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

State the difference between following, Q. State the difference between fo...

Q. State the difference between following. i. RAM and ROM ii. SRAM and DRAM iii. Dynamic and static MOS memories

Representations or languages - artificial intelligence, Representations/Lan...

Representations/Languages Used: Many people are taught "AI" with the opening line: "The three most important things in "AI" are  representation, representation and representat

Control of program, Example:                         CMP    AX,BX    ;...

Example:                         CMP    AX,BX    ; compare instruction: sets flags JE        THERE    ; if equal then skip the ADD instruction  ADD  AX, 02    ; add 02

Udp, udp connection establishment and termintion

udp connection establishment and termintion

First order predicate logic-artificial intelligence, First Order Predicate ...

First Order Predicate Logic This is a more expressive logic because it builds on propositional logic by allowing us to use constants, predicates, variables, quantifiers and fun

Queue, write a program insert and remove value in queue.

write a program insert and remove value in queue.

Give examples of different parameter-passing mechanisms, Explain different ...

Explain different parameter passing mechanisms to a function with the help of example? The different parameter-passing mechanisms are given below: 1.   Call by value 2.

Programming languages array operations, Q. Programming languages array oper...

Q. Programming languages array operations? In programming languages array operations are written in compact form which frequently makes programs more understandable. Conside

Find out data changing from special code to temporal code, Data can be chan...

Data can be changed from special code to temporal code by using ? Ans. By using Shift Registers data can be changed from special code to temporal code. A Register wherein data ge

Write an algorithm to outline the macro-expansion, Write an algorithm to ou...

Write an algorithm to outline the macro-expansion using macro-expansion counter. The flow of control throughout macro expansion can be implemented by using a MEC that is macro-

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