Why system calls have to be implementing by a interpreter, Operating System

Assignment Help:

Q. What system calls have to be implementing by a command interpreter or shell in order to start a new process?

Answer: In the UNIX systems a fork system call followed by an exec system call need to be performed to start a new process. The fork call clones the presently executing process while the exec call overlays a new process based on a different executable over the calling process.


Related Discussions:- Why system calls have to be implementing by a interpreter

List the task regions in the spiral model, List the task regions in the Spi...

List the task regions in the Spiral model.  Customer communication - In this region it is suggested to set up customer communication.  Planning - All planning activities

Determine a critical section is a program segment, Determine a critical sec...

Determine a critical section is a program segment  Critical section is where shared resources are accessed

Why is it significant to balance file system I/O among disks, Q. Why is it ...

Q. Why is it significant to balance file system I/O among the disks as well as controllers on a system in a multitasking environment? Answer: A system can perform mere

Operating systems concepts, The code should be nicely formatted with plenty...

The code should be nicely formatted with plenty of comments. It should be easy to read, properly The summary section should include three parts: (1) Record the running t

What happens when you execute a program in unix, When you run a program on ...

When you run a program on your UNIX system, the system prepares a special environment for that program. This environment owns everything needed for the system to execute the progra

Explain fifo page replacement, Explain FIFO page replacement A FIFO rep...

Explain FIFO page replacement A FIFO replacement algorithm associates with every page the time when that page was brought into memory. When a page must be changed, the oldest p

What are the benefits of multiprogramming?, What are the benefits of multip...

What are the benefits of multiprogramming? Responsiveness : Multithreading is an interactive application may permit a program to continue running even if part of it is block

What are the various file operations, What are the various file operations?...

What are the various file operations? The six basic file operations are Creating a file Reading a file Writing a file Repositioning within a file Tr

Explain the thread local storage (tls), Explain the Thread Local Storage (T...

Explain the Thread Local Storage (TLS)    Windows NT provides unique functions for per-thread data management. Thread local storage (TLS) is a concept defined in NT so develope

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