Design of OSes
... • Programming interface to services provided by the OS • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machin ...
... • Programming interface to services provided by the OS • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machin ...
Windows
... Windows NT is the Microsoft Windows personal computer operating system designed for users and businesses needing advanced capability. Windows NT (which may originally have stood for "New Technology," although Microsoft doesn't say) are actually two products: Microsoft NT Workstation and Microsoft NT ...
... Windows NT is the Microsoft Windows personal computer operating system designed for users and businesses needing advanced capability. Windows NT (which may originally have stood for "New Technology," although Microsoft doesn't say) are actually two products: Microsoft NT Workstation and Microsoft NT ...
CST1215 Operating System Fundamentals
... 13. Identify advantages and disadvantages of MS-DOS including basic commands. 14. Demonstrate proficiency with the OS Command Line of Windows and Linux which include the ability to edit, rename, copy, move, delete and create files and directories, and to navigate folders. 15. Create simple batch pro ...
... 13. Identify advantages and disadvantages of MS-DOS including basic commands. 14. Demonstrate proficiency with the OS Command Line of Windows and Linux which include the ability to edit, rename, copy, move, delete and create files and directories, and to navigate folders. 15. Create simple batch pro ...
History of Unix OS - Seneca
... than one person to directly communicate with the computer. Although the OS can only work on one task at a time, a small piece of time (time slice) is dedicated to each task or user - this is referred to as “time-sharing”. Time sharing gives the illusion that the CPU is giving all the users its full ...
... than one person to directly communicate with the computer. Although the OS can only work on one task at a time, a small piece of time (time slice) is dedicated to each task or user - this is referred to as “time-sharing”. Time sharing gives the illusion that the CPU is giving all the users its full ...
LINUX Virtualization
... execution of special instructions. This allows a virtual machine (and its associated guest operating system) to run until the VMM regains control. Pacifica also amends address translation with host and guest memory management unit (MMU) tables. ...
... execution of special instructions. This allows a virtual machine (and its associated guest operating system) to run until the VMM regains control. Pacifica also amends address translation with host and guest memory management unit (MMU) tables. ...
Windows Kernel Internals Overview - reverse - reverse
... address space by mistake • Working set (physical memory “owned” by the process) • Access token (includes security identifiers) • Handle table for Win32 kernel objects • These are common to all threads in the process, but separate and protected between processes © Microsoft Corporation ...
... address space by mistake • Working set (physical memory “owned” by the process) • Access token (includes security identifiers) • Handle table for Win32 kernel objects • These are common to all threads in the process, but separate and protected between processes © Microsoft Corporation ...
ICOM 4015 - Advanced Programming
... The shell is not the kernel The shell is an ordinary user program It operates by creating processes that in turn do system calls or run programs It is the equivalent of COMMAND.COM in MS/DOS Shell programming is possible and is often done in OS utilities Extensions of shell programming include: ...
... The shell is not the kernel The shell is an ordinary user program It operates by creating processes that in turn do system calls or run programs It is the equivalent of COMMAND.COM in MS/DOS Shell programming is possible and is often done in OS utilities Extensions of shell programming include: ...
Operating Systems and Software
... Has too many bugs (mistakes in its programming that create problems for users) Too expensive ...
... Has too many bugs (mistakes in its programming that create problems for users) Too expensive ...
Chapter 1
... An operating system (OS) is a set of programs that manages computer hardware resources, and provides common services for application software. The operating system is the most important type of system software in a computer system. Without an operating system, a user cannot run an application progra ...
... An operating system (OS) is a set of programs that manages computer hardware resources, and provides common services for application software. The operating system is the most important type of system software in a computer system. Without an operating system, a user cannot run an application progra ...
CIT 500: IT Fundamentals
... File /etc/lsb_release identifies distribution. Family tree at http://en.wikipedia.org/wiki/File:Gldt.svg ...
... File /etc/lsb_release identifies distribution. Family tree at http://en.wikipedia.org/wiki/File:Gldt.svg ...
slides
... policy from mechanism. Policy: What will be done? Mechanism: How to do it? Example: timer is a mechanism for ensuring CPU protection, but deciding how long the timer is to be se is a a policy ...
... policy from mechanism. Policy: What will be done? Mechanism: How to do it? Example: timer is a mechanism for ensuring CPU protection, but deciding how long the timer is to be se is a a policy ...
History of Unix OS - Seneca
... 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” ...
over view of operating system
... load balancers Use of operating systems like Windows 95, client-side, have evolved into Linux and Windows XP, which can be clients and servers ...
... load balancers Use of operating systems like Windows 95, client-side, have evolved into Linux and Windows XP, which can be clients and servers ...
The Java Virtual Shell and Kernel
... Operating system shells generally fall into one of two categories: command line and graphical. Command line shells provide a command line interface (CLI) to the operating system, while graphical shells provide a graphical user interface (GUI). In either category the primary purpose of the shell is ...
... Operating system shells generally fall into one of two categories: command line and graphical. Command line shells provide a command line interface (CLI) to the operating system, while graphical shells provide a graphical user interface (GUI). In either category the primary purpose of the shell is ...
Lecture 01 Introduction
... • A microkerner architecture assigns only a few essential functions to the kernel, such as – Address spaces – Interprocess communication – Basic scheduling ...
... • A microkerner architecture assigns only a few essential functions to the kernel, such as – Address spaces – Interprocess communication – Basic scheduling ...
CS307-slides02
... built on top of lower layers. The bottom layer (layer 0), is the hardware; the highest (layer N) is the user interface. With modularity, layers are selected such that each uses functions ...
... built on top of lower layers. The bottom layer (layer 0), is the hardware; the highest (layer N) is the user interface. With modularity, layers are selected such that each uses functions ...
Heading Goes Here
... Easier to extend the OS—new services are added to user space and consequently do not require modification of the kernel and/or its recompilation Easier to maintain operating system code (enhancement, debugging, etc.) OS is easier to port from one hardware to another More security and reliabi ...
... Easier to extend the OS—new services are added to user space and consequently do not require modification of the kernel and/or its recompilation Easier to maintain operating system code (enhancement, debugging, etc.) OS is easier to port from one hardware to another More security and reliabi ...
Installing guest operating systems on VMWare and Linux Kernel
... Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers To install a quest operating system on a KVM virtual server, follow the steps in the Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers quick start guide, which ...
... Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers To install a quest operating system on a KVM virtual server, follow the steps in the Installing guest operating systems on Linux Kernel-based Virtual Machine (KVM) virtual servers quick start guide, which ...
Chapter 1: Field Guide to Identifying Computers in the Wild
... • Smartphones • PDAs • Portable video and music players • e-book readers ...
... • Smartphones • PDAs • Portable video and music players • e-book readers ...
operating system
... Batch systems Batch operating systems were designed in the 1950s to control mainframe computers. At that time, computers were large machines that used punched cards for input, line printers for output and tape drives for secondary storage media. Each program to be executed was called a job. A progra ...
... Batch systems Batch operating systems were designed in the 1950s to control mainframe computers. At that time, computers were large machines that used punched cards for input, line printers for output and tape drives for secondary storage media. Each program to be executed was called a job. A progra ...
Document
... Batch systems Batch operating systems were designed in the 1950s to control mainframe computers. At that time, computers were large machines that used punched cards for input, line printers for output and tape drives for secondary storage media. Each program to be executed was called a job. A progra ...
... Batch systems Batch operating systems were designed in the 1950s to control mainframe computers. At that time, computers were large machines that used punched cards for input, line printers for output and tape drives for secondary storage media. Each program to be executed was called a job. A progra ...
Understanding Computers, Chapter 5
... – Increasingly being used with PCs, servers, mainframes, and supercomputers – Is open-source software: has been collaboratively modified by volunteer programmers all over the world – Originally used a command line interface, most recent versions use a GUI – Strong support from mainstream companies, ...
... – Increasingly being used with PCs, servers, mainframes, and supercomputers – Is open-source software: has been collaboratively modified by volunteer programmers all over the world – Originally used a command line interface, most recent versions use a GUI – Strong support from mainstream companies, ...
Input and Output Optimization in Linux for Appropriate Resource
... create the I/O node, each one sought to optimize the Linux operating system through aggregation. These techniques are building on one another in order to achieve similar goals. Additionally, the last source concerning I/O scheduling built on the idea of the Linux anticipatory scheduler. This demonst ...
... create the I/O node, each one sought to optimize the Linux operating system through aggregation. These techniques are building on one another in order to achieve similar goals. Additionally, the last source concerning I/O scheduling built on the idea of the Linux anticipatory scheduler. This demonst ...