Shell Scripting Primer Contents Introduction 12 Organization of This Document 12 Before You Begin 14 Obtaining a Shell Prompt 14 In Mac OS X 14 In Other UNIX Variants or Linux Variants 15 In Windows 15 Familiarize Yourself With the Command Line 15 Tips for Shell Users 15 The alias Builtin 15 Entering Special Characters 17 Creating Text Files in Your Home Directory 17 In TextEdit 17 In pico or nano 18 Shell Script Basics 19 Shell Script Dialects 19 She Sells C Shells 21 Shell Variables
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(all information ls –l) Clears screen clear clear Closes prompt window exit exit Displays or sets date date date Deletes files rm rm thisfile.txt "Echoes" output on the screen echo echo this message Edits files with simple text editor vi vi thisfile.txt Compares the contents of files diff diff file1 file2 Finds a string of text in a file grep grep this word or phrase thisfile.txt Formats a diskette mke2fs (or mformat /sbin/mke2fs /dev/fd0 (/dev/fd0 is the Linux equivalent
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management paging and segmentation virtual memories[20%] I./O system and secondary storage structure [10%] Protection and security [10%] Introduction to multiprocessor and distributed operating systems. [20%] Case Studies: LINUX ‚ UNIX Operating System with SOLARIS and SCO-UNIX [15%] TEXT BOOKS 1. A Silberschatz and Peter B. Calvin‚ " Operating System Concepts" Addison Wesley Publishing Company 2. Dhamdhere‚ " Systems Programming & Operating Systems Tata McGraw Hill REFERENCES 1. Operating System
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which: 5. What’s the difference between the following commands? 6. Exactly what files would the following match up? Computer Science - General Computer Science POS 420 Week 1 UNIX® and Linux® Comparison Matrix Resources: University of Phoenix Material: UNIX® and Linux® Comparison Matrix Complete the UNIX® and Linux® Comparison Matrix located on your student website. See the Assignment 1 post in the Main forum or Course Materials forum for detailed instructions.
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language we now know as C. C’s power and flexibility soon became apparent. Because of this‚ the Unix operating system which was originally written in assembly language‚ was almost immediately re-written in C ( only the assembly language code needed to "bootstrap" the C code was kept ). During the rest of the 1970’s‚ C spread throughout many colleges and universities because of it’s close ties to Unix and the availability of C compilers. Soon‚ many different organizations began using their own versions
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on enterprise computing. It provided more than 1.3 Million UNIX based systems(HP-UX). The sales of HP were almost up to $10B in 1997 where the total market was estimated to be over $60B. ! ! HP was the lead supplier of UNIX based servers through the years 1993 to 1997. On the other hand‚ SUN Microsystems were also competing with HP for UNIX servers and were emerging strong in the market. By summer 1998‚ SUN was a leading UNIX server vendor with their own proprietary operating system SOLARIS
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describing the conventions used for the layout of a UNIX system. It has been made popular by its use in Linux distributions‚ but it is used by other UNIX variants as well. The Linux Standard Base (LSB) refers to it as a standard. In the FHS all files and directories appear under the root directory "/"‚ even if they are stored on different physical or virtual devices. Note however that some of these directories may or may not be present on a Unix system depending on whether certain subsystems‚ such
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programming features Conclusion References Comparative study of bourne‚ c‚ korn‚ and bash shells. 1. ABSTRACT This term paper compares the interactive properties of the four shell programs in the UNIX world. The comparison is based on the description of each shell. 2. Introduction Shell -is software that provide an interface for users of an operating system which provides access to the services of kernel. Many shells are available‚ either
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Unix VS. Windows Security Windows: Pros: File permissions (UAC) User account controls Antivirus to assist in the stopping of malware Supports many businesses related software’s and is used worldwide Cons: Infected account File permissions are vulnerable Antivirus is constantly required as well as updated definitions databases Most viruses target the windows OS because it is the most widespread OS on the planet. Viruses can be rewritten and hide themselves from antiviruses. Web application
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. .Wicked Cool Shell Scripts: 101 Scripts for Linux‚ Mac OS X‚ and Unix Systems by Dave Taylor ISBN:1593270127 No Starch Press © 2004 This cookbook of useful‚ customizable‚ and fun scripts gives you the tools to solve common Linux‚ Mac OS X and UNIX problems and personalize your computing environment. Table of Contents Wicked Cool Shell Scripts?101 Scripts for Linux‚ Mac OS X‚ and Unix Systems Introduction Chapter 1 - The Missing Code Library Chapter 2 - Improving on User
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