Write a linux terminal shell, Computer Engineering

Assignment Help:

Write a Linux terminal shell. Your shell should act similar to bash. At a high level, your shell should accomplish the following:

1. Print a prompt when waiting for input from the user.

2. Continuously accept commands from the user and execute them until the user exits the shell.

_ If the command the user enters does not exist on the system, an error message should be displayed.

3. Accept the change directory command, and appropriately change the current working directory.

_ If the directory the user enters does not exist, an error message should be displayed.

4. Your shell must keep a history of the last 10 commands executed. The user should be able to cycle through the history using the up and down arrow keys.

5. Your shell must accept the pipe "|" operator. This will execute two commands, where the first process will output to the input of the second process.

6. Accept an exit command that will close your shell properly.

7. Ignore characters such as the left arrow and right arrow.

8. Properly handle when the user types delete or backspace keys.


Related Discussions:- Write a linux terminal shell

Performance instrumentation in parallel computer, Performance instrumentati...

Performance instrumentation focuses on how to resourcefully collect information about computation of parallel computer. Method of instrumentation mostly tries to capture informatio

Interaction design and human–computer interaction, You should now have a re...

You should now have a reasonably clear understanding of what is meant by interaction design. However, there are several other terms which are often used to refer to particular aspe

Determine the output of SR flip flop when S=1 and R=0, The output of SR fli...

The output of SR flip flop when S=1, R=0 is ? Ans. When for the SR flip-flop S=set i/p R=reset i/p, as S=1, R=0, Flip-flop will be set means output will be one.

How to load dos from hard disk, Q. How to Load DOS from Hard Disk? To L...

Q. How to Load DOS from Hard Disk? To Load DOS from the Hard Disk of your computer, follow these steps: 1. Turn on the power ON/OFF switch of the CPU unit of your PC the pow

Explain call and return statements, Q. Explain Call and Return Statements? ...

Q. Explain Call and Return Statements? CALL:       CALL X    Procedure Call to procedure/function named X   CALL instruction causes the following to happen:  1.  Decre

2 way staircase switch-truth table logic equation & circuit, A staircase li...

A staircase light is controlled by two switches one at the top of the stairs and another at the bottom of stairs a. Make a truth table for this system. b. Write the lo

Explain about instruction register and flags, Q. Explain about Instruction ...

Q. Explain about Instruction Register and Flags? The Instruction Register: It comprises the operation code (opcode) and addressing mode bits of the instruction. It assists in

What is server in sap terminology, What is Server in SAP terminology? ...

What is Server in SAP terminology? A component can having of one process or a group and is then known as the server for the respective service.

Transition table for sequential circuits, sovling questions on transition t...

sovling questions on transition table for sequential circuits

Explain working of digital camera, Q. Explain working of Digital camera? ...

Q. Explain working of Digital camera? A Digital camera is a camera which captures and stores still images and video (Digital Video Cameras) as digital data in place of on photo

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