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 how presentation layer helps in establishing, Explain how presentat...

Explain how presentation layer helps in establishing and processing data in End to End layers. The idea of the presentation layer is to stand for information to the communicati

What is shared memory programming, Q. What is Shared Memory Programming? ...

Q. What is Shared Memory Programming? We know all processors share a common memory in shared memory model. Every processor can be assigned a separate portion of program stored

Explain the term- software, Explain the term- Software Some of the key ...

Explain the term- Software Some of the key aspects of software are considered in this section. Familiarisation with software packages is generally best achieved by carrying out

State and prove any one of the demorgen''s laws, Q. F(x,y,z) = ∑m (4,6,7,8...

Q. F(x,y,z) = ∑m (4,6,7,8)+ ∑d (2,5,11,12) Using K-Map. Q. State and prove any one of the DeMorgen's Laws. Show that these theorems can be extended up to any number of variabl

What are the various layers of a file system, What are the various layers o...

What are the various layers of a file system? The file system is composed of lots of dissimilar levels. Each level in the design uses the characteristic of the lower levels to

Operating system., what is the minimum number of page faults for an optimal...

what is the minimum number of page faults for an optimal page replacement strategy?

Determine the octal equivalent of decimal number, The octal equivalent of (...

The octal equivalent of (247) 10 is ? Ans. (247) 10 = (367) 8

Design a sequential circuit with two flip-flop and one input, Design a coun...

Design a counter modulo 4 (sequential circuit with two flip-flops and one input U) which work like that: 1. When U=0, the state of the flip-flop does not change. 2. Whe

Weighted harmonic mean and geometric mean, Problem Show which of the w...

Problem Show which of the weighted arithmetic mean, geometric mean or harmonic mean, you would use in each of the following case. Justify your answer in each case. (a)

Define the operand data types, Operand is that part of an instruction which...

Operand is that part of an instruction which specifies the address of source or result or the data itself on which the processor is to operate. Operand types typically give operand

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