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Each MS-DOS command is either internal or external. Internal commands
are commands that are built into MS-DOS and can be used at any time
once MS-DOS is loaded into memory External commands are stored on
your system diskettes as program files. To run an external command,
MS-DOS must be able to locate the file from your system diskette or from a
directory on the hard disk. This may require you to use the command’s
path name when you enter the command.
See your MS-DOS manual for more information on the command format.
Also see your MS-DOS manual for command descriptions that tell you
which parameters and delimiters are required for each command and which
optional parameters and switches you can use.
Entering MS-DOS Commands
You can enter an MS-DOS command whenever you see the MS-DOS
command prompt. Type the command name and any necessary parameters
and delimiters and then press
Enter
to execute the command. You can type
command names and parameters in either uppercase or lowercase letters.
If you make a mistake when typing a command and you notice it before you
press
Enter,
you can do one of two things:
l
Use the backspace key to back up and correct the error
l
Press ESC and then Enter to cancel the command line.
If you press Enter when a command line has an error in it, the screen
displays an error message. Usually, the command prompt reappears so you
can try again. Type the correct command and press Enter.
Storing Data
All your work and programs are stored in files on your diskettes or hard
disk. A data file contains information, such as words, numbers, or pictures.
A program file contains instructions that the computer can understand and
execute.
The kind of file you create depends on the MS-DOS command or
application program you use to create it. In general, a data file that you
Using MS-DOS with Your Equity Ie 4-3