linux operating system ppt powerpoint
GNU/Linux Basic operating system ppt
Ngày tải lên :
08/03/2014, 23:20
... 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...
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Tài liệu Microsoft® Windows® 2000 Network and Operating System Essentials ppt
Ngày tải lên :
09/12/2013, 17:15
... 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 ... PowerPoint
®
.
„#
Memory management
The operating system allocates memory to each application, without
affecting the memory used by other applications.
„#
Data management
The operating system...
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Tài liệu Programming the Be Operating System-Chapter 1: BeOS Programming Overview ppt
Ngày tải lên :
26/01/2014, 07:20
... 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...
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Tài liệu Programming the Be Operating System-Chapter 5: Drawing ppt
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)
{
...
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Tài liệu Programming the Be Operating System-Chapter 6: Controls and Messages ppt
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...
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Tài liệu Programming the Be Operating System-Chapter 8: Text ppt
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;...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
Ngày tải lên :
12/09/2012, 15:05
... University
Pittsburgh, PA 15213
Appeared in Proceedings of the 11th Operating Systems Principles,
November, 1987
Abstract
Mach is a multiprocessor operating system being implemented at Carnegie-Mellon University. ... Collins and L.W. Loen.
System/ 38 Machine Storage Management.
IBM System/ 38 Technical Developments, IBM General Systems Division :63-66, 1978.
[7] Gupta, A.
Parallel Production Systems.
PhD thesis, ... November, 1984.
[9] Kahn, K.C. et al.
iMAX: A Multiprocessor Operating System for an Object-Based Computer.
In Proc. 8th Symposium on Operating Systems Principles, pages 127-136. ACM, December, 1981.
[10]...
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Tổng quan về Operating System
Ngày tải lên :
18/03/2013, 16:48
... này là hệ
điều hành sau này.
1.23
Một số khái niệm của hệ điều hành(tt)
Sự phân lớp hệ thống (System Layering)
–
Mỗi người sử dụng khác nhau yêu cầu khai thác hệ điều
hành ở những mức độ khác...
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Operating system
Ngày tải lên :
03/08/2013, 01:26
...
Warm up
A. Look at the diagram
What is the function of the operating system?
The function of operating system is to control a computer,
manage the function of the computer, and ... text below and find
1. MS - DOS
2. Microsoft window
3. Pocket PC
4. Mac OS
5. OS/2Wrap
6. UNIX
7. Linux
8. Solaries
...
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Linux Gold-System Build
Ngày tải lên :
05/10/2013, 08:51
... address and a system name, and then you can connect
the finished system to the network.
for slice in 6 1 5 7 8 9 11
do
umount /dev/hda$slice
done
245
■ ■ ■
CHAPTER 38
Linux Gold -System Build
B
uilding ... /tmp/root/boot
mount /dev/hda5 /tmp/root/usr
if [ ! -d /tmp/root/usr/local ]
248
CHAPTER 38
■
LINUX GOLD -SYSTEM BUILD
system to make sure the script output and the gold partition table match while account-
ing ... file systems were part of this build, but it would be trivial to modify the code to
remove unnecessary ones or to add your own file systems to match your gold build.
The last two file systems...
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Programming the Be Operating System-Chapter 9: Messages and Threads
Ngày tải lên :
17/10/2013, 19:15
... dealt mostly with system messages—messages generated
and dispatched by the system. The Message Protocols appendix of the Be Book
defines all the system messages. In short, system messages fall ... BClipboard object that is used to access the systemwide
clipboard.
330 Chapter 9: Messages and Threads
BClipboard class
The previous section described the system s application roster, the be_roster ... carry out the message’s action. That leads to the distinc-
tion that a system message is usually handled by a hook function (some system-
generated messages, such as the standard messages resulting...
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