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

Write SOP& POS form of a combinational circuit, A combinational circuit has...

A combinational circuit has 3 inputs A, B, C and output F.  F is true for following input combinations A is False, B is True A is False, C is True A, B, C are

What are the server specific middle wares, What are the server specific mid...

What are the server specific middle wares? Server specific middle wares. Their role in e-commerce. Additional features needed by e-commerce server. Middleware is the term of

What is php, The PHP Hypertext Pre processor is a programming language that...

The PHP Hypertext Pre processor is a programming language that permits web developers to make dynamic content that interacts with databases. PHP is basically used for developing we

External communication interfaces, External interface is interface between ...

External interface is interface between I/O interface and peripheral devices. Interface can be characterised into 2 main categories: (a) parallel interface and (b) serial interface

Micro-programmed control, Q. MICRO-PROGRAMMED CONTROL? A substitute to ...

Q. MICRO-PROGRAMMED CONTROL? A substitute to a hardwired control unit is a micro-programmed control unit in which logic of the control unit is specified by a micro-program. A m

Software project planning, Software Project Planning In the previous da...

Software Project Planning In the previous days of computing software costs comprised a small % of overall computer based system cost. In order of magnitude error software cost

Define master construct in fortan, Q. Define Master Construct in FORTAN? ...

Q. Define Master Construct in FORTAN? The master directive has following general form:  #pragma omp master structured_block  It causes master thread to execute structu

Implementation of arithmetic circuits, Implementation of Arithmetic Circuit...

Implementation of Arithmetic Circuits for Arithmetic Micro-operation  An arithmetic circuit can be implemented by a number of full adder circuits or parallel adder circuits. F

Use of delay loops, A very useful application of assembly is to generate de...

A very useful application of assembly is to generate delay loops. These loops are used for waiting for some time before execution of subsequent instruction. However how to find

Explain the program invisible registers, What are program invisible registe...

What are program invisible registers? Global and local descriptor tables are found in memory system. In order to specify and access the address of these tables, program invisi

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