Lec1 Intro
... The Unix OS was developed (based on Multics & CTSS operating systems) by Ken Thompson at the AT&T Bell Laboratories in 1969. He wanted to create an multi-user operating system to run “space travel” game. Ken’s philosophy was to create an operating system with commands or “utilities” that would do on ...
... The Unix OS was developed (based on Multics & CTSS operating systems) by Ken Thompson at the AT&T Bell Laboratories in 1969. He wanted to create an multi-user operating system to run “space travel” game. Ken’s philosophy was to create an operating system with commands or “utilities” that would do on ...
Computer Operating Systems
... operating systems are DOS,OS/2, and Windows, but others are available, such as Linux. As a user, you normally interact with the operating system through a set of commands. For example, the DOS operating system contains commands such as COPY and RENAME for copyingfiles and changing the names of files ...
... operating systems are DOS,OS/2, and Windows, but others are available, such as Linux. As a user, you normally interact with the operating system through a set of commands. For example, the DOS operating system contains commands such as COPY and RENAME for copyingfiles and changing the names of files ...
Chapter One
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
03-os-design
... UNIX was conventionally a monolithic design. Linux started as a monolithic kernel but with the increasing use of modules, the kernel can be made smaller and less monolithic ...
... UNIX was conventionally a monolithic design. Linux started as a monolithic kernel but with the increasing use of modules, the kernel can be made smaller and less monolithic ...
Lecture 1 Overview and History
... manipulation and storage devices rather than machines that perform arithmetic operations. Networking becomes very important, and as sharing becomes an important part of the experience so does security. Operating systems become more sophisticated. Start putting back features present in the old ti ...
... manipulation and storage devices rather than machines that perform arithmetic operations. Networking becomes very important, and as sharing becomes an important part of the experience so does security. Operating systems become more sophisticated. Start putting back features present in the old ti ...
Operating System
... information • UNIX: –Can be used on many computer system types and platforms • Red Hat Linux: –Can manage a cluster of up to eight servers • Mac OS X Server: ...
... information • UNIX: –Can be used on many computer system types and platforms • Red Hat Linux: –Can manage a cluster of up to eight servers • Mac OS X Server: ...
doc
... Computer resources include memory, processing, storage, input & output devices. The OS also monitors system performance, schedules jobs, and provides some security for the computer. User Interface: users interact with application programs and computer hardware through a user interface. In older syst ...
... Computer resources include memory, processing, storage, input & output devices. The OS also monitors system performance, schedules jobs, and provides some security for the computer. User Interface: users interact with application programs and computer hardware through a user interface. In older syst ...
Distributed Systems
... distribution (take a component, break into smaller pieces, spread these components across the system Example: DNS – Domain Name Service. Division in (non-overlapping) zones – domains ...
... distribution (take a component, break into smaller pieces, spread these components across the system Example: DNS – Domain Name Service. Division in (non-overlapping) zones – domains ...
Operating System Objectives and Functions
... details of those functions - provides services to the next higher level ...
... details of those functions - provides services to the next higher level ...
Ch1 Introduction to the Linux Kernel
... The kernel typically resides in an elevated system state compared to normal user applications This includes a protected memory space and full access to the hardware This system state and memory space is collectively referred to as kernel-space ...
... The kernel typically resides in an elevated system state compared to normal user applications This includes a protected memory space and full access to the hardware This system state and memory space is collectively referred to as kernel-space ...
Operating Systems - KSU Web Home
... A text-oriented program that handles user interaction with the system: Command-line interpreter The most common shell on Linux is ‘bash’ On Windows, the command window ...
... A text-oriented program that handles user interaction with the system: Command-line interpreter The most common shell on Linux is ‘bash’ On Windows, the command window ...
Operating Systems: Principles and Practice, Introduction
... • Multiple users on computer at same time – Multiprogramming: run multiple programs at same time – Interactive performance: try to complete everyone’s tasks quickly – As computers became cheaper, more important to optimize for user time, not computer time ...
... • Multiple users on computer at same time – Multiprogramming: run multiple programs at same time – Interactive performance: try to complete everyone’s tasks quickly – As computers became cheaper, more important to optimize for user time, not computer time ...
system call - efreidoc.fr
... series of independent processes called servers each server provides a set of services to other parts of the operating system or to user programs via a defined interface of service requests requesting process (client) requests service by sending a message to server service usually involves messages b ...
... series of independent processes called servers each server provides a set of services to other parts of the operating system or to user programs via a defined interface of service requests requesting process (client) requests service by sending a message to server service usually involves messages b ...
Thomas Edison Associates Report on how to install and optimizing
... The basic function of an Operating System is to control all the Hardware and Software installed in a computer. We can't even install a software without the help of an Operating System. The Operating System acts as a middleman between the user and the computer. It allows the user to install software ...
... The basic function of an Operating System is to control all the Hardware and Software installed in a computer. We can't even install a software without the help of an Operating System. The Operating System acts as a middleman between the user and the computer. It allows the user to install software ...
What is an Operating System?
... Each processor runs and identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP. Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work ...
... Each processor runs and identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP. Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work ...
operating-systems-7th-edition-william-stallings
... 2.6 Process isolation: The operating system must prevent independent processes from interfering with each other's memory, both data and instructions. Automatic allocation and management: Programs should be dynamically allocated across the memory hierarchy as required. Allocation should be transpare ...
... 2.6 Process isolation: The operating system must prevent independent processes from interfering with each other's memory, both data and instructions. Automatic allocation and management: Programs should be dynamically allocated across the memory hierarchy as required. Allocation should be transpare ...
Solution to assignment 2(B)
... Describe two difficulties that you think could arise with such a scheme. Answer: The data required by the operating system (passwords, access controls, accounting information, and so on) would have to be stored in or passed through unprotected memory and thus be accessible to unauthorized users. Que ...
... Describe two difficulties that you think could arise with such a scheme. Answer: The data required by the operating system (passwords, access controls, accounting information, and so on) would have to be stored in or passed through unprotected memory and thus be accessible to unauthorized users. Que ...
Distribution…
... Different clients may mount the servers in different places. Different clients may have different views of the file systems ...
... Different clients may mount the servers in different places. Different clients may have different views of the file systems ...
Abstract View of System Components
... • The microkernel has a small footprint and only provides basic or minimal services like, ipc, some memory management, low-level scheduling (dispatching) and low level I/O . • All other services should be implemented as user level services. • This makes the system highly modular, with well-defined i ...
... • The microkernel has a small footprint and only provides basic or minimal services like, ipc, some memory management, low-level scheduling (dispatching) and low level I/O . • All other services should be implemented as user level services. • This makes the system highly modular, with well-defined i ...
Assignment 3
... system fetches the page containing the address and restarts the faulting instruction, which now completes success fully. ...
... system fetches the page containing the address and restarts the faulting instruction, which now completes success fully. ...
why uclinux? - Wireless Africa
... based on microprocessors lacking MMU could not take advantage of Linux uCliknux was started by Arcturus networks in 1997 Implements Linux on MMU-less processors Publicly released back into open source as alternative OS for the Palm Pilot in February 1998 Ported to ARM, MIPS, SPARC, Hitachi SH, Motor ...
... based on microprocessors lacking MMU could not take advantage of Linux uCliknux was started by Arcturus networks in 1997 Implements Linux on MMU-less processors Publicly released back into open source as alternative OS for the Palm Pilot in February 1998 Ported to ARM, MIPS, SPARC, Hitachi SH, Motor ...
Introduction and History Sarah Diesburg Operating Systems CS 3430
... Batch system: collects a batch of jobs before processing them and printing out results ...
... Batch system: collects a batch of jobs before processing them and printing out results ...
Operating System
... – Each process is allocated a “slice” of time in the CPU. – When the time runs out, the process is interrupted, and another process is loaded into the CPU. • The act of giving each process a small slice of time to run is called time slicing. ...
... – Each process is allocated a “slice” of time in the CPU. – When the time runs out, the process is interrupted, and another process is loaded into the CPU. • The act of giving each process a small slice of time to run is called time slicing. ...