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If no match is found, an error message is printed and the command prompt is refreshed. When the user types a line of text at the operating system command prompt, COMMAND.COM will parse the line, and attempt to match a command name to a built-in command or to the name of an executable program file or batch file on disk. Some commands are internal and built-into COMMAND.COM, others are stored on disk in the same way as application programs. The command interpreter is usually stored in a file called "COMMAND.COM". When an application exits, if the command interpreter in memory was overwritten, MS-DOS will re-load it from disk. The command interpreter for MS-DOS runs when no application programs are running.
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Some DOS commands carry out functions equivalent to those in a UNIX system but always with differences in details of the function.
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In the current Microsoft Windows operating system a text-mode command prompt window can still be used. Over the several generations of MS-DOS, commands were added for the additional functions of the operating system. Some commands were built-in to the command interpreter, others existed as transient commands loaded into memory when required.
ROBOTC COMMANDS LIST PC
In the personal computer operating systems MS-DOS and PC DOS, a number of standard system commands were provided for common tasks such as listing files on a disk or moving files.