learning the unix operating system pdf

... documentation on UNIX : 7.1 Standard UNIX 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 (.) ... 2.5.4 The Window Menu single-user operating systems : The UNIX Operating System Size menu item (mwm) : 2.5.4 The Window Menu file:///C|/Documents%20and%20Settings/nmyers/Desktop/learn_unix/index/idx_s.htm ... The UNIX CD Bookshelf Navigation file:///C|/Documents%20and%20Settings/nmyers/Desktop/learn_unix/index/idx_n.htm [6/30/2002 3:41:01 PM] Trang 24Index: Ooperating system, definition of : The UNIX

Ngày tải lên: 25/11/2013, 11:07

... 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 ... Windows operating system tools using the web: firewalls, automatic updates, and scanning for viruses, spyware, and other malware Find the advantages and disadvantages of using the built-in operating ... manager in the company I was asked by the executive to explore the various tools included with the operating system and assess any additional needs My mission was to learn more about the latest

Ngày tải lên: 24/10/2024, 17:15

... that fills the window, then attaching the view to the window:vari-The View Color (Background) To color a shape, the program often refers to the B_SOLID_HIGH constant As youjust saw in the previous ... specified inthe constructor The size is calculated by the constructor, and depends on the val-ues supplied in the second and third parameters The matrix parameter specifiesthe shape of the block ... if they will be usedwith 8-bit pixels For the values used in the previous example, the resulting colorcontrol looks like the one displayed in the window in Figure 5-4 If the userinstead has the

Ngày tải lên: 26/01/2014, 07:20

... results in the playing of the system sound a singletime, while a click on the other button produces the beep twice but-Preparing the window class for the buttons A few additions to the code in the MyHelloWindow.h ... enough, the BButton constructor will increase the buttonheight by increasing the value of the frame rectangle’s bottom value The exactheight of the button depends on the font in which the button ... button to a window, the height of the button may automati-cally be adjusted to accommodate the height of the text of the button’s label andthe border of the button If the values of the frame rectangle

Ngày tải lên: 26/01/2014, 07:20

... across the width of the win-dow—regardless of the size of the window—the rectangle’s right boundary can beset to the current width of the window the menubar is to reside in The call to theBWindowmember ... keyboard rather than the mouse To make themenubar the focus of keyboard keystrokes, the user presses both the Commandand Escape keys Once the menubar is the target of keystrokes, the left and ... Such is the case with the BButton view and the MyDrawView Eachwas added to the window, so these two views are at the same level of the viewhierarchy, just under the window’s top view The MyDrawView

Ngày tải lên: 26/01/2014, 07:20

... editable by the user, but the gram can change it To do that, invoke the BStringView function SetText(),passing the new text as the only parameter In the following snippet, the text ofthe string ... changed, and the altered font is againused as the string view object’s font: BFont theFont; theString->GetFont(&theFont); theFont.SetShear(100.0); theString->SetFont(&theFont); String ... represents the frame rectangle, the firstparameter to the BTextView constructor The light-framed rectangle represents thetextRectrectangle Neither of these rectangles would be visible to the user;

Ngày tải lên: 26/01/2014, 07:20

... unclear the extent to which these services focus on enhancing child development.58 Young children in the child welfare system are not receiving the services and supports that they need to meet their ... the Child Welfare System What Every Policymaker Should Know introduction: Why Focus on Mental Health in the Child Welfare System? The early years of life present a unique opportunity to lay the ... not meet the standard in providing adequate services to meet the “physical and mental well-being” of the children under their care.13 Only two states rated mental health for the children they served

Ngày tải lên: 12/02/2014, 19:20

... associated operating system group, 2-11 sysdef command, 2-17, 2-18 SYSOPER privilege associated operating system group, 2-11 SYSTEM tablespace, description, 5-11 system file, 2-17, 2-18 System Identifier, ... Solaris, 2-31 Character Set Scanner, 1-16 checking distribution of the operating system, 2-5 checking version of the operating system, 2-5 chmod command, 2-22, 2-25, 2-32 chown command, 2-22, 2-25, ... 2-11 creating, 2-14 description, 2-11 operating system checking distribution and version, 2-5 operating system groups creating the dba group, 2-14 creating the oinstall group, 2-13 oinstall, 2-12

Ngày tải lên: 23/03/2014, 16:20

... Required UNIX Groups and User The following local UNIX groups and user must exist on the system: ■ The oinstall group (the Oracle Inventory group) ■ The dba group (the OSDBA group) ■ The oracle ... of these guides are available on the product disc To access them, use a Web browser to open the welcome.htm file, either in the top-level directory of the CD-ROM or in the db directory on the ... Open the /etc/system file in any text editor: # vi /etc/system c. To specify new values for the parameters, add lines similar to the following to the /etc/system file, or edit the lines if the

Ngày tải lên: 07/04/2014, 15:52

... (F4)) Our main theorem, Theorem 3.8, computes the structure of the automorphism group Aut(M (F4)): Theorem 3.8 Aut(M (F4)) ∼= ((Z3 2oS4) o Z3) o Z2 As with the root system H3, there are matroid ... in the sense that no element of the Coxeter group W corresponds to these automorphisms These non-geometric automorphisms correspond to swapping the short and long vectors in the root system The ... represents the 4-point lines of M (F4).possible to see these lines in the graph Γ: they consist of a vertex and an edge from the same component where the vertex is not incident to the edge There are

Ngày tải lên: 07/08/2014, 15:23

... from the first page and ignore what is set by the document itself Images and code syntax are in color in the PDF version but grayscale in the printed version to keep the cost reasonable The PDF ... links to other resources on the Web In the printed version, these links appear as underlined text with a numbered superscript The expanded URLs are then listed as endnotes at the end of the book ... since these nodes provide drivers to the robot's hardware This includes the drivers for the robot base and any cameras, laser scanners or other sensors you want to use On the other hand, the desktop

Ngày tải lên: 29/04/2020, 15:00

... to another principal—aninstance of the principle of least privilege [Saltzer and Schroeder 1975] Such a policy, enforced by the operating system at the behest of a small, trusted part of the application, ... the ∗-property with respect to that tag either by declassifying information or by raising the security clearance of other processes As described later, the bestos system call interface has other ... application-defined users are isolated from one another by the operating system, according to application policy. This is difficult to achieve on any other operating system We evaluated Asbestos by implementing

Ngày tải lên: 01/07/2014, 17:30

... in the preparation of this book to ensure the accuracy of the information presented However, the information contained in this book is sold without warranty, either express or implied Neither the ... cd9660 ro,noauto 0 0 Then you have to reboot the system for the changes to take effect You can verify the proper operation using the following swapinfo(8) command: The softupdates feature ... allocations should be allowed File System Backup There are different utilities in the FreeBSD base system to help system's administrators to take backups from their systems But before starting to

Ngày tải lên: 07/04/2017, 16:34

... test of the lower cervical spine Procedure: The patient is seated Holding the back of the patient's head with one hand and the patient's chin with the other, the examinerpassively extends the patient's ... test of the upper cervical spine Procedure: The patient is seated Holding the back of the patient's head with one hand and the patient's chin with the other, the examinerpassively flexes the patient's ... in the back of the neck Procedure: The seated patient’s head is passively tilted first to one side and then the other Then the patient is asked to tilt his or her head to oneside against the

Ngày tải lên: 17/02/2014, 19:20

... 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 into the following categories: Application ... posted message becomes the next in the queue, the looper invokes DispatchMessage() to pass the message to the target handler. The effect is for the posted message to reach the target handler’s ... sev- eral examples of the creating of messages and the dispatching of these messages both by the object that created them and by other objects. Figure 9-1. The inheritance hierarchy for the Application...

Ngày tải lên: 17/10/2013, 19:15

... For the Save file panel, the display of the panel comes when the user chooses the Save As item from the File menu. In response to the message issued by the system to the appropriate MessageReceived() ... control is in the hands of the user. Once the user confirms a choice (whether it’s a file selection in the Open file panel, a click on the Save button in the Save file panel, or a click on the Can- cel ... in either type of panel), a message is automatically sent by the system to the panel’s target. By default the panel’s target is the application object, but this can be changed (either in the BFilePanel...

Ngày tải lên: 20/10/2013, 10:15

... 4.0-compliant browser, the data is sent in XML format to the client computer. If the user sorts or queries the data, the operation is performed locally on the client; thereby increasing the process time ... starts and displays the administrator's Inbox. Note the items in the Inbox. These items are stored in the Web Storage System. 4. If the Folder List is not displayed, on the View menu, click ... In the Folder List pane, click Calendar. Note the appointment items in the Calendar. These items are stored in the Web Storage System. 6. In the Folder List pane, click Contacts. Note the...

Ngày tải lên: 11/12/2013, 14:15

... special file systems such as the /proc file system, this is none. n The second element is the mount point, the place in the root file system at which the file system contents appear. For the root file system ... and File Systems The /proc file system also contains information about the disk drives present in the system and the file systems mounted from them. 7.5.1 File Systems The /proc/filesystems entry ... scheduled to run rather than being blocked in a system call—and the total number of processes on the system .The final entry is the process ID of the process that most recently ran. The /proc/uptime...

Ngày tải lên: 26/01/2014, 07:20

... during the execution of a program. An object can be added or deleted from the heap without regard for its placement in the heap, or for the other contents of the heap. The stack, on the other hand, ... such tasks. The zoom- ing and moving of windows is handled by the system, not by the SimpleApp code. This simple demonstration emphasizes the power of the BeOS system software—it is the system software ... window’s tab) • The type of the window (the look and feel of the window) • The behavior of the window (whether it has a resize knob, and so forth) Recall from your C++ background that when the definition...

Ngày tải lên: 26/01/2014, 07:20

... file with the same name as the project (and thus the same name as the application that will be built from the project). The header file holds the definition of the class derived from the BApplication ... any resizing of the window. The final BView constructor parameter determines the types of notifications the view is to receive from the system. The Be constant B_WILL_DRAW means that the view should ... stated that the header file that bears the name of the project should hold the declaration of the project’s application class the class derived from the BApplication class. Here you see that the HelloWorld.h...

Ngày tải lên: 26/01/2014, 07:20