What is the difference between internal and external command?


In MS-DOS the two ways that commands are executed are referred to as internal command and external command. The difference between the two terms is that an internal command is embedded into the command.com file, while an external command requires a separate file to be used. Internal commands can be used without a file or disk. Some common internal commands include copy, date, delete, and exit. Some common external commands include format, backup, find, more, recover, restore, and print.
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