Q

What is the difference between internal and external commands?

What is the difference between internal and external commands? The terms "internal and external" commands bring

the Dos operating system in mind!

While the terms are still used these days, I'll refer to the Dos O/S example to help you understand the concept and their difference.

The Dos operating system requires a few critical files in order to work correctly, one of these is the 'command.com' file, which is a basic part of the operating system.

Command.com has built in commands, the so called "internal" commands and a few of them are "dir", "type", "vol", "date", etc. These commands are 'programmed' into the command.com file and do not require other files in order to work. On the other hand, we have commands such as "deltree", "undelete", "xcopy", etc. that are external commands, meaning that they require the actual application/file in order to use them, along with command.com.

This was first published in February 2004

Dig deeper on LANs (Local Area Networks)

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

SearchSDN

SearchEnterpriseWAN

SearchUnifiedCommunications

SearchMobileComputing

SearchDataCenter

SearchITChannel

Close