China DOS Union

I can't use commands like HELP in pure DOS and DOS under WIN98. What's the matter?

Win98 does not come with the help command by default

Well, I entered pure DOS, but it still doesn't work. Is there anything not set?

Is pure DOS MS-DOS 7.1 or DOS 6.x?

I don't know, how to check? Using VER can only display "windows 98 ~~~" and doesn't display the DOS version.

Also, my system is Microsoft Windows 98 Second Edition 4.10.2222 A

What is an external command? An external command is some standardized software integrated in the DOS system (built-in). (Not software provided by third parties). If these software are not contained in your system, naturally they cannot be executed. (Which will cause errors like "bad command or file missing" and so on. In Win2000, it will appear "'XXXX' is not recognized as an internal or external command, operable program or batch file." "XXXX" refers to the command you want to execute but don't have. But there is the help command in the DOS environment of Win2000. Hehe...
Or if the command you want to execute is not in the current directory and not included in the current path, an error prompt may also appear.
Specifically, you can go to read books like DOS introduction or posts on the Internet.

Then how can I use these external commands???????

Enter the directory where the command is located and execute the command...

Then, may I ask, how can I use the help command? This is not in the command/ directory. Do I need to download some command package or something like that?

The `help` command???
You need to have this command (software) to do it...
In Windows 98, `help` is not a standard command, (that is to say, Windows 98 does not provide this software, and `help` is not an external command under DOS that comes with Windows 98).
In Windows 2000, it is available, but unfortunately it can't run in your system.

Where are the masters? Reply, tell me how to have complete DOS commands available

But under my Win98, the "tree" command doesn't work either. What should I do? The previous几位 all said some things, but none of them told how to have a solution. What are the ways to use these commands? Do I need to download some patches, plugins or something like that?

First, you need to find out if you have the relevant command. In which directory is it? If you have it, you can use it by pointing to the path. If not, just copy one.

Where can I download it? Does this site have it?
If not, please say where I can download it
Thank you