An internal command is an MS-DOS command that is stored in the system memory and loaded from the command.com or cmd.exe. The illustration shows how commands contained within command.com are part of the command.com file. However, with the external commands, each of the commands are their own separate file.
Listing of internal commands
Below are examples of internal commands in MS-DOS and the Windows command line currently listed in the Computer Hope database.
Where are the internal command files stored?
All of the internal commands are part of the shell which could be command.com or cmd.exe (depending on your version of MS-DOS or Windows) and are not separate files on the hard drive.
How do you run an external command?
As long as you can open a command line you can run any of the Internal commands included with your version of MS-DOS or Microsoft Windows.