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

Different types of addressing modes, Described different types of addressin...

Described different types of addressing modes available? Ans: The various types of addressing modes available are following:   Register addressing mode   Immediate ad

Critical path analysis, Given the information provided in Table 1: ...

Given the information provided in Table 1: Prepare an Activity on the Node (AON) Network Diagram ( I recommend you  use MS Project or any drawing tool); Prepare

In how many ways the data can be passed to functions, Object Oriented Progr...

Object Oriented Programming 1. Describe that in how many ways the Data can be passed to functions? Explain with the help of one example. 2. Describe how you create class a

Decomposition model of parallel programming, The PVM system supports functi...

The PVM system supports functional and data decomposition model of parallel programming. It attaches with C, C++, and FORTRAN. The C and C++ language bindings for the PVM user inte

OR, importance of duality concep? Article Source: http://EzineArticles.co...

importance of duality concep? Article Source: http://EzineArticles.com/4133733

Equivalences & rewrite rules - artificial intelligence, Equivalences & Rewr...

Equivalences & Rewrite Rules - artificial intelligence: Along with allowing us to verify trivial theorems, tautologies make us able to establish that definite sentences are say

When should the method invokelater() be used, This method is used to make s...

This method is used to make sure that Swing components are updated by the event-dispatching thread.

Summary of tasks, Summary of Tasks Task Summary attempts to show amoun...

Summary of Tasks Task Summary attempts to show amount of duration every task has spent starting from beginning of task until its completion on any processor as displayed in Fi

What are the steps to design algorithm, What are the steps to design algori...

What are the steps to design algorithm? Formulate algorithm for each operation. Analysis specification tells what the operation does. The algorithm shows how it is done. The st

Ms access database to a present conversion, I have converted my MS Access d...

I have converted my MS Access database to a present conversion. I am getting conversion errors? Ans) Design specs have changed in new releases of MS Access. Visit the on-line

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