Delete command, Computer Engineering

Assignment Help:

When the user is inputting commands into your shell, it should properly handle delete and backspace. When one of these characters is detected, you will need to remove one character from the screen. For this, you can simply print a "\b" character to the screen. This will act as the backspace. Remember also to remove the character from the buffer you are using to store the

input. Here are the byte values for the delete and backspace characters:

delete  --> 127

backspace  --> 8

When the user presses delete or backspace, it should remove a character from the screen. But, it should not remove any of the prompts. For example, if the console looks like the following after the user typed the character "a",

/home/ p r o j e c t s / cs200 / spring12 / s h e l l >a

then if the user presses the backspace twice, the console should still look like:

/home/ p r o j e c t s / cs200 / spring12 / s h e l l >

Notice that the prompt is still intact.


Related Discussions:- Delete command

Explain simple telephone communication system, Explain simple telephone com...

Explain simple telephone communication system with circuit and equation of current flow in microphone? Simple Telephone Communication: In the simplest type of a telephone cir

Explain approaches to identify free memory area in a heap, Discuss two main...

Discuss two main approaches to identify free memory area in a heap. Two popular systems to identify free memory areas as a result of allocation and de-allocations in a heap are

How do you track down a transition by name, Question 1: a) How do you ...

Question 1: a) How do you track down a transition by name? b) Why Premiere Pro is considered a non-linear editor? c) Explain clearly the main problem that may arise wh

Illustrate the examples of simulations, Illustrate the Examples of simulati...

Illustrate the Examples of simulations -  Training (for example pilots, drivers, etc.) -  Running/testing nuclear plants and chemical plants -  trying out equipment to be

Draw a diagram to explain major components of web browser, Draw a neat diag...

Draw a neat diagram to explain major components of a web browser. The Major Component of a Web browser A browser contains a set of clients, a controller and a set o

What are benefits and advantages of linq, Benefits and benefits of LINQ are...

Benefits and benefits of LINQ are: 1. Makes it simpler to transform data into objects. 2. A common syntax for all data. 3. Strongly typed code. 4. Provider integration.

Minimum and maximum algorithm, For this assignment, you will need to create...

For this assignment, you will need to create an ARM assembly language code routine that implements an algorithm to search through an array and find BOTH the minimum and maximum val

Distinguish between an agent system and an expert system, Problem : (a)...

Problem : (a) The concept of an agent is generally defined by listing the properties that agents exhibit. Identify and describe the properties that you would associate with th

Show the decimal representation in computers, Binary number system is most ...

Binary number system is most common for computer due to two stable states of its components. However unfortunately this isn't a very natural system for us as we deal with decimal n

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