Execute a command in operating system, Basic Computer Science

Assignment Help:

Execute a command in operating system:

In order to execute a command OS does the

following steps:

 

  • It accepts a command from a user through mouse clicks or from the keyboard. Through a port number it is able to recognize what is the source of input. 
  • It must interpret these commands and take actions accordingly.
  • It must provide a file system that can interpret the name of the program being requested and determine the location of  the file on secondary storage device for example. 
  • It must read the appropriate blocks from the device into memory. Only then can the operating system transfer control to the program being executed. 

In case of multiple programs executing simultaneously, CPU does some extra jobs to allot  the CPU time in an equitable way to each program, and also maintain the integrity of each program, etc.

 


Related Discussions:- Execute a command in operating system

System administration and linux/unix, Write a system using script written i...

Write a system using script written in asuitable scripting language to automate taking a basic linux server instance and provisioning it with particular applications based on its I

Rental model, Rental model: This has come into picture as Software as...

Rental model: This has come into picture as Software as a Service (SaaS) and Platform as a Service (PaaS) models have evolved over a period of time. Here, the buyer need not

What are the commonly used input/output functions in c, Problem 1 What ...

Problem 1 What is the significance of the keyword 'extern' in a function declaration? Explanation of significance of Keyword 'extern' in function declaration Probl

Block matching algorithm, I am using block matching algorithm to get the mo...

I am using block matching algorithm to get the motion vectors, now, how can I get the depth map/depth value from the motion vectors?

Macro Libraries, One of the facilities that the use of macros provides is t...

One of the facilities that the use of macros provides is the formation of libraries, which are sets of macros which can be included in a program from a different file. The formatio

Central processing unit, The Central Processing Unit : Central Processing U...

The Central Processing Unit : Central Processing Unit (CPU) is the brain of the computer. The intricate electronic circuitry of the CPU performs the computer's tasks of handling d

Artificial intelligence-search in problem solving, Search in Problem Solvin...

Search in Problem Solving If Artificial Intelligence can notify the extra sciences about something, it is about trouble solving and, in exacting, how to search for solutions to

Sequential-access memory device, Sequential-access memory device: A  S...

Sequential-access memory device: A  Sequential-access  memory device reads data in sequence. In other words, information on a serial device can only be retrieved in the same s

What is a socket, QUESTION (a) You have been asked to design and implem...

QUESTION (a) You have been asked to design and implement a chat application. Which protocol would you used TCP or UDP? Justify your answer. (b) Explain why multithreading is

Software basics, SOFTWARE BASICS: Software is a generic term covering ...

SOFTWARE BASICS: Software is a generic term covering the concepts, procedures and instructions which cause the computer systems to accomplish the required job, Generally, soft

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd