Operating Systems Autumn 2003
... Systems, 2nd Edition, Prentice Hall, 2001 D. Bovet, M. Cesati, Understanding the Linux Kernel, First Edition, O’Reilly, 2001 ...
... Systems, 2nd Edition, Prentice Hall, 2001 D. Bovet, M. Cesati, Understanding the Linux Kernel, First Edition, O’Reilly, 2001 ...
PPT
... Both Linux and later versions of Windows have brought many advanced OS concepts to the desktop Multiprogramming first added back in because people like to do more than one thing at a time (spool job to printer and continue typing) Memory protection added back in to protect against buggy applicat ...
... Both Linux and later versions of Windows have brought many advanced OS concepts to the desktop Multiprogramming first added back in because people like to do more than one thing at a time (spool job to printer and continue typing) Memory protection added back in to protect against buggy applicat ...
System Programs - Bilkent University Computer Engineering
... – Error detection and handling – OS needs to be constantly aware of possible errors • May occur in the CPU and memory hardware, in I/O devices, in user program • For each type of error, OS should take the appropriate action to ensure correct and consistent computing ...
... – Error detection and handling – OS needs to be constantly aware of possible errors • May occur in the CPU and memory hardware, in I/O devices, in user program • For each type of error, OS should take the appropriate action to ensure correct and consistent computing ...
Chapter 2: Operating-System Structures
... System programs provide a convenient environment for program development and execution. They can be divided into: – File manipulation (create, delete, copy, rename, print, list, …) – Status information (date, time, amount of available memory, disk space, who is logged on, …) – File modification (tex ...
... System programs provide a convenient environment for program development and execution. They can be divided into: – File manipulation (create, delete, copy, rename, print, list, …) – Status information (date, time, amount of available memory, disk space, who is logged on, …) – File modification (tex ...
Module 3: Operating
... • The program that reads and interprets control statements is called variously: – control-card interpreter – command-line interpreter – shell (in UNIX) Its function is to get and execute the next command statement. Operating System Services • Program execution – system capability to load a program i ...
... • The program that reads and interprets control statements is called variously: – control-card interpreter – command-line interpreter – shell (in UNIX) Its function is to get and execute the next command statement. Operating System Services • Program execution – system capability to load a program i ...
Intro and using Linux Commands
... cp – copies files from one directory to another mv – moves files from one directory to another ...
... cp – copies files from one directory to another mv – moves files from one directory to another ...
Unit OS1: The Evolution of Operating Systems
... Single user Multiuser/Timesharing Systems Management of multiple simultaneous users interconnected via terminals Fair resource management: CPU scheduling, spooling, mutual exclusion Real-Time Systems (process control systems) Management of time-critical processes High requirements with respect to re ...
... Single user Multiuser/Timesharing Systems Management of multiple simultaneous users interconnected via terminals Fair resource management: CPU scheduling, spooling, mutual exclusion Real-Time Systems (process control systems) Management of time-critical processes High requirements with respect to re ...
Slides
... System programs provide a convenient environment for program development and execution. They can be divided into: – File manipulation (create, delete, copy, rename, print, list, …) – Status information (date, time, amount of available memory, disk space, who is logged on, …) – File modification (tex ...
... System programs provide a convenient environment for program development and execution. They can be divided into: – File manipulation (create, delete, copy, rename, print, list, …) – Status information (date, time, amount of available memory, disk space, who is logged on, …) – File modification (tex ...
user mode
... 1. System call traps to the kernel (kernel mode) 2. Kernel determines service routine required 3. Kernel services the call. 4. Control is returned to user program (user mode) ...
... 1. System call traps to the kernel (kernel mode) 2. Kernel determines service routine required 3. Kernel services the call. 4. Control is returned to user program (user mode) ...
Batching processing
... facilities.It keeps records of all the files: location (directory, folder, sub-directory, path), access permission and history (file descriptor), free available space, etc. ...
... facilities.It keeps records of all the files: location (directory, folder, sub-directory, path), access permission and history (file descriptor), free available space, etc. ...
4 - Operating System Basics.ppt
... Providing a User Interface • User interface – How a user interacts with a computer – Require different skill sets ...
... Providing a User Interface • User interface – How a user interacts with a computer – Require different skill sets ...
Operating System Design
... Acrobat is an interpreter for PDF operations remote interpretation possible) from exokernel design: read/write system calls do compare/generate operations on every object’s checksum no reliable network protocols needed client-server systems must have multiple servers transparent to the users arc ...
... Acrobat is an interpreter for PDF operations remote interpretation possible) from exokernel design: read/write system calls do compare/generate operations on every object’s checksum no reliable network protocols needed client-server systems must have multiple servers transparent to the users arc ...
Lecture 11 Operating Systems • Free - VU LMS
... an OS Then came computer operators who ran multiple programs for multiple users one after the other – still, no need for an OS Later computers became powerful, & became able to run multiple programs, simultaneously. That’s when the need for OS’es arose for: – Managing the resources of the computers ...
... an OS Then came computer operators who ran multiple programs for multiple users one after the other – still, no need for an OS Later computers became powerful, & became able to run multiple programs, simultaneously. That’s when the need for OS’es arose for: – Managing the resources of the computers ...
System Software and Operating Systems
... in that they execute two or more applications running simultaneously (actually they switch back and forth between the applications) Older single-tasking operating systems could only do one thing at a time ...
... in that they execute two or more applications running simultaneously (actually they switch back and forth between the applications) Older single-tasking operating systems could only do one thing at a time ...
OS Services #1 File
... the operating-system design. One approach is for the program to ask the user for the names of the two files. In an interactive system, this approach will require a sequence of system calls, first to write a prompting message on the screen, and then to read from the keyboard the characters that defin ...
... the operating-system design. One approach is for the program to ask the user for the names of the two files. In an interactive system, this approach will require a sequence of system calls, first to write a prompting message on the screen, and then to read from the keyboard the characters that defin ...
CMSC 312 Introduction to Operating System Syllabus
... Computer systems structure, process management (threads / scheduling / synchronization / deadlocks), memory management, storage management (filesystem interface, I/O systems), distributed systems. Students will work in teams to design and implement an operating system simulation. 2.0 – Course Struct ...
... Computer systems structure, process management (threads / scheduling / synchronization / deadlocks), memory management, storage management (filesystem interface, I/O systems), distributed systems. Students will work in teams to design and implement an operating system simulation. 2.0 – Course Struct ...
File System
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights... McGraw-Hill Technology Education
... • Command line interfaces – Older interface • DOS, Linux, UNIX ...
... • Command line interfaces – Older interface • DOS, Linux, UNIX ...
Operating- System Structures
... List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user-level programs to provide these services. Answer: a. Program execution. The operating system loads the contents (or sections) of a file ...
... List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user-level programs to provide these services. Answer: a. Program execution. The operating system loads the contents (or sections) of a file ...
Introduction
... that is currently executing. • The actual contents of all programs are initially stored in persistent storage, such as a hard drive. • In order to be executed, a program must be loaded into random-access memory (RAM) and uniquely identified as a process. • In this way, multiple copies of the same pr ...
... that is currently executing. • The actual contents of all programs are initially stored in persistent storage, such as a hard drive. • In order to be executed, a program must be loaded into random-access memory (RAM) and uniquely identified as a process. • In this way, multiple copies of the same pr ...
7.3.3. Computer System Structures
... The Android runtime environment includes a core set of libraries as well as the Dalvik virtual machine. Google has designed a separate Android API for Java development. The Java class files are first compiled to Java bytecode and then translated into an executable file that runs on the Dalvik ...
... The Android runtime environment includes a core set of libraries as well as the Dalvik virtual machine. Google has designed a separate Android API for Java development. The Java class files are first compiled to Java bytecode and then translated into an executable file that runs on the Dalvik ...
Introduction to Object Technology
... large kernel including scheduling, file system, networking, device drivers, memory management single process with all elements sharing the same address space ...
... large kernel including scheduling, file system, networking, device drivers, memory management single process with all elements sharing the same address space ...
Linux Concepts and key ideas
... What is an operating system? What is a kernel? An operating system is made up of software instructions that lie between the computer hardware and the application software. At the center is the kernel, which functions to control processes, handles memory management, and manages software and hardware ...
... What is an operating system? What is a kernel? An operating system is made up of software instructions that lie between the computer hardware and the application software. At the center is the kernel, which functions to control processes, handles memory management, and manages software and hardware ...
The LINUX Operating System
... • an OS initially created by Linus Torvalds (Finland) and a team working over the Internet; • developed from MINIX, a small Unix system; • An open and free operating system, adaptable to meet individuals needs; ...
... • an OS initially created by Linus Torvalds (Finland) and a team working over the Internet; • developed from MINIX, a small Unix system; • An open and free operating system, adaptable to meet individuals needs; ...
Plan 9 from Bell Labs
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Plan 9 from Bell Labs is a distributed operating system, originally developed by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002. It takes some of the principles of Unix, developed in the same research group, but extends these to a networked environment with graphics terminals.In Plan 9, virtually all computing resources, including files, network connections, and peripheral devices, are represented through the file system rather than specialized interfaces. A unified network protocol called 9P ties a network of computers running Plan 9 together, allowing them to share all resources so represented.The name Plan 9 from Bell Labs is a reference to the Ed Wood 1959 cult science fiction Z-movie Plan 9 from Outer Space. Also, Glenda, the Plan 9 Bunny, is presumably a reference to Wood's film Glen or Glenda. The system continues to be used and developed by operating system researchers and hobbyists.