4 Assets and their Vulnerabilities 2 1.5 Protection 3 1.6 Intruders 3 1.7 Malicious 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
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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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monumental computing development. DOS had been bought from a Seattle hacker by Bill Gates‚ for a sum of $50‚000 a small price for an operating system that had managed sneak its way across the globe due to a clever marketing strategy. Apple’s OS and UNIX were both available‚ though the cost of running either was far greater than that of running DOS. Enter MINIX‚ an operating system developed from the ground up by Andrew S. Tanenbaum‚ a college professor. MINIX was part of a lesson plan used to teach
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Kaashoek‚ Morris Chapter 7 File system data structures The disk driver and buffer cache (Chapter 6) provide safe‚ synchronized access to disk blocks. Individual blocks are still a very low-level interface‚ too raw for most programs. Xv6‚ following Unix‚ provides a hierarchical file system that allows programs to treat storage as a tree of named files‚ each containing a variable length sequence of bytes. The file system is implemented in four layers: ------------pathnames ------------directories ------------inodes
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Memory Management Systems of BSD‚ Windows‚ and Linux Gaurang Khetan Graduate Student‚ Department of Computer Science‚ University of Southern California‚ Los Angeles‚ CA. gkhetan@usc.edu December 16‚ 2002 Abstract This paper is a study of memory management systems of an operating system. We begin with a brief introduction to memory management systems and then we compare the memory management systems of reallife operating systems - BSD4.4‚ Windows 2000 and Linux 2.4 1 Introduction based
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and disadvantages of using UNIX within Riordan Manufacturing organization. Scope Team B is to: a) study Riordan’s current telephone and data networks‚ b) develop recommendations that‚ if followed‚ will improve the efficiency of Riordan’s systems‚ c) recover/reuse operational budgets to minimize conversion expenses‚ and d) complete the project within budget‚ schedule constraints‚ and communicate all the tasks involved in the project. Objectives The objective of this Linux critique is to address the
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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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Abstract This paper is a 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
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convenient. They will have you enjoying your food just as fast as you can pay the cashier. On the other hand‚ though it is not fine dining but that could be your second choice. You could go to one of the finer restaurants such as The Washington Inn. Here‚ service is everything‚ speed is not. A relaxing evening is all that awaits you. So would you rather have a diet coke or a nice glass of say‚ White Zinfandel. The choice is yours. Eating out at a fine dining restaurant is not just a decision‚ but
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Topic: Comparing the security of Windows 7 to a Linux based operating system General Purpose: To inform Specific Purpose: At the end of my speech‚ my audience will be able to differentiate the two operating systems security. Central Idea: Comparing the security of Windows 7 to a Linux based operating system Introduction: Good evening‚ I am here tonight to explain the very basic securities of two very different operating systems. Windows 7 has been out for a couple years now and has what some
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