Inside Out

Cmd.exe vs . Command.com

Cmd.exe is the Windows command processor. Command .com—the 16-bit command processor from the MS-DOS days—is still supported in 32-bit Windows 7 editions but is unavailable on PCs running 64-bit Windows 7 editions . Unless you have a legacy application that requires it, you should use Cmd .exe. You can run external MS-DOS commands, batch programs, and other executables with either processor, but Cmd includes several internal commands and options not available in Command.com, which hasn't been significantly updated in many years. Cmd offers full support for long file and folder names; Command .com can display long names but accepts only MS-DOSstyle short equivalents as input.

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