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

Differentiate between at and xt computer system, Differentiate between AT a...

Differentiate between AT and XT computer system? Ans    XT -> Extended and AT->Advanced Technology Some differences between PC and XT include the type of power supply initia

Object-oriented control architecture for ams manufacturing, Object-Oriented...

Object-Oriented Control Architecture For Ams Manufacturing Introduction     In recent past, the industrial sectors have started presenting additional inclination toward

Digital systems and microprocessors, Your logic function for this assignmen...

Your logic function for this assignment is to be derived from your own student number. The number 1224583 will be used as an example as to how you should derive your function and e

Describe the graphic accelerators, Q. Describe the Graphic Accelerators? ...

Q. Describe the Graphic Accelerators? A Graphic Accelerator is actually a chip as a matter of fact most significant chip in your video card. The Graphic Accelerator is essentia

State about the indirect addressing, Indirect addressing A memory locat...

Indirect addressing A memory location is given that holds another memory location. This second memory location holds the real data. This mechanism solves problems caused by rea

what is feram?, Ferroelectric RAM is a random-access memory same in constr...

Ferroelectric RAM is a random-access memory same in construction to DRAM but uses a ferroelectric layer rather of a dielectric layer to achieve non-volatility. FeRAM is one of a gr

How to change default drive in dos, Q. How to Change Default Drive in dos? ...

Q. How to Change Default Drive in dos? To modify a default drive type the new drive letter followed by colon (:) and then press Enter.  For example, if the default drive is A a

Explain about local area network, Q. Explain about Local Area Network? ...

Q. Explain about Local Area Network? Local Area Network (LAN):  It is privately owned communication systems that cover up a small area, say a complex of buildings or school. Le

How is an instruction represented, Q. How is an instruction represented? ...

Q. How is an instruction represented? Instruction is signified as a sequence of bits. A layout of an instruction is called as instruction format. Instruction formats are princi

Programs portable on unix, How do you make programs portable on Unix and Do...

How do you make programs portable on Unix and Does under such circumstances? Constructors are invoked themself when the object is created for a class. There may be any number o

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