Chapter 4 1. “reject the shell is like rejecting all gears except first in your car” – explain . (gear in the car is use to adjust its speed ‚ same as the shell in the operating system we cannot interact with the kernel and do something to the settings without it) 2. What is the use of options in the command?( Options determine how the command operates) 3. What is the use of arguments in the command?( arguments determine what it operates on) 4. Who develop “bourne shell”?( Stephen L. Bourne) 5
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Components of an Operating System In order to perform the actions requested by the computer’s users‚ an operating system must be able to communicate with those users. The portion of an operating system that handles this communication is often called the user interface. Older user interfaces‚ called shells‚ communicated with users through textual messages using a keyboard and monitor screen. More modern systems perform this task by means of a graphical user interface (GUI) in which objects to be
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briefly and concisely 1. List 5 types of operating systems with their primary functionality area and do they cater multiple types 2. Based on your knowledge and current state of development are OS-less computer system possible or not. 3. On early computers‚ every byte of data read or written was handled by the CPU (i.e. there was no DMA). What implications does this have for multiprogramming? 4. A portable operating system is one that can be ported from one system architecture to another without any modification
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Overview of Functions of an Operating System Norman Matloff University of California‚ Davis ©2001‚ N. Matloff May 30‚ 2001 Contents 1 Introduction 1.1 It’s Just a Program! 1.2 What Is an OS for‚ Anyway? 1.3 A Bit More on System Calls 1.4 Making These Concepts Concrete: Commands You Can Try Yourself 2 System Bootup 3 Application Program Loading 4 Timesharing 4.1 Many Processes‚ Taking Turns 4.2 Example of OS Code: Linux for Intel CPUs 4.3
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Chapter 1 BASIC ELEMENTS At a top level‚ a computer consists of processor‚ memory‚ and I/O components‚ with one or more modules of each type. These components are interconnected in some fashion to achieve the main function of the computer‚ which is to execute programs. Thus‚ there are four main structural elements: • Processor: Controls the operation of the computer and performs its data processing functions. When there is only one processor‚ it is often referred to as the central processing unit
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1.The four major functions of an operating system are: Managing programs Managing Memory Handling input and output User Interface Managing programs Managing programs is one of the functions that are most dramatic effect to the operating systems overall quality. There are many different systems that are used for managing programs. You have single tasking‚ in which you can run only one program application at a time. Multi-tasking in which in the normal operating system allows a single user to
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Operating System UNIT - 1 Roadmap • What is an Operating System? • • • • • • • • Operating System Objectives/Functions The Evolution of Operating Systems Major Achievements Structuring methods Design of API’s Interrupts Device Organization User/System state Transition What is an Operating System? • A program that acts as an intermediary between a user of a computer and the computer hardware. OR • A program that controls the execution of application programs. • Kernel – the one program
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Running head: KERNEL DISTRIBUTIONS Kernel Distributions of Linux Diego Avendano AUI Online KERNEL DISTRIBUTIONS Kernel Distributions of Linux Every operating system needs a way to communicate with the user‚ the hardware and software. To accomplish these tasks‚ every operating system uses kernel and shell. Both kernel and shell work together forming a communication bridge between the user and the operating system. Linux allows the user to create its own kernel‚ making it easier to run the
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UUM COLLEGE OF ARTS AND SCIENCES UNIVERSITI UTARA MALAYSIA No. Information on Course 1. Course Name : OPERATING SYSTEM 2. Course Code: STIK2044 3. Name(s) of Academic Staff: HATIM MOHAMAD TAHIR ROOM: SOC3070 OFF:928 5193 EMAIL: HATIM@UUM.EDU.MY FB: HATIM 4. Rationale for the inclusion
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publications and other professional conferences and journals. He is a coauthor of the textbook Database System Concepts. He has also written Op-Ed articles for the New York Times‚ the Boston Globe‚ and the Hartford Courant‚ among others. Peter Baer Galvin is the chief technologist for Corporate Technologies (www.cptech.com)‚ a computer facility reseller and integrator. Before that‚ Mr. Galvin was the systems manager for Brown University’s Computer Science Department. He is also Sun columnist for ;login:
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