linux operating system ppt

... file system hierarchy Any operating system needs to save numerous files: from system configuration files, to log files or user files etc. In general, each operating system uses its own file system ... use. On GNU/ Linux systems, this system is called a quota. GNUFDL• PID_00148393 19 Basic GNU /Linux servers, groups etc. This account should not be used for working normally on the system. We should ... have on the system appropriately, so that we can have more than one operating system installed on the same disk, for instance. The df command shows us, for each unit mounted on the system, the...

Ngày tải lên: 08/03/2014, 23:20

... | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y Index: O operating system, definition of : The UNIX Operating System options, command : 1.2. Syntax of UNIX Command Lines output ... Documentation DOS, accessing with UNIX : 4.4.6. Files on Other Operating Systems MTOOLS utilities for : 4.4.6. Files on Other Operating Systems dot (.) . directory shortcut : 3.1.8.1. ls in ... ask another UNIX user or your system administrator.) 1.1.1.1 Connecting from another operating system If you're using a personal computer to connect to the UNIX system, you'll probably...

Ngày tải lên: 18/03/2014, 00:20

... facilities Distributions Linux • Distribution = A collection of all or some programs altogether around a Linux kernel which allows to install a collaborative system, operating perfectly. – Include ... OS. – -p, processor: processor type #uname –a  Linux linuxsrv.linuxvn.net 2.2.14-5.0#1 Tue Mar 7 21:07:39 EST 2000 i386 unknown Free Software, Linux & Open Source • 1984 : Richard Stallman, ... Live 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 – FreeSBIE ...

Ngày tải lên: 09/05/2014, 08:45

Ngày tải lên: 29/07/2014, 08:20

Ngày tải lên: 12/08/2014, 06:22

... network operating system. Just as a computer cannot operate without an operating system, a network of computers cannot operate without a network operating system. Every network operating system ... network operating system s manufacturer, a desktop computer’s networking software can be added either to the computer’s own operating system or be integrated with it. Network operating system ... mathematical calculation. A network operating system must also support multiple processors, clusters of disk drives, and data security features. Finally, a network operating system must be reliable and...

Ngày tải lên: 09/12/2013, 17:15

... Accept upgrade transfer from other hosts Enabled Actions [U] System XMODEM upgrade [D] Download test subsystem (XMODEM) [T] System TFTP upgrade [X] Exit to Main Menu Enter Selection: ... and Intermediate Routing v 3.0 - Lab 6.2.7a Copyright  2003, Cisco Systems, Inc. Lab 6.2.7a Managing Switch Operating System Files Objective • Create and verify a basic switch configuration. ... An example of the Firmware Configuration Menu is: Catalyst 1900 - Firmware Configuration System Information FLASH: 1024K bytes V8.01.00 : Enterprise Edition Upgrade status: No upgrade...

Ngày tải lên: 24/01/2014, 19:20

... multithreaded operating system and a very efficient one. While programmers can explicitly create threads, much of the work of handling threads is taken care of behind the scenes by the operating system ... upgrade its operating system, it must take into account the millions of users that have a large invest- ment in software designed to run on the existing version of its operating system. So no ... with the system s ability to assign threads to processors based on the current load on each processor, makes for a system with very high performance. Preemptive Multitasking An operating system...

Ngày tải lên: 26/01/2014, 07:20

... three color 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 ... StrokeRect(rect8); SetPenSize(12.0); StrokeRect(rect12); Shapes Be claims that the BeOS is an operating system for the graphics community. So it’s hoped that the BeOS makes it easy for programmers ... user clicks the mouse in the MyDrawView view, MouseDown() makes the system aware of the fact that the view needs updating, and the system invokes Draw(): void MyDrawView::MouseDown(BPoint point) { ...

Ngày tải lên: 26/01/2014, 07:20

... the affected view invoking the BView hook function MouseDown(). Besides being the recipient of system messages, a window is also capable of receiving application-defined messages. This lets you ... window. When the user operates the control (typically by clicking on it, as for a button), the system passes the applica- tion-defined message to the window. How the window handles the message ... BWindow::MessageReceived(BMessage* message) { switch(message->what) { // handle B_KEY_DOWN and scripting-related system messages Figure 6-3. Message passed to parent class’s version of MessageReceived() message Application server MessageReceived() BWindow-derived version MessageReceived() BWindow version MessageReceived() BHandler version message message Checkboxes...

Ngày tải lên: 26/01/2014, 07:20

... may not always fit within the confines of a view. Enter the scrollbar. The APIs for other operating systems that employ a graphical user interface include routines to work with scrollbars, but ... setting a view’s font to one of the global system fonts, but you can use SetFont() with any BFont object. Here, one view is having its font set to the global system font be_ plain_font, while another ... machine may have more than the three system fonts installed, your application shouldn’t make any font-related assumptions. You can’t be sure every user has a non -system font your application uses;...

Ngày tải lên: 26/01/2014, 07:20

... interface standards are EIDE (Enhanced Integrated Drive Electronics) and SCSI (Small Computer System Interface). • EIDE has evolved over the years and has several variants, all of which have...

Ngày tải lên: 16/02/2014, 08:20

... dụng nhận được chúng. Hệ thống của bạn có thể sử dụng Unix /Linux, nhưng đâu phải tất cả các User trong hệ thống của bạn đều sử dụng Unix /Linux ? Nếu như không muốn nói rằng 90 % họ sử dụng Windows. ... để thực hiện việc này (Redhat Package Manager - Linux ) Về cơ bản! các Service được định nghĩa hoạt động bởi inetd (trên một số hệ thống Linux mới nó có thể là xinetd). Nội dung Service ... None AllowOverride None Order deny,allow /sbin/lilo: image = /boot/vmlinuz-2.2.17 label = Linux read-only restricted password = your-password Kernel OpenWall tỏ ra rất hữu ích trong...

Ngày tải lên: 18/06/2014, 10:05

... terminate 3.4 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7 th Edition, Feb 7, 2006 Process in Memory Process in Memory 3.39 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7 th Edition, ... Galvin and Gagne ©2005 Operating System Concepts - 7 th Edition, Feb 7, 2006 Process Termination Process Termination  Process executes last statement and asks the operating system to delete it ... exiting  Some operating system do not allow child to continue if its parent terminates – All children terminated - cascading termination 3.3 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts...

Ngày tải lên: 28/06/2014, 02:20

... Request Chapter 13: I/O Systems Chapter 13: I/O Systems 13.21 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 2, 2005 Kernel I/O Subsystem Kernel I/O Subsystem  Scheduling z ... Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 2, 2005 The STREAMS Structure The STREAMS Structure 13.31 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, ... and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 2, 2005 Two I/O Methods Two I/O Methods Synchronous Asynchronous 13.6 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts...

Ngày tải lên: 28/06/2014, 02:20

... Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Implementing Real Implementing Real - - Time Time Operating Systems Operating Systems  In general, real-time operating systems ... Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Chapter 19: Real Chapter 19: Real - - Time Systems Time Systems  System Characteristics  Features of Real-Time Systems  Implementing ... Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 System System - - on on - - a a - - Chip Chip  Many real-time systems are designed using system- on-a-chip (SOC)...

Ngày tải lên: 28/06/2014, 02:20

... ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005 The Linux System The Linux System  Linux uses many tools developed as part of Berkeley’s BSD operating system, MIT’s X Window System, ... and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005 Components of a Linux System Components of a Linux System 21.36 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts ... memory 21.13 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005 Components of a Linux System (Cont.) Components of a Linux System (Cont.)  The system libraries define a standard...

Ngày tải lên: 28/06/2014, 02:20

Ngày tải lên: 03/07/2014, 07:20

Ngày tải lên: 07/07/2014, 09:20

Ngày tải lên: 07/07/2014, 09:20