Chapter 2: System Structures
... 4 Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request and release code l Accounting - To keep track of which users use how much and what kinds of computer resources l Protection and ...
... 4 Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request and release code l Accounting - To keep track of which users use how much and what kinds of computer resources l Protection and ...
CS4023_-_lecture_05_-_0910
... I/O operations - A running program may require I/O, which may involve a file or an I/O device. 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. ...
... I/O operations - A running program may require I/O, which may involve a file or an I/O device. 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. ...
View File
... – Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other • Protection involves ensuring that all access to system resources is controlled • Security ...
... – Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each other • Protection involves ensuring that all access to system resources is controlled • Security ...
quiz1-s3
... Turn off interrupts. d) Access I/O device. 2. Which of the following would lead you to believe that a given system is an SMP-type system? a) Each processor is assigned a specific task. b) There is a boss–worker relationship between the processors. c) Each processor performs all tasks within the oper ...
... Turn off interrupts. d) Access I/O device. 2. Which of the following would lead you to believe that a given system is an SMP-type system? a) Each processor is assigned a specific task. b) There is a boss–worker relationship between the processors. c) Each processor performs all tasks within the oper ...
資工系網媒所NEWS實驗室Chapter 2
... Sometimes implemented in kernel, sometimes by systems program Sometimes multiple flavors implemented – shells Primarily fetches a command from user and executes it Sometimes commands built-in, sometimes just names of programs If the latter, adding new features doesn’t require shell modification ...
... Sometimes implemented in kernel, sometimes by systems program Sometimes multiple flavors implemented – shells Primarily fetches a command from user and executes it Sometimes commands built-in, sometimes just names of programs If the latter, adding new features doesn’t require shell modification ...
Unix History, and Background
... • Data is stored as files. • A collection of files is stored in a directory, which is in turn stored in a directory tree. • An operating system is a program which enables other programs to use the computers hardware. • A program would have to be written for each type of computer as each has differen ...
... • Data is stored as files. • A collection of files is stored in a directory, which is in turn stored in a directory tree. • An operating system is a program which enables other programs to use the computers hardware. • A program would have to be written for each type of computer as each has differen ...
Structure of Operating Systems
... • In the idle loop: – OS executes an infinite loop (UNIX) – OS performs some system management & profiling – OS halts the processor and enter in low-power mode (notebooks) – OS computes some function (DEC’s VMS on VAX computed Pi) • OS wakes up on: – interrupts from hardware devices – traps from use ...
... • In the idle loop: – OS executes an infinite loop (UNIX) – OS performs some system management & profiling – OS halts the processor and enter in low-power mode (notebooks) – OS computes some function (DEC’s VMS on VAX computed Pi) • OS wakes up on: – interrupts from hardware devices – traps from use ...
D00_Files
... current Unix-like operating systems (OS) are POSIX compliant (or nearly so): Linux, BSD, Solaris, AIX, IRIX While an understanding of each operating system’s design is necessary to fully utilize its API, most functions work almost identically on any compliant operating system We will develop for ...
... current Unix-like operating systems (OS) are POSIX compliant (or nearly so): Linux, BSD, Solaris, AIX, IRIX While an understanding of each operating system’s design is necessary to fully utilize its API, most functions work almost identically on any compliant operating system We will develop for ...
Operating Systems: Principles and Practice, Introduction
... pass. The right approach is to [read each chapter before class and] re-read each chapter once we've covered the corresponding material… more of it will make sense then. Don't save this re-reading until right before the mid-term or final – keep up.” ...
... pass. The right approach is to [read each chapter before class and] re-read each chapter once we've covered the corresponding material… more of it will make sense then. Don't save this re-reading until right before the mid-term or final – keep up.” ...
Operating Systems - Glyndwr University
... Single-user, multi-tasking - Type of operating system most people use on their desktop and laptop computers today. Multi-user - A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously. The operating system must make sure that the require ...
... Single-user, multi-tasking - Type of operating system most people use on their desktop and laptop computers today. Multi-user - A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously. The operating system must make sure that the require ...
83-381 Syllabus English
... First Semester 2016/17 Weekly hours: 2 lecture + 1 training 1) Course objectives: An operating system is a set of subsystems/programs that manage a computer system composed of hardware and software resources, providing common services/utilities needed to run system and user applications. All compute ...
... First Semester 2016/17 Weekly hours: 2 lecture + 1 training 1) Course objectives: An operating system is a set of subsystems/programs that manage a computer system composed of hardware and software resources, providing common services/utilities needed to run system and user applications. All compute ...
talk
... – What algorithms are typically used • We will do this through reading, lectures, and a project. • You will need to keep up with all three of these. ...
... – What algorithms are typically used • We will do this through reading, lectures, and a project. • You will need to keep up with all three of these. ...
Document
... Role of the Administrative Systems Advisory Council (ASAC) Involve UGA business units and stakeholders with shared responsibility in the delivery and support of information technology, application, and data needs of the University community. Represent the entire University when making administ ...
... Role of the Administrative Systems Advisory Council (ASAC) Involve UGA business units and stakeholders with shared responsibility in the delivery and support of information technology, application, and data needs of the University community. Represent the entire University when making administ ...
VMS-Spr-2001-sect-1-group
... • Password security is unmatched by UNIX or Microsoft • Provides security from denial-of-service attacks, hot-swappable hardware, and the ability to run multiple instances of the operating system on the same machine to increase reliability ...
... • Password security is unmatched by UNIX or Microsoft • Provides security from denial-of-service attacks, hot-swappable hardware, and the ability to run multiple instances of the operating system on the same machine to increase reliability ...
01-intro
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
History of Unix OS
... improved and distributed often Many users can spot bugs in the operating system or application if source code is “open” ...
... improved and distributed often Many users can spot bugs in the operating system or application if source code is “open” ...
Introduction
... • They are forked before the user is authenticated, and able to run with higher permissions than any user, and survive the end of the login sessions. • Examples are processes that control web servers, remote logins, and print servers. ...
... • They are forked before the user is authenticated, and able to run with higher permissions than any user, and survive the end of the login sessions. • Examples are processes that control web servers, remote logins, and print servers. ...
Chapter 7A Functions of Operating Systems Types of Operating
... – Provides consistent access to OS features ...
... – Provides consistent access to OS features ...
COS 318: Operating Systems Overview Kai Li Computer Science Department
... Browser, shell, powerpoint, word, … ...
... Browser, shell, powerpoint, word, … ...
Ch10aProtectionMechanisms
... Simple networking devices that filter packets by examining every incoming and outgoing packet header ...
... Simple networking devices that filter packets by examining every incoming and outgoing packet header ...
CSc 352: Systems Programming & Unix
... • Each command performs [variations of] a single task – “options” can be used to modify what a command does – different commands can be “glued together” to perform more complex tasks ...
... • Each command performs [variations of] a single task – “options” can be used to modify what a command does – different commands can be “glued together” to perform more complex tasks ...
Chapter 14 Network Security - Cambridge Regional College
... • Microsoft now includes the option to use software called Windows Update with its operating systems. ...
... • Microsoft now includes the option to use software called Windows Update with its operating systems. ...
Chapter 4
... - closing unneeded ports - turning off (or not installing) unneeded services - removing auto-response banner messages - note: there are many more hardening steps – most of these are OS or application specific ...
... - closing unneeded ports - turning off (or not installing) unneeded services - removing auto-response banner messages - note: there are many more hardening steps – most of these are OS or application specific ...
Chapter 4
... - closing unneeded ports - turning off (or not installing) unneeded services - removing auto-response banner messages - note: there are many more hardening steps – most of these are OS or application specific ...
... - closing unneeded ports - turning off (or not installing) unneeded services - removing auto-response banner messages - note: there are many more hardening steps – most of these are OS or application specific ...
CSC 386 Operating Systems Concepts
... 1. Understand the role of an operating system as an intermediary between a user program (or, a user) and the computer hardware. Explain how different operating system components facilitate the role. 2. Compare different operating system design alternatives. 3. Identify their advantages and tradeoffs ...
... 1. Understand the role of an operating system as an intermediary between a user program (or, a user) and the computer hardware. Explain how different operating system components facilitate the role. 2. Compare different operating system design alternatives. 3. Identify their advantages and tradeoffs ...