WILDCARD'S CHARACTERS

Windcard Character:-

            Wildcard character(wildcard) is a keyboard character that can be used to represent one or many characters.Usually operating system use it as a means of specifying more than one file by name.In MS-DOS and Windows the questions mark(?) wildcard character can be used to represent any single character  and asterisk(*) can be used to represented any number of characters.

For example:-

OOL.TXT

It would refer to COOL .TXT,FOOL.TXT and so on

*.TXT

It would refer to any filename ending in the extension.TXT

*.*

It would refer to any filename and any extension I.E. all files on the specified disk or in a specified directory

In MS-DOS wildcards are used in command –line and in windows wildcards are mostly used to find files.Wildcards give flexibility to the user to work with the files.

Disk Drive:

            The data is stored generally in the disk.The device that is used to read data from the disk and write data to the disk is known as disk drive.

Drive:-

            An area of storage that is formatted with a file system and has a drive letter in known as drive.The storage can be a floppy  disk ,a           CD ,a hard disk or another type of disk.The drive letter is designed from A to Z A and B are reserved for floppy disk .Colon(:) is used after drive letter to specify it.

Default Drive:-

            Default is described as value that computer uses if user does not specify and alternate value.Default drive,in operating system is drive that is selected automatically for reading writing data if user does not specify and alternative drive is known as default drive.

Volume Label:-

            Volume label is a name for a disk or tape usually assigned by the user when the disks tape is formatted.The name can consist of letters,numbers,centain sysmbols or a combination of these.Volume labels enable an operating system to identify a particular disk ,by using unique name .In MS-DOS volume label in limited upto 11 characters.