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DIR

DIR The DIR command is used to display filenames on your screen. In addition to names, the file size and creation date and time is also displayed. Several forms of the DIR command are available for you to use. A comprehensive list of DIR command forms follows. DIR-Lists a directory of the disk located in the active (or logged) disk drive (disk A if the A> prompt is displayed, B if the B> prompt is displayed, and so on). DIR D:-Lists a directory of the specified disk D:. DIR/P or DIR D:/P- Pauses the directory listing when the screen is full. press any key to see the next screen load of filenames. Typing DIR |MORE achieves a similar result. DIR/W or DIR D:/W- Display a wide directory; omits file size , date, and time information. DIR filename.ext - Displays the specified filename; used to verify the presence of a file on the logged or specified disk. DIR filename.* or DIR filename.???-Displays a directory of all files having the same filename with different extensions....
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FORMAT

The FORMAT  command prepares a new disk for use by organizing the disk into magnetic tracks and sectors that are readable by DOS. when a disk is formatted, any files on that disk are usually lost. because of the plethora of disk types and capacities, new parameters were added to the FORMAT command in DOS  version 4.01. MS-DOS 5.00 introduction a safe FORMAT command and the ability to UNFORMAT unintentially formatted disks. These parameters and others are presented in the following paragraph and table. FORMAT Command Form:   There are a number of FORMAT command forms. These are described in the following list. CAUTION  BE aware that the FORMAT command erases all files from the disk being formatted.     Many computer users  have accidentally formatted the wrong disk. If you have programs or    document files  you wish to keep, do not format the disk! (DOS 5.00 lets you UNFORMAT     disk, but even with this ve...
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Filenames

It is important to understand DOS file naming conventions and their use. Here, filenames and some special filename "tools" called wild cards and literals are described. What is a File name?   Every program and data file is given a name to differentiate it from other programs and data files. A program is one or more computer instructions collected into a file. A data file is normally a collection of characters (or data) that make up a document, like a letter, or a database, like a collection of accounting transactions or customer records. Descriptive filenames are normally used. For example, if you create and save a letter to Mom, you might give it the filename MOM.LTR. A letter to Dad could be called DAD.LTR. A word processing program file might have the filename WP.COM. Examine these filenames a little closer. First, notice that each filename is meaningful. This is important if you want to know what is in a file by looking at its name. Obscure filenames are of little u...
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