File in Unix

CS 141 presents abouts Labs are mandatory; attendance will be taken in each lab; make account on moodle; projects will be submitted via moodle; connecting to a Unix/Linux system; unix/Linux File System;...

49p thanhfethut 23-03-2015 41 4   Download

Lecture Operating System: Chapter 10 - Unix and Linux presented History of unix, Overview of unix, Processes in unix, Memory management in unix, Input/output in unix, The unix file system, Security in unix.

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Overview Access Control Matrix model Discretionary Access Control (DAC) Mandatory Access Control (MAC) and an example model Role Based Access Control (RBAC) Access Control in Unix Sep 2009 Information Security by Van K Nguyen Hanoi University of Technology 2 .What is AC Quote from Ross Anderson (text “Security Engineering”) Its function is to control which principals (persons, processes, machines, …) have access to which resources in the system -- which files they can read, which programs they can execute, and how they share data with other principals, and so on....

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Hiển thị manual page cho các lệnh, file config,... Có thể nói đọc man là bước đầu tiên khi muốn tìm hiểu một lệnh hoặc config một file nào đó.  Ví dụ: man adduser Các lệnh quản lý nhóm người dùng Quản lý nhóm người dùng: - Mỗi người dùng trong hệ thống UNIX đều thuộc vào 1 nhóm cụ thể. Tất cả người dùng trong cùng 1 nhóm có thể cùng truy cập 1 tiện ích như máy in chẳng hạn. - Một người dùng có thể là thành viên của nhiều nhóm khác nhau, tuy nhiên tại 1 thời điểm, người dùng...

32p duongvduy 03-01-2013 141 18   Download

Hướng Dẫn Cài Đặt NS2 2.35 Trên Ubuntu 12.04 Bước 1 : download NS2 2.35 tại địa chỉ http://sourceforge.net/projects/nsnam/files/allinone/ns-allinone-2.35/ns-allinone2.35.tar.gz/download Bước 2 : Sau khi download về các bạn giải nén để được thư mục ns-allinone-2.35 Bước 3 : copy thư mục này vào trong thư mục home Bước 4 : cài đặt công cụ biên dịch Các bạn mở terminal và chạy dòng lệnh sau : sudo apt-get install build-essential tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev gcc-4.4 g++4.4 xgraph libxmu-dev libxmu-headers Bước 5 : Fix bug gcc Trong thư mục ns-allinone-2.35/otcl-1.14 và ns-allinone-2.

2p vuthanhdt9 18-10-2012 1048 89   Download

Linux History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security To explore the history of the UNIX operating system from which Linux is derived and the principles which Linux is designed upon To examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication To look at memory management in Linux To explore how Linux implements file systems and manages I/O devices...

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Networking with UNIX-Type of Operating Systems Describe the origins and history of the UNIX operating system Identify similarities and differences between popular implementations of UNIX Describe the features and capabilities of servers running Solaris, Linux, and Mac OS X Server Explain and execute essential UNIX commands Install and configure Linux on an Intel-based PC Manage users, groups, and file access permissions in Solaris, Linux, and Mac OS X Server Explain how computers running other operating systems can connect to UNIX servers...

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History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security History Linux is a modem, free operating system based on UNIX standards. First developed as a small but self-contained kernel in 1991 by Linus Torvalds, with the major design goal of UNIX compatibility. Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet.

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16.4. Online Help Mac OS X comes with over 1,200 Unix programs like the ones described in this chapter. How are you supposed to learn what they all do? Fortunately, almost every Unix program comes with a help file. It may not appear within an elegant

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16.2. Navigating in Unix If you can't see any icons for your files and folders, how are you supposed to work with them? UP TO SPEED Pathnames 101 In many ways, browsing the contents of your hard drive using Terminal is just like doing so with the Finder

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Like most operating systems in the last 40 years, Unix uses a hierarchical "tree-structured" file system (interestingly, tree-structure and other aspects of the Unix file system are a direct result of the original Unix developers being influenced by the Multics project they had been working on). Directories contain files and subdirectories which, may in turn, contain other files and subdirectories, and so on.

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The /usr/bin/awk utility scans each input filename for lines that match any of a set of patterns specified in prog. The prog string must be enclosed in single quotes (') to protect it from the shell. For each pattern in prog there may be an associated action performed when a line of a filename matches the pattern. The set of pattern-action statements may appear literally as prog or in a file specified with the -f progfile option. Input files are read in order; if there are no files, the standard input is read. The file name '-' means the standard input....

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