Systems programming-Research Essay Example | Topics and Well Written Essays - 2250 words

ashess programming-Research - Essay ExampleIn new(prenominal) words, the operating system serves as an mediator component between the user and the application-programs as well as between the application-programs and the computer hardware of the computer system. Thus, cosmos an intermediary between the users of computer applications and the resources of the computer systems, the OS offers the following three fundamental services to the users 1. Accepts user requests and workes them from the users program-applications and generates or displays the desired output results. 2. Loads, manages, as well as executes programs. 3. Manages the computer hardware resources such(prenominal) as the interfaces to networks and to other peripheral components of the computer system. The figure 1 given below schematically shows the correlation that exists among the various components of a computer system. Figure 1 The relationship of the Modern Operation agreement to other integrated components of the computer system. ... management System (FMS) Memory Management Process Control Management and Inter-process Communication Scheduling and Dispatching Communication Support, Network Management, and Communication Interfaces Secondary Storage Management Support for System Administration System Protection Management and Security Some OS also offer a program called system manager that is also commonly referred as a monitor or supervisory program that not only deals with the competing requests or conflicts but also serves as a general controller and justice for the overall computer system. Although some other system functions are oftentimes handled as separate blocks, such as the accounting and error handling, however they are more likely to appear under the blocks already listed. Many modern operating systems offer some features that combine computer commands into pseudo-programs that are known as shell scripts. Moreover, the batch-oriented systems possibly combine the indiv idual commands into a set of control statements that are to be penalize and interpreted without user intervention one at a time for the purpose of controlling the process of a multi-step task. Every step in the task executes an individual job. As for instance, on large IBM systems, the time of commands employed for this purpose, developed a language called Job Control Language (JCL). Furthermore to the standard OS commands, the shell scripting languages are conventionally used for providing branch and loop commands as well as for providing other features of the computer language. Shell scripts are used as if they were actual programs. It provides the following common features A behavior to redirect input/output data to a device that is different from the one used normally such as a disk file rather