Swear as Mechanism to Pain

In: English and Literature

Submitted By unclep38
Words 2421
Pages 10
Chapter
2

OPERATING
SYSTEM
CONCEPTS

SYS-ED/
Computer
Education
Techniques, Inc.

Solaris System Administration: Introduction

Operating System Concepts

Objectives
You will learn:


Operating system components.



Solaris usage of processes.



File management and file systems.



Use of the Solaris Management Console.

SYS-ED/COMPUTER EDUCATION TECHNIQUES, INC. (Solaris – System Admin: Intro - 6.5)

Ch 2: Page i

Solaris System Administration: Introduction
1

Operating System Concepts

Operating System: Definition

An operating system is the set of programs that controls a computer.
The core of the operating system is the kernel. The kernel is a control program that functions in privileged state that allows all hardware instructions to be executed. It reacts to interrupts from external devices and to service requests and traps from processes. The kernel creates and terminates processes and responds to requests for service.
Operating systems are resource managers. The main resource is computer hardware in the form of processors, storage, input/output devices, communication devices, and data.
Operating system functions include:


Implementing the user interface.



Sharing hardware among users.



Allowing users to share data among themselves.



Preventing users from interfering with one another.



Scheduling resources among users.



Facilitating input/output.



Recovering from errors.



Accounting for resource usage.



Facilitating parallel operations.



Organizing data for secure and rapid access.



Handling network communications.

Processes run applications, which are linked together with libraries that perform standard services. The kernel supports the processes by providing a path to the peripheral devices. The kernel responds to
service…...

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