Explain about wildcard character in dos, Computer Engineering

Assignment Help:

Q. Explain about wildcard character in DOS?

Sometimes you may like to list files having similar names. Let as suppose that these files are present in a root directory of drive C. now if you use the command - DIR C: CHAPTER.*, it will list all files from drive C that have the name UNIT. In the same way, to list all '.DOC' files from the default drive, you can use the command - DIR *.DOC. the character '*' used in these commands is known as the wildcard character. This character selects any name (where * is used) in the command. In the 1st DIR command (DIR C: UNIT.*) it will choose any extension name. in the 2nd  command (DIR *.DOC), '*' choose any file name having  .DOC extension name. the '*' wildcard character can also be used in another way. Assume the command - DIR WCHAP*. This command list all file names that start with WCHAP from the current drive. For example, it will list filenames, such as WUNIT1, UNIT 10.DOC, WUNIT­_A.RAP, etc.

            You can also use a different wildcard character - '?'.

C:\> DIR sale?rep

This command will list filenames such as SALE1REP, SALESREP, SALE_REP.rap, etc. that is, it will accept any character at the position of '?' in the DIR command.


Related Discussions:- Explain about wildcard character in dos

What is a demultiplexer, What is a Demultiplexer ? Ans. Demultiplex...

What is a Demultiplexer ? Ans. Demultiplexer has similar circuit as decoder but here E is obtained as the particular input line, the output lines are similar as decode

Compact disk read only memory, Q. What is Compact Disk Read Only Memory? ...

Q. What is Compact Disk Read Only Memory? This technology has evolved out of entertainment electronics market where cassette tapes and long playing records are being replaced b

Units of artificial neural networks, Units of artificial neural networks: ...

Units of artificial neural networks: However the input units simply output the value that was input to them from the example to be propagated. So every other unit in a network

Translate sentence into predicate logic - ai, Translate the following sente...

Translate the following sentences into predicate logic, using identity (=). a. Everyone was drunk except John. b. Christine rides a bike, but everyone else drives a car. c

Autonomous rational an agents, Autonomous Rational an Agents: In many ...

Autonomous Rational an Agents: In many cases, it is inaccurate to talk about a single program or a single robot, as the multi-purpose and multi-tasking system of hardware and

Explain user datagram protocol, Explain User Datagram Protocol. UDP(Use...

Explain User Datagram Protocol. UDP(User Datagram Protocol) : User Datagram Protocol uses a connectionless communication paradigm. It is an application using UDP does not re

Explain the different sub-functions of process scheduling, Explain the diff...

Explain the different sub-functions of Process Scheduling. Process scheduling contains the subsequent sub-functions: 1. Scheduling: Chooses the process to be executed next

Determine the term- security, Determine the term- Security When using ...

Determine the term- Security When using Internet, security can be enhanced using encryption. Debit and credit card transactions can also be protected by a specific type of pas

What are the blocks of microprocessor based system, What are the blocks of ...

What are the blocks of microprocessor based system 1.  The Memory and I/O System 2.  The DOS Operating System 3.  The Microprocessor

Explain the instruction decode, Q. Explain the Instruction Decode? Ins...

Q. Explain the Instruction Decode? Instruction Decode: This phase is performed under control of Control Unit of computer. The Control Unit determines the operation which is t

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