To make my answer complete, the following is a list of MS-DOS internal and external commands. Wikipedia has a page for the list of DOS commands, and it says: Like the other internal commands, it is built into the file named. This change only affects that DOS window.ĭir is an internal MS-DOS command. If you're going to be needing some utility from a directory, but will have to be traversing to other directories, you can add the folder of the utility to the PATH by using SET PATH=%PATH% DriveLetter:\Utility\Path\Here\. To see what directories are in your path, use SET PATH. External commands from other directories can also be called, as long as the directory they're in are in your PATH environment variable. ![]() (in a newly started DOS shell on Windows 7, this would usually be C:\Users\YourUsername\). ![]() External commands can be called from the directory that you're working from. ![]() However, external commands are not limited to these locations. These commonly reside in C:\Windows\ C:\Windows\System\ C:\Windows\System32 and (if you have 64-bit windows) C:\Windows\SysWOW64\ This is simply a subroutine of the DOS interpreter that you're calling. Dir is an internal command, like cd, copy, and call.
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