There are two types of DOS Command. Internal Commands : In DOS systems, an internal command is any command that resides in the COMMAND.COM file. This includes the most common DOS commands, such as COPY and DIR. These are for performing basic operations on files and directories and they do not need any external file support. Internal commands are more commonly used and important to the operation and use of the Windows operating system. By embedding them in the command.com file, they can be quickly accessed and always available in MS-DOS and to Windows when needed. External Commands : External commands are for performing advanced tasks and they do need some external file support as they are not stored in COMMAND.COM Commands that reside in other COM files, or in EXE or BAT files, are called external commands. External commands are powerful commands and can help fix problems, improve performance, or perform other actions. External commands usually have higher resource re...
