Ch2. Operating System Structures
... extends to defending external I/O devices from invalid access attempts ...
... extends to defending external I/O devices from invalid access attempts ...
slides - network systems lab @ sfu
... When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
... When multiple users or multiple jobs running concurrently, resources must be allocated to each of them ...
What is an operating system?
... Concurrent threads may interfere one with another. This leads to the necessity for resource protection by using user/supervisor modes. For example, the I/O instructions are privileged, it can be run only in supervisor mode. The system calls are making the transfer from user mode into supervisor mode ...
... Concurrent threads may interfere one with another. This leads to the necessity for resource protection by using user/supervisor modes. For example, the I/O instructions are privileged, it can be run only in supervisor mode. The system calls are making the transfer from user mode into supervisor mode ...
Presentation4
... • could not sell Unix • gave a copy away free to any developer who wanted to use it! • many universities contributed to its development ...
... • could not sell Unix • gave a copy away free to any developer who wanted to use it! • many universities contributed to its development ...
SE 4C03 Winter 2004
... confidentiality of the users. However, it can sometimes do more damage than stealing e-mail passwords. For an example, if a Trojan is equipped with DEL, DELTREE or FORMAT command, just imagine what would happen if it formats your C drive without you knowing what is coming. Even though, Trojans are l ...
... confidentiality of the users. However, it can sometimes do more damage than stealing e-mail passwords. For an example, if a Trojan is equipped with DEL, DELTREE or FORMAT command, just imagine what would happen if it formats your C drive without you knowing what is coming. Even though, Trojans are l ...
Unix/Linux: History and Philosophy
... ∗ The memory allocated to a process is private to the process, that is, other programs cannot see the code and data for a given program unless special permission is granted ∗ The files that belong to a certain user may not be visible to other users unless permission is granted · The superuser has pe ...
... ∗ The memory allocated to a process is private to the process, that is, other programs cannot see the code and data for a given program unless special permission is granted ∗ The files that belong to a certain user may not be visible to other users unless permission is granted · The superuser has pe ...
Lecture 11 Operating Systems • Free - VU LMS
... The OS provides all apps with a straight-forward and consistent interface to the HW ...
... The OS provides all apps with a straight-forward and consistent interface to the HW ...
fund8que.doc
... __ 5. A file manager is responsible for formatting and copying disks. __ 6. Passwords and user ID codes may be used by the operating system for monitoring system security. __ 7. Popular operating systems in use today include UNIX, DOS, PASCAL, and Windows 98. __ 8. New versions of an operating syste ...
... __ 5. A file manager is responsible for formatting and copying disks. __ 6. Passwords and user ID codes may be used by the operating system for monitoring system security. __ 7. Popular operating systems in use today include UNIX, DOS, PASCAL, and Windows 98. __ 8. New versions of an operating syste ...
OS imp structures
... • Important: Machine-dependent vs independent layers – Easier migration between platforms – Easier evolution of hardware platform ...
... • Important: Machine-dependent vs independent layers – Easier migration between platforms – Easier evolution of hardware platform ...
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 ...
Unit OS1: The Evolution of Operating Systems
... Storage management – File system Access to external storage media Device management Hiding of hardware dependencies ...
... Storage management – File system Access to external storage media Device management Hiding of hardware dependencies ...
Operating System
... CS115 Operating Systems L-T-P-Cr: 3-1-0-4 Objectives: To give in-depth concept of any general Operating System. Outcomes: Students should be able to use his knowledge to develop/design any new Operating System. UNIT I Lectures: 14 Introduction: Introduction to OS. Operating system functions, evaluat ...
... CS115 Operating Systems L-T-P-Cr: 3-1-0-4 Objectives: To give in-depth concept of any general Operating System. Outcomes: Students should be able to use his knowledge to develop/design any new Operating System. UNIT I Lectures: 14 Introduction: Introduction to OS. Operating system functions, evaluat ...
Operating Systems
... • Mac OS – runs on an Apple Macintosh computer • Microsoft Windows – over 90 percent of users have a Windows OS • UNIX and Linux • UNIX - one of the first operating systems ever written; it was designed to work on powerful business and scientific computers • Linux – free and can be downloaded from t ...
... • Mac OS – runs on an Apple Macintosh computer • Microsoft Windows – over 90 percent of users have a Windows OS • UNIX and Linux • UNIX - one of the first operating systems ever written; it was designed to work on powerful business and scientific computers • Linux – free and can be downloaded from t ...
System Software and Application Software Operating System
... It introduces major changes to the operating system’s platform and user interface to improve its user experience on devices such as tablets. In particular, these changes included a touch-optimized Windows shell, the Start screen, a new platform for developing apps with an emphasis on touchscreen inp ...
... It introduces major changes to the operating system’s platform and user interface to improve its user experience on devices such as tablets. In particular, these changes included a touch-optimized Windows shell, the Start screen, a new platform for developing apps with an emphasis on touchscreen inp ...
FileSystems
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
Network Access Control
... Copyright 2008, The Trustees of Indiana University. This work is the intellectual property of the author. Permission is granted for this material to be shared for noncommercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that ...
... Copyright 2008, The Trustees of Indiana University. This work is the intellectual property of the author. Permission is granted for this material to be shared for noncommercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that ...
H 10.3. File-System Interface
... UID in Unix, SID in Windows Most systems implement owner attributes by managing a list of user names and associated user identifiers (user IDS). In Windows NT parlance, this is a Security ID (SID). These numerical IDS are unique, one per user. When a user logs in to the system, the authentication st ...
... UID in Unix, SID in Windows Most systems implement owner attributes by managing a list of user names and associated user identifiers (user IDS). In Windows NT parlance, this is a Security ID (SID). These numerical IDS are unique, one per user. When a user logs in to the system, the authentication st ...
Chapter 1 - OS Overview
... • Cannot be ignored by users or system administrators • Organizations should have published policies clearly stating which actions will or will not be condoned – individual needs for privacy – organization’s need to protect proprietary information – public’s right to know as illustrated in freedom o ...
... • Cannot be ignored by users or system administrators • Organizations should have published policies clearly stating which actions will or will not be condoned – individual needs for privacy – organization’s need to protect proprietary information – public’s right to know as illustrated in freedom o ...
Lecture 2
... • Many types of resources - CPU cycles, main memory, file storage, and I/O devices. ...
... • Many types of resources - CPU cycles, main memory, file storage, and I/O devices. ...
Official Syllabus
... The following books give specific details about the internals of Linux and Microsoft Windows. – Linux Kernel Development by Robert Love. – Microsoft Windows Internals (Part 1 and 2) (6th edition) by Mark E. Russinovich and David A. Solomon. The following book is an excellent introduction to using th ...
... The following books give specific details about the internals of Linux and Microsoft Windows. – Linux Kernel Development by Robert Love. – Microsoft Windows Internals (Part 1 and 2) (6th edition) by Mark E. Russinovich and David A. Solomon. The following book is an excellent introduction to using th ...
Introduction to Object Technology
... host operating system can support a number of virtual machines (VM) each has the characteristics of a particular OS and, in some versions of virtualization, the characteristics of a particular ...
... host operating system can support a number of virtual machines (VM) each has the characteristics of a particular OS and, in some versions of virtualization, the characteristics of a particular ...
OS-F2
... and perception. All submitted work and activities should be genuine reflections of individual achievement from which the student should derive personal satisfaction and a sense of accomplishment. Plagiarism and cheating subvert these goals and will be treated according to the policy stated in the St ...
... and perception. All submitted work and activities should be genuine reflections of individual achievement from which the student should derive personal satisfaction and a sense of accomplishment. Plagiarism and cheating subvert these goals and will be treated according to the policy stated in the St ...
