linux operating system manual pdf

... LESSON 9 Linux Operating System Vulnerabilities and security Objectives ♦ Describe the fundamentals of the Linux operating system ♦ Describe the vulnerabilities of the Linux operating system ... operating system ♦ Describe Linux remote attacks ♦ Explain countermeasures for protecting the Linux operating system 2 Review of Linux Security Fundamentals ♦ Linux is a version of UNIX – ... sc/etc/shadow Root:2bcadvr345:0:0:root: /root: /bin/bash - John The Ripper - Viper - Slurple 6 7 Linux File System ♦ Ls –l ♦ -r-x-r-x-wx ♦ Chmod 777 a.txt Firewall: iptables 8 9 10

Ngày tải lên: 29/07/2014, 08:20

... Trang 1Linux Operating System Trang 2Nội dung Tổng quan về hệ điều hành Linux  Hệ thống tập tin trên Linux  Bộ thông dịch lệnh  Lập trình shell script Trang 3Các thành phần của Linux OSTrang ... file-name Trang 14Tài liệu chi tiết Ngô Bá Hùng - Linux - Các lệnh cơ bản  Ngô Bá Hùng - Linux - Hệ thống tập tin  FOSS-Wire.com - Unix/Linux Command Reference [http://sites.google.com/site/nbhung/open-source] ... Nền: hỗ trợ nhiều kiến trúc máy tính: Intel, Alpha, MIPS, Motorola, 64bits system, IBM S/390, SMPs Trang 5Lý do chọn Linux OS (2) Bộ giả lập: cho phép chạy các ứng dụng của các hệ điều hành khác

Ngày tải lên: 08/05/2021, 13:20

... and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005Components of a Linux System Trang 12Components of a Linux System (Cont.)„ Like most UNIX implementations, Linux is composed ... 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 ... PC and PowerMac systems kernel, 64-bit memory support Trang 721.7 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005The Linux System „ Linux uses many

Ngày tải lên: 28/06/2014, 02:20

... Linuxmakes greater use of group accounts than other Linux distributions do So,knowing how to add, modify, and delete group accounts is more important onRed Hat systems than it is with other Linux ... Red Hat Linux distributions and carried forward into FedoraCore and RHEL UPGs are intended to make Linux groups easier to use.Although the UPG scheme does not add or change the normal Linux way ... root access To startUser Manager, click Main Menu ➪ System Settings ➪ Users and Groups Youcan start from a command line using the command system-config-users in a terminal window The initial

Ngày tải lên: 07/07/2014, 09:20

... file system, 155 syslog daemon, 172–174, 482 syslog.conffile, 172–174 syslogdsystem logger, 733 sysstat package, 822, 826 system activity report tool See sar tool system administrator See also system ... troubleshooting resource, 879 system logger (syslogd), 733 system requirements, 20–21 system status icon (GNOME), 101 system user, 69 SystemV file system, 147 T talk real-time chat protocol, 435–436 ... system failure, 8, 9 system log log viewer for, 185–186, 881–882 messages indicating SELinux problems, 840–841 NTP-related entries, 405 Sudo logging to, 733 as troubleshooting resource, 879 system

Ngày tải lên: 07/07/2014, 09:20

... past twenty years) The classical operating system kernel is to be found in most of the systemstoday: Unix, POSIX and Linux, Microsoft’s NT, IBM’s mainframe operatingsystems and many real-time kernels ... such systems as the TITAN Supervisor [34], thethe operating system [19] and Brinch Hansen’s RC4000 supervisor [5]; it isthe approach to kernels described in standard texts on operating systems ... methods have been used in connection with operating systems for a long time The most obvious place for the application of mathematics is in modelling operating system queues There has been previous

Ngày tải lên: 23/07/2014, 23:20

... (2)The UNIX I/O system in BSD Trang 24An example of streams in System V Trang 25The UNIX File System (1)Some important directories found in most UNIX systems Trang 26The UNIX File System (2)• Before ... 35UNIX File System (4)• A BSD directory with three files • The same directory after the file voluminous has been removed Trang 36The Linux File SystemLayout of the Linux Ex2 file system Trang ... directory entry Trang 32UNIX File System (1)Disk layout in classical UNIX systems Trang 33UNIX File System (2)Directory entry fields Structure of the i-node Trang 34UNIX File System (3) The relation between

Ngày tải lên: 18/10/2014, 15:30

... between a guest operating system and a hostoperating system in a system like VMware? What factors need to beconsidered in choosing the host operating system? Answer: A guest operating system provides ... Distributed-File Systems 121 Chapter 19 Multimedia Systems 127 Chapter 20 Embedded Systems 131 Chapter 21 The Linux System 137 Chapter 22 Windows XP 145 Chapter 23 Influential Operating Systems ... sharing f SMP Used in systems where there are multiple CPU’s each run-ning the same copy of the operating system Communication takesplace across the system bus g Distributed.This system distributes

Ngày tải lên: 17/10/2017, 23:16

...    The relation between the file descriptor table, the open file description Trang 36The Linux File System Layout of the Linux Ex2 file system Trang 37Network File System (1) • Examples of remote mounted file systems • Directories are shown as squares, files as circles ... Fields returned by the lstat system call Trang 32UNIX File System (1) Disk layout in classical UNIX systems Trang 33UNIX File System (2) Directory entry fields Structure of the i­node Trang 34UNIX File System (3) ... The UNIX I/O system in BSD Trang 24Streams An example of streams in System V Trang 25The UNIX File System (1) Some important directories found in most UNIX systems Trang 30The  lstat  System Call

Ngày tải lên: 30/01/2020, 04:43

... between a guest operating system and a hostoperating system in a system like VMware? What factors need to beconsidered in choosing the host operating system? Answer: A guest operating system provides ... Distributed-File Systems 121 Chapter 19 Multimedia Systems 127 Chapter 20 Embedded Systems 131 Chapter 21 The Linux System 137 Chapter 22 Windows XP 145 Chapter 23 Influential Operating Systems ... withthe guest operating system Trang 2114 Chapter 2 Operating-System Structures2.17 The experimental Synthesis operating system has an assembler rated within the kernel To optimize system-call

Ngày tải lên: 16/10/2021, 15:40

... about what operating system is? An operating system (OS) is a collection of programs that act as an interface between a computer user and the computer's hardware The purpose of an operating system ... explore the various tools included with the operating system and assess any additional needs My mission was to learn more about the latest Windows operating system tools using the web: firewalls, ... the operating system is running Therefore, anti-virus programs with built-in scanning at startup will work Simply because a virus will not be able to replicate itself while the operating system

Ngày tải lên: 24/10/2024, 17:15

... (File System) 4 Quản lý nhập xuất (I/O) 5 Quản lý thiết bị lưu trữ (Secondary-storage) 6 Quản lý mạng (Networking) 7 Hệ thống bảo vệ (Protection System) 8 Hệ thông dịch lệnh (Commander-Intpreter System) ... Trang 1PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM) Chương 1: Tổng quan Hệ điều hành Đáp án 1 Tổ chức, quản lý và phân phối tài nguyên ... (Program execution) 3 Tổ chức và quản lý xuất nhập (I/O operations) 4 Quản lý hệ thống File (File-system manipulation) 5 Truyền tin (Communications) 6 Xác định và xử lý lỗi (Error detection) 7 Các

Ngày tải lên: 19/10/2013, 18:15

... Portable Operating System Interface for Unix, is a standarddeveloped so that buyers (particularly the U.S government) could be assured of purchasing programs that ran on a variety of systems and ... strict stan-dard so that it is easily ported It’s also designed to run on any POSIX-compliant operating system, which includes most variants of Unix. File Organization The BeOS, like the Mac OS, ... class that I’ll use in this chapter’s examples Trang 3Using Standard Open and Save PanelsAn operating system with a graphical user interface typically provides standard-ized means for opening and

Ngày tải lên: 20/10/2013, 10:15

... SOES and SelectNetNasdaq®operates two automated execution systems—the Small Order Execution SystemSM(SOESSM) and SelectNet® SOES is a system that providesautomatic execution of market and marketable ... youmay update your quote and size manually, or rely on the auto-refresh capabilitydescribed above You must restore your supplemental exposure size manually—thesystem will not automatically refresh ... note that when a Market Maker’s quote is executed against in the SmallOrder Execution SystemSM(SOESSM), the system will decrement the quote bythe size of the execution in SOES When the quote is

Ngày tải lên: 22/10/2013, 14:15

... queried, in this case, dns.my.com Generally, a default name server is chosen at the time the operating system is installed on a given client machine (on Unix machines the information is stored in ... analyst Stephen Northcutt has graciously requested that I author this webcast on the Domain Name System or DNS I’d personally like to thank my excellent technical editors Bill Ralph of Naval Surface ... Trang 1IP Behavior VI – SANS GIAC LevelTwo - ©2000, 2001 1IP Behavior VI Domain Name System (DNS) Hello again I am Judy Novak If you are taking the IP Behavior series in successive

Ngày tải lên: 09/12/2013, 17:15

... Trang 1FL2000 SystemTrang 2FL2000 SystemFL2000 System – Einführung Einzelfaserzugriff Ausschwenkbare Frontplatte ermöglicht überall guten Zugriff Bei dem FL2000 System handelt es sich ... Kompatibilität zu bestehendenoptischen Komponenten • Das System FL2000 ermöglicht den Einsatz von Value-Added-Einsteckmodulen, die optischenTransportsystemen mehr Flexibilität und Funktionalität verleihen ... leitung Kupfer-S GEHÄUSE PLEISS-Faser-Kabelmanagementsystem ® F iberGuide Patchkabel Trang 5FL2000-Abschlusspanel Faser-Kabelmanagementsystem eingangsschrank Faser-Linienkabel Innenkabel (IFC

Ngày tải lên: 10/12/2013, 17:15

... A We must manually install a driver by providing a diskette or CD-ROM if the operating system does not automatically install it or if the driver is not included in the Operating system D Generic ... Control panel, system, performance, graphics B Control panel, system, display settings, graphics C Control panel, system, device manager, properties, graphics D Control panel, system, hardware ... the system only began running slowly after the installation of the new application Trang 18QUESTION NO 43 How can you get a point out of the system configuration on a Windows 9x operating system?

Ngày tải lên: 11/12/2013, 14:15

... needs an Operating System At the most basic level an Operating System (OS) is the interface between you, your software applications, and your computer hardware Functions Operating Systems interpret ... Computer System Interface settings for SCSI controllers, tape drives (if you have a SCSI host adapter) • Services - starts, stops and pauses various services • System - system startup settings, system ... Files Trang 27• Defrag – defragments a hard drive • System Monitor is a Windows utility that tracks system resources(troubleshooting) • MS System Information: for reading configuration and registry

Ngày tải lên: 11/12/2013, 15:15

... Trang 1THE OPERATING SYSTEM MACHINE LEVEL 1 Trang 2Microprogram or hardwareFigure 6-1 Positioning of the operating system machine level. Trang 3Address space Address ... Trang 19Virtual page tagFlags (b) (c) Format is entirely defined by the operating system Translation table (Operating system) TSB (MMU + sofware) Context Figure 6-18 Data structures used in translating ... programSystem call interface File system Process management Block cache IPC Scheduling Hardware Device drivers User mode Kernel mode Memory mgmt. Signals Figure 6-30 The structure of a typical UNIXsystem.

Ngày tải lên: 12/12/2013, 09:15

... Trang 1MAKEUP AIR DEHUMIDIFICATION DESIGN MANUAL Trang 2MAKEUP AIR DEHUMIDIFICATION DESIGN MANUAL The energy crisis of the mid 1970’s gave birth to a movement to ... and reliable makeup air dehumidification system Driven by many years of practical refrigeration experience, the Nautica makeup air dehumidification system is designed to be simple and less ... are needed to fill the system and the devices in the refrigerant circuit are subject to malfunction if a slight amount of dirt is present Designing dehumidification systems for makeup air is

Ngày tải lên: 20/12/2013, 23:15