Some Basic UNIX Commands NB*”Rm” The UNIX operating system has for many years formed the backbone of the Internet‚ especially for large servers and most major university campuses. However‚ a free version of UNIX called Linux has been making significant gains against Macintosh and the Microsoft Windows 95/98/NT environments‚ so often associated with personal computers. Developed by a number of volunteers on the Internet such as the Linux group and the GNU project‚ much of the open-source software
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UNIX versus Windows Compare and Contrast Analysis of Solaris 10 and Windows 2003 Team "A" University of Phoenix Online POS 420 Introduction to UNIX Carlie VanWilligen February 20‚ 2007 Compare and contrast of operating systems There are many operating systems in use today. There are basically three types of operating systems Windows‚ Macintosh‚ and UNIX/Linux. In this paper we are going to compare and contrast Solaris and Windows Server 2003. Solaris is part of the UNIX family and
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Unix * (officially trademarked as UNIX‚ sometimes also written as Unix with small caps) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs‚ including Ken Thompson‚ Dennis Ritchie‚ Brian Kernighan‚ Douglas McIlroy‚ and Joe Ossanna. Today’s Unix systems are split into various branches‚ developed over time by AT&T as well as various commercial vendors and non-profit organizations. The Open Group‚ an industry standards consortium‚ owns the “Unix”
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An introduction to Android What is Android? Android brings Internet-style innovation and openness to mobile phones. Android delivers a complete set of software for mobile devices: an operating system‚ middle ware and key mobile applications. The Android Software Development Kit (SDK) is now available. Open Android was built from the ground-up to enable developers to create compelling mobile applications that take full advantage of all a handset has to offer. It was built to be truly open
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Explain the purpose of an operating system Process Management A multitasking operating system may give the appearance that a lot of processes are running concurrently/simultaneously‚ this is not true as only one process can be executing at any one time on a single-core CPU‚ unless on a multi-core or similar technology. Processes are often called tasks in embedded operating systems. The function of the task or process is something that takes up time‚ as opposed to memory‚ which is ’something that
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Software 3 1.8 Trusted Systems 4 1.9 Protection and Security Design Principles 4 1.10 The Unix/Linux Security Model 5 1.10.1 Properties of the Unix Superuser 5 1.10.2 The Unix Security Model — Groups 6 1.10.3 Protection For Unix Files and Directories 6 1.10.4 The Meaning of Permissions 6 1.10.5 Changing File and Directory Permissions 7 1.11 Access control lists (ACLs) 8 1.11.1 Access Tokens and User Rights 8 1.11.2 The Discretionary Access Control List 8 1.11.3 The System Access Control List
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Android Operating System Android is an open-source software stack for mobile phones and tablet devices. Android was originated by a group of companies known as the Open Handset Alliance‚ led by Google. Today‚ many companies have collaborated in the creation and development of the Android operating system. The members of the OHA contributed in the form of allocating significant engineering resources to improve Android and bring Android devices to Market. (Open Handset Alliance‚ n.d.) According to
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Software Systems CA History and development of Operating Systems Table of contents Page 1 : Contents Page 2 : Introduction Page 2-3 : History of Operating Systems Page 3 : Timesharing and Multiprogramming 1960s Page 4 : The personal computer era Page 4-5 : The Significant types of Operating Systems Page 5-6 : The Functions of Operating Systems Page 7 : Why OS is so critical Page 7 : Conclusion Page 8 : Bibliography Introduction "Operating Systems have earned the reputation for being
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changing an operating system......... An operating system is the program that manages all the application programs in a computer system. This also includes managing the input and output devices‚ and assigning system resources. Operating systems evolved as the solution to the problems that were evident in early computer systems‚ and coincide with the changing computer systems. Three cycles are clear in the evolution of computers‚ the mainframe computers‚ minicomputers and microcomputers‚ and each
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1. In a multiprogramming and time sharing environment‚ several users share the system simultaneously. This situation can results in various security problems. a. What are the two such problems? Ans: The two problems in Multiprogramming and time sharing environment are Stealing or copying a user’s files; Writing over another program’s (belonging to another user or to the OS) area in memory; Using system resources (CPU‚ disk space) without proper accounting; Causing the printer to mix output by
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