China DOS Union

How can I convert DOS internal commands into external commands? For example, turn REN into a separate file form?

It is estimated that some experts can complete it through disassembling. Or use doskey to "escape" the original internal command, heh heh

Why is this necessary???

Well~ For example, the expert electronixtar: P

When debugging games, sometimes you need to rename files. But Internet cafes prohibit changing file extensions, so I thought of REN. Who knew he had tampered with it, and all DOS commands didn't exist at all?

Dizzy
Nowadays, the "Internet cafe - specific system" is not using DOSKEY to disable DOS
It seems that all DOS commands have been deleted

It seems that the Chinese text "ren好办啊" is not a standard translatable content in the traditional sense here. The code part is in English already. So the overall output would be:

ren好办啊
#include <stdio.h> int main(int argc, char* argv) { rename(argv,argv); }

Brother upstairs, may I ask how to use your code? I'm a newbie

Find a C language compiler for the Win32 platform to compile into an exe file, and it can be executed. Unfortunately, I don't have one at hand.

A great person has appeared

Modify COMMAND.COM (for MS-DOS versions 6.22 and earlier) using PCTOOLS.
Find "DIR" and change it to "DDD" (here, "finding DIR" means finding the character "DIR" within the COMMAND.COM file).
As for where this character is located, you need to find it slowly using PCTOOLS (PCT).

Then, after modification, replace your current COMMAND.COM file.
(Rebooting, booting with a boot disk and then overwriting the command.com on the C system or directly overwriting the command.com on the boot disk is safe.)
Then typing "DIR" will be invalid, and typing "DDD" will have the original function of "DIR".
(I've done this before and it was successful. : ) The owner can just go ahead and modify it. : )

If the owner is proficient in Debug and assembly, then use Debug to modify it. : )

[ Last edited by redtek on 2006-11-9 at 01:35 AM ]

As Brother redtek said, you can also modify it with UltraEdit~

Good idea～:)
Suggest letting the楼主 of chpavc modify for fun～:)