a multifunctional platform capable of handling several users accessing the same applications and files at once. It accomplishes this by setting up a permissions hierarchy and assigning users into groups. As multifunctional as it is, several problems still exist. For one, it has a command line interface. There is no graphical user interface. Second, privilege changes are made either one by one or all...

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Intro to Unix Project 2

Intro to UNIX CS126 Denver, Colorado 10/17/11 1- Description of filters: Is a small and usually specialized program in UNIX-like operating systems that transform plain text data in some meaningful way be used other filters and pipes to form a series of operations that produce highly specific results. The three standard files every filter uses are * Standard input. * Standard output. * Standard error. 2- Description of pipes: The symbol | is the Unix pipe symbol...

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Unix Architecture

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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