Accept commands from the user, Computer Engineering

Assignment Help:

Your shell must accept commands from the user. The first step to implement this will be reading a line of input. This section will focus on what to do with the line of input after it is read. A command will consist of the name or path to the command, followed by zero or more arguments separated by white spaces. For this assignment, we will define white space as one or more space characters. Here is an example of a command with arguments:

l s  - a l

In this argument _ls_ will be the command and _-al_ is the first and only argument. To allow proper formatting the commands, we will put these commands into an array of char*. So, the first element of the array should be _ls_, and the second element should be _-al_. To parse the commands, we suggest using the strtok function from string.h. You can use just a space (" ") as the lone delimiter. Remember to consider the case where the user does not enter any command and hits the enter key. Your shell should simply print the prompt again on a new line.


Related Discussions:- Accept commands from the user

Explain the different fields of an instructions, Explain the significance o...

Explain the significance of different fields of an instruction An instruction is a command given to a computer to perform a particular operation on some given data and the form

Define abap/4 layer, Define ABAP/4 layer? The ABAP/4 layer defines the ...

Define ABAP/4 layer? The ABAP/4 layer defines the data formats used by the ABAP/4 processor.

Constants - first-order logic, Constants - first-order logic: Constant...

Constants - first-order logic: Constants are things that is cannot be changed, like as england, black and barbara. So then they stand for one thing only, so that can be confu

Unification algorithm - artificial intelligence, Unification Algorithm - Ar...

Unification Algorithm - Artificial intelligence: To merge two statements, we should get a substitution which forms the two sentences similar. Remember that we write V/T to sign

Write miss policy - cache memories, WRITE MISS POLICY:   Write allo...

WRITE MISS POLICY:   Write allocate   fetch on write   fetch entire block, then write word into block   allocate a new block on each writ   allocate block, but

Write a program which collects in data samples, Write a program which colle...

Write a program which collects in data samples from a port at 1 ms interval. The upper 4 bits collected data same as mastered and stored in an array in successive locations. ; R

What is critical section problem, What is critical section problem? A ...

What is critical section problem? A race condition at data item occurs when many processes simultaneously update its value data consistency, needs that only one process should

Contact-based keyboards, Contact-based keyboards employ switches directly. ...

Contact-based keyboards employ switches directly. Though they have a comparatively shorter life they are the most preferred type these days because of their lower cost.  Three such

What is stack pointer, Stack pointer is a particular purpose 16-bit registe...

Stack pointer is a particular purpose 16-bit register in the Microprocessor, which grasp the address of the top of the stack.

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