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

Forall statement in fortran, Q. FORALL Statement in fortran? The FORALL...

Q. FORALL Statement in fortran? The FORALL statement permits for more common assignments to sections of an array. A FORALL statement has general form.   FORALL ( triplet, ..

Paged virtual memory - computer architecture, Paged virtual memory: Mo...

Paged virtual memory: Mostly all implementations of virtual memory divide the virtual address space of an application program into pages; a page is a block that contains conti

C program , minimum number of shelves

minimum number of shelves

Gustafsons law, Amdahl's law is suitable for applications where response ti...

Amdahl's law is suitable for applications where response time is critical. On the other hand, there are a lot of applications which need that accuracy of the resultant output shoul

Why do you create parameters, Parameters are like script variables. They ar...

Parameters are like script variables. They are used to vary input to the server and to imitate real users. Dissimilar sets of data are sent to the server every time the script is r

Show SNMPs representation in ASN.1 syntax, An SNMP integer whose value is 2...

An SNMP integer whose value is 200 has to be transmitted. Show its representation in ASN.1 syntax. An ASN.1 transfer syntax describes how values of ASN.1 types are unambiguousl

Operating system, explain network operating system and design issues?

explain network operating system and design issues?

Using the editor or debugger, Write a script that will read from a file x a...

Write a script that will read from a file x and y data points in the following format: x   0    y  1 x  1.3  y  2.2 x  2.2  y  6 x  3.4  y  7.4 The format of each line in the

What is called pcp, What is called PCP? The phenomenon of un-decidabili...

What is called PCP? The phenomenon of un-decidability is not confined to problems concerning automata. An un-decidable problem concerning on simple manipulation of strings is k

Determine flip-flops that are required for mod–16 counter, How many Flip-Fl...

How many Flip-Flops are required for mod-16 counter? Ans. 4 flip-flops is required for Mod-16 Counter. For Mod-m Counter, we require N flip-flops where N is selected to be the

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