Chapter 2: Operating
... File-system manipulation - The file system is of particular interest. Obviously, programs need to read and write files and directories, create and delete them, search them, list file Information, permission management. ...
... File-system manipulation - The file system is of particular interest. Obviously, programs need to read and write files and directories, create and delete them, search them, list file Information, permission management. ...
Windows Server 2008 - Dr. Edward E. Boas, Jr., Professor
... of two or more disks – RAID level 1 – uses two disks that are mirror images of one another so that if one fails, the other one takes over – RAID level 2 – provides disk striping, and all disks contain information to help recover data in case one fails – RAID level 3 – same as RAID level 2, but error ...
... of two or more disks – RAID level 1 – uses two disks that are mirror images of one another so that if one fails, the other one takes over – RAID level 2 – provides disk striping, and all disks contain information to help recover data in case one fails – RAID level 3 – same as RAID level 2, but error ...
Abstract View of System Components
... Keep track of which parts of memory are currently being ...
... Keep track of which parts of memory are currently being ...
Slide 1
... Answer A for True and B for False 041200 A file specification is also called a path. 041300 Windows Explorer is a file management utility. 041400 Disks are formatted into tracks and sectors. 041500 Time Machine is synchronization software used for backup on Macs. 041600 To repopulate a new ...
... Answer A for True and B for False 041200 A file specification is also called a path. 041300 Windows Explorer is a file management utility. 041400 Disks are formatted into tracks and sectors. 041500 Time Machine is synchronization software used for backup on Macs. 041600 To repopulate a new ...
Distributed File Systems
... Microsystems and Apollo Computer, and later the UNIX wars (ca 1987-1996) between AT&T and Sun on one side, and Digital Equipment, HP, and IBM on the other. During the development of the ONC protocol (called SunRPC at the time), only Apollo's Network Computing System (NCS) offered comparable function ...
... Microsystems and Apollo Computer, and later the UNIX wars (ca 1987-1996) between AT&T and Sun on one side, and Digital Equipment, HP, and IBM on the other. During the development of the ONC protocol (called SunRPC at the time), only Apollo's Network Computing System (NCS) offered comparable function ...
Operating System Structure
... System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient ...
... System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient ...
Multicores
... The Opteron uses HT as a chip - to - chip interconnection between CPU and the I/O. The components connected with HT are connected in a peer - to - peer fashion and are, therefore, able to communicate with each other directly without the need of data buses. HT Links. I/O devices and buses such as PCI ...
... The Opteron uses HT as a chip - to - chip interconnection between CPU and the I/O. The components connected with HT are connected in a peer - to - peer fashion and are, therefore, able to communicate with each other directly without the need of data buses. HT Links. I/O devices and buses such as PCI ...
ppt
... The environment vector is a list of “NAME=VALUE” pairs that associates named environment variables with arbitrary textual values. ...
... The environment vector is a list of “NAME=VALUE” pairs that associates named environment variables with arbitrary textual values. ...
Chapter-3-OpratingSystemSupport
... distributed operating system is that users tend to prefer to have a degree of autonomy for their machines, even in a organization. Unix and Windows are two examples of network operating systems. Those have a networking capability built into them and so can be used to access remote resources usin ...
... distributed operating system is that users tend to prefer to have a degree of autonomy for their machines, even in a organization. Unix and Windows are two examples of network operating systems. Those have a networking capability built into them and so can be used to access remote resources usin ...
ppt
... secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: Free space management Storage allocation ...
... secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: Free space management Storage allocation ...
Programming Assignment 0
... javac C1.java C2.java (compile classes C1 and C2 to bytecode for the Java Virtual Machine) javac p/*.java (compile all classes in the package p) javac -d dir p/C.java (compile class p.C; generate its class file in directory dir) javac -cp d1:d2 C.java (compile class C; d1 and d2 are added to the cla ...
... javac C1.java C2.java (compile classes C1 and C2 to bytecode for the Java Virtual Machine) javac p/*.java (compile all classes in the package p) javac -d dir p/C.java (compile class p.C; generate its class file in directory dir) javac -cp d1:d2 C.java (compile class C; d1 and d2 are added to the cla ...
Chapter 2: Operating-System Structures Silberschatz, Galvin and Gagne ©2013 – 9
... Many types of resources - CPU cycles, main memory, file storage, ...
... Many types of resources - CPU cycles, main memory, file storage, ...
ch11file_system_implementation
... Volume Control Block (called a super block in UFS and a Master File Table in NTFS file systems; contains things like the number of blocks, size of blocks, etc.) ...
... Volume Control Block (called a super block in UFS and a Master File Table in NTFS file systems; contains things like the number of blocks, size of blocks, etc.) ...
No Slide Title
... The environment vector is a list of “NAME=VALUE” pairs that associates named environment variables with arbitrary textual values. Passing environment variables among processes and ...
... The environment vector is a list of “NAME=VALUE” pairs that associates named environment variables with arbitrary textual values. Passing environment variables among processes and ...
ch2
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application ...
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application ...
PowerPoint Presentation - Service Oriented Architecture
... The Unicode Standard is a character coding system designed to support the worldwide interchange, processing, and display of the written texts of the diverse languages and technical disciplines of the modern world. In addition, it supports classical and historical texts of many written languages.4 Un ...
... The Unicode Standard is a character coding system designed to support the worldwide interchange, processing, and display of the written texts of the diverse languages and technical disciplines of the modern world. In addition, it supports classical and historical texts of many written languages.4 Un ...
Operating Systems and File Management
... A. iOS is built on the Windows kernel, so it is ideal for smartphones because it has good resistance to malware. B. If you don’t like the user interface for Windows but want to run the vast variety of Windows software, you can install Linux. C. Linux and Mac OS have a reputation for being more ...
... A. iOS is built on the Windows kernel, so it is ideal for smartphones because it has good resistance to malware. B. If you don’t like the user interface for Windows but want to run the vast variety of Windows software, you can install Linux. C. Linux and Mac OS have a reputation for being more ...
Slide 1
... To designate a file’s location, you must first specify the device where the file is stored – The main hard disk usually is referred to as Drive C A disk partition is a section of hard disk drive that is treated as a separate storage unit – Partitions can be assigned drive letters – Partitions ar ...
... To designate a file’s location, you must first specify the device where the file is stored – The main hard disk usually is referred to as Drive C A disk partition is a section of hard disk drive that is treated as a separate storage unit – Partitions can be assigned drive letters – Partitions ar ...
system programs
... • The interrupt vector is an array of locations that hold the addresses of these routines, usually held in low memory. ...
... • The interrupt vector is an array of locations that hold the addresses of these routines, usually held in low memory. ...
07 Exceptions
... when the program is run An exception is an error that is only detected at run time. ...
... when the program is run An exception is an error that is only detected at run time. ...
UNIX I
... ❍ cannot link to a different disk ❍ only one link to a directory (actually not quite true as there are all the Ò..Ó links) ...
... ❍ cannot link to a different disk ❍ only one link to a directory (actually not quite true as there are all the Ò..Ó links) ...
Slide 1
... multiple tasks, rather than the operating system’s ability to do so? A. Multi-core B. Multitasking C. Multithreading D. Multiprocessing Chapter 4: Operating Systems and File Management ...
... multiple tasks, rather than the operating system’s ability to do so? A. Multi-core B. Multitasking C. Multithreading D. Multiprocessing Chapter 4: Operating Systems and File Management ...
Using Linux Kernel Modules For Operating Systems Class Projects
... competency with C and Unix and to establish basic concepts which would be used in later projects. Four projects involving Linux kernel modules were used. The first project is to develop a simple shell using the fork() and execv() system calls to learn about process creation. This is Lab 2.1 as desc ...
... competency with C and Unix and to establish basic concepts which would be used in later projects. Four projects involving Linux kernel modules were used. The first project is to develop a simple shell using the fork() and execv() system calls to learn about process creation. This is Lab 2.1 as desc ...
Library (computing)
In computer science, a library is a collection of non-volatile resources used by computer programs, often to develop software. These may include configuration data, documentation, help data, message templates, pre-written code and subroutines, classes, values or type specifications. In IBM's OS/360 and its successors they are referred to as partitioned data sets.In computer science, a library is a collection of implementations of behavior, written in terms of a language, that has a well-defined interface by which the behavior is invoked. This means that as long as a higher level program uses a library to make system calls, it does not need to be re-written to implement those system calls over and over again. In addition, the behavior is provided for reuse by multiple independent programs. A program invokes the library-provided behavior via a mechanism of the language. For example, in a simple imperative language such as C, the behavior in a library is invoked by using C's normal function-call. What distinguishes the call as being to a library, versus being to another function in the same program, is the way that the code is organized in the system. Library code is organized in such a way that it can be used by multiple programs that have no connection to each other, while code that is part of a program is organized to only be used within that one program. This distinction can gain a hierarchical notion when a program grows large, such as a multi-million-line program. In that case, there may be internal libraries that are reused by independent sub-portions of the large program. The distinguishing feature is that a library is organized for the purposes of being reused by independent programs or sub-programs, and the user only needs to know the interface, and not the internal details of the library.The value of a library is the reuse of the behavior. When a program invokes a library, it gains the behavior implemented inside that library without having to implement that behavior itself. Libraries encourage the sharing of code in a modular fashion, and ease the distribution of the code. The behavior implemented by a library can be connected to the invoking program at different program lifecycle phases. If the code of the library is accessed during the build of the invoking program, then the library is called a static library. An alternative is to build the executable of the invoking program and distribute that, independently from the library implementation. The library behavior is connected after the executable has been invoked to be executed, either as part of the process of starting the execution, or in the middle of execution. In this case the library is called a dynamic library. A dynamic library can be loaded and linked as part of preparing a program for execution, by the linker. Alternatively, in the middle of execution, an application may explicitly request that a module be loaded.Most compiled languages have a standard library although programmers can also create their own custom libraries. Most modern software systems provide libraries that implement the majority of system services. Such libraries have commoditized the services which a modern application requires. As such, most code used by modern applications is provided in these system libraries.