linux operating system ppt powerpoint

... Trang 1UNIX & LINUX Operating SystemThanh-Hai DANG Information Systems Dept -VNUH Email: haidt82@yahoo.com Trang 2“UNIX is user-friendly, ... versions – System V from AT&T ( System III from 82) – 4.2 BSD of Berkeley Uni, Base for many OS: Sun Microsystems (SunOS), Digital (Ultrix)… – XENIX of Microsoft for PC (Compatible with System ... Trang 17Live CD Linux• Distro Linux on one CD – GNU/Linux OS Plus with necessary softwares – Not affect the current status of PC, HD not required! • Some typical distro – Knoppix – DemoLinux – Mandows

Ngày tải lên: 09/05/2014, 08:45

... 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

... threecolor components), and because it is a color system with which many program-mers and end users are familiar with (it’s common to several operating systems).The BeOS defines rgb_color as a struct ... of 256 colors A pixel value in the range of 0 to 255 is used as an index into a color map This system color map isidentical for all applications That means that when two programs use thesame ... defining analpha byte, which is used to specify a transparency level for a color Trang 3RGB Color SystemAs listed above, the BeOS supports a number of color spaces The RGB colorspace is popular

Ngày tải lên: 26/01/2014, 07:20

... messages and handle them.For the most part, system messages are handled automatically; for instance, when a B_ZOOM message is received, the operating system zooms the window But youcannot completely ... Application Server delivers a system message to an applicationwindow, that message arrives in the form of a BMessage object Your code deter-mines how to handle a system message simply by overriding ... 10When the program refers to a system message by its Be-defined constant, such asB_QUIT_REQUESTED or B_KEY_DOWN, what’s really of interest is the what datamember of the system message The value of

Ngày tải lên: 26/01/2014, 07:20

... 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

... a system administrator, ning with an explanation of the duties of a system administrator and continu-ing through installing your system and finishing with descriptions of the filesystem and system ... popular distribution of Linux currently in use It isa robust, reliable operating system that can run on a variety of hardware, frompersonal computers to large mainframes Linux in general, Fedora ... Fedora Core 4 andRed Hat Enterprise Linux in particular, are very powerful operating systemsthat can be used at the enterprise level as a full-fledged server Linux functionsequally well at the

Ngày tải lên: 07/07/2014, 09:20

... System Boot ■■ Shutting Down the System ■■ Changing the GRUB Configuration All Red Hat systems, whether Fedora Core or Enterprise Linux, use a similarprocedure for starting up the operating system ... communicate with the system componentsuntil the operating system is up and running and able to take over systemmanagement functions Unlike the operating system, which is installed on auser-writable ... desktop ■■ System Tools— This menu choice gives you access to many EnterpriseLinux system administration utilities Tools for configuring your net-work and printers are located here ■■ System Settings—

Ngày tải lên: 07/07/2014, 09:20

... Hat Enterprise Linux systems, the /etc/exportsfile is the main NFS configuration file It lists the file systems the serverexports, the systems permitted to mount the exported file systems, and ... file systems youwant to share and several daemons that make these shared file systems visible com-to and available for use by client systems on the network When an NFS server is sharing a file system ... File System NFS Overview NFS is the most common method used to share files across Linux and UNIXnetworks It is a distributed file system that enables local access to remotedisks and file systems

Ngày tải lên: 07/07/2014, 09:20

... Because Linux supports so many file systems, this chapter discusses only a few of the many file systems and file system options mount’s manual page contains a complete list of the file systems ... mounted file system rw 1 Mounts the file system in read/write mode suid 1 Enables set-UID and set-GID bits on the file system sync 1 Enables synchronous file system I/O on the file system user ... local file systems, ignoring, for example, NFS mounted file systems -x its df’s report to the current file system or the file system to which name refers.-t typelimits the report to file systems

Ngày tải lên: 07/07/2014, 09:20

... for children and zombies now follow.The owner of a code segment is recorded here This allows the system todetermine which process owns any segment of code when swapping occurs code owners
= code ... other processes, so the con-stant devprocqueue denotes the queue of highest-priority processes System processes must be preferred by the scheduler to user processes but should be pre-empted by ... LowLevelScheduler It is defined as follows The scheduler has three queues (readyqs), one each for device, system and user process (in that order) It is worth noting that the process queues are all contained

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

...    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

... Trang 1iPHONE OPERATING SYSTEM Trang 2Content of this templateBelow you will find a summary of the Saveslides example. 1 PowerPoint and google slide examples are mainly ... such as businesses, organizations, institutions. 3 These works are easily editable in Microsoft PowerPoint and Google Slides. 4 A variety of slides to enable an easier and more flexible presentation ... want 6 You will find a large number of easily variable infographic resources. 7 Here you will find PowerPoint works and google slides of different categories such as educational, nature, business,

Ngày tải lên: 31/10/2022, 18:52

... (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

... adaptive control method of partially known system and shows its application result to control of a two-wheeled welding mobile robot The controlled system is designed using Lyapunov stability ... Trang 1đIều khiển thích ứng hệ thống xác định một phần Adaptive Control of Partially Known System Nguyễn Tấn Tiến *, Hoàng Đức Liên** và Kim Sang Bong*** *Khoa Cơ Khí, Đại học Bách khoa ... effectiveness of the proposed controller is shown through simulation results Keyword: partially known system, Welding Mobile Robot(WMR), tracking, welding path reference 1 Giới thiệu Robot di động

Ngày tải lên: 10/12/2013, 13:16

... Then the Operating systems boots and eventually reaches the graphical user Before upgrading you should backup the ini files, confirm that your hardware is compatible with the new operating system, ... 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

... carry out the basic operating functions Ex: Operating systems, utilities, and drivers ATHENA Trang 5Operating System Overview: What is an Operating system ? © An operating system (QOS) is the ... was developed in 1991 © DOS (Disk Operating System) was developed by Microsoft ATHENA Trang 10Personal Computer Operating Systems © Different operating systems are needed for different computing ... ATHENA Trang 8Personal Computer Operating Systems © Windows, Mac OS, Linux, Unix, and DOS © What’s the best-selling operating system’? Windows 2.0 Windows NT 1998 _ 2001 199O

Ngày tải lên: 20/01/2014, 22:20