China DOS Union

How to set a password input in batch processing?
I want to load a line in the autoexec.bat of the system to prompt for a password. If the password I enter is correct, it will continue to execute. If it is incorrect, it will continue to prompt for the password 3 times. (It can also jump to other batch processing to execute if the password input is incorrect.)
I heard that it can be written with SET?
Hope the expert can answer

You did not specify the running environment of the batch processing. If it is the cmd environment, you can input using set /p:

@echo off
set num=0
:loop
set /p pass=Please input password:
if "%pass%"=="MyPass" goto next
set /a num=%num% + 1
if %num%==3 goto error
goto loop

:error
other.cmd

:next
...

Tested on xp.

I want something that can run under pure DOS

In pure DOS, the only things I know are using third-party tools, such as WBAT or XSET, GET and such tools.

Regarding dengt:

There are also codes that don't use third - party tools, but they are relatively complicated. If you are interested, you can refer to ; if it is allowed to display the password in plain text, then the problem degenerates into obtaining the password string from the input end and then comparing it, and the code can be simpler.

Password program (batch) with custom password
http://www.cn-dos.net/forum/viewthread.php?tid=8804

Thanks for helping me solve the same problem