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

Mutation - canonical genetic algorithm, Mutation: However it may appea...

Mutation: However it may appear that the above recombinations are a little arbitrary that especially as points defining whether crossover and inversion occur are chosen random

Control of program, Example:                         CMP    AX,BX    ;...

Example:                         CMP    AX,BX    ; compare instruction: sets flags JE        THERE    ; if equal then skip the ADD instruction  ADD  AX, 02    ; add 02

Draw the logic diagram of 4-bit twisted ring counters, Draw the logic diagr...

Draw the logic diagram of 4-bit Twisted Ring counters and explain its operation with the help of timing diagram. Ans: Twisted ring counter (4 BIT): We ready know that shi

Define a B- tree of order m, Define a B tree of order m. B Tree of orde...

Define a B tree of order m. B Tree of order m  A balanced multiway search tree of order m in which every non root node having at least m/2 keys is known as a B-Tree of order

What is pointers function, Visual basic applications have very rich and fle...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

Describe data transfer instructions, Q. Describe Data Transfer Instructions...

Q. Describe Data Transfer Instructions? These instructions transfer data from one location in the computer to another location without altering the data content. Most common tr

Explain the disadvantages off-the-shelf, Explain the disadvantages Off-the...

Explain the disadvantages Off-the-shelf -  can be over-complex since it tries to cover as many characteristics as possible (for example most users of Word only utilise about

Storing a word in memory - computer architecture, Storing a word in Memory:...

Storing a word in Memory: That is similar process with fetching a word from memory. The required address is loaded into the MAR After that data to be written are lo

Explain the propagation delay characteristics for digital ic, Explain the ...

Explain the Propagation Delay characteristics for digital IC's. Ans: Propagation Delay: - The speed of a digital IC operation is given in terms of propagation delay ti

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