Let us differentiate between internal and external commands

Let us differentiate between internal and external commands. Internal commands, such as DIR, reside in the command console. External commands, such as TREE, are not included in the command console. Can you come up with other examples?

Solution

Internal commands in DOS External commands in DOS The internal commands in DOS reside in command.com file. The external commands need the application file in addition to command.com file. examples: date,vol,type,cls,ver,copy etc examples xcopy,undelete,deltree ,chkdsk,label etc. These commands do not vary from one system to another. The external commands vary from one system to another These commands are built into the command interpreter for DOS. These commands are not included in the interpreter.