如何使批处理文件将字符串作为命令运行？

Question

I want to make a batch file to circumvent some cmd problems on my computer, but for that I need to be able to take String user input and run it as a command.

Basically what I want to be able to do is type in a command when the batch file asks for input, and have the computer run that command, similar to python's os module (class?)

Answer 1

Simply assign the string to a variable, then "execute" the variable as though it was a program

eg

set  myvar=ECHO Hello, World!
%myvar%

Answer 2

Use the set /p command to prompt for input. This command also displays a message. Example:

@echo off
set "command=dir"
set /p "command=type in a command: "
echo.command is: %command%
echo.press any key or ^<CTRL+C^> to abort . . .
>nul pause
%command%

Answer 3

At its simplest, you want to use set /p to prompt for the command, setting an environment variable to the result, then simply expand the environment variable by itself and the OS will attempt to execute it as a command.

SET /P COMMAND=Command:
%COMMAND%

Answer 4

You can use the batch for loop, this works for me in the command prompt, but not the power shell:

Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Users\Administrator>FOR /F "delims=" %i IN ('python -c "print('set wow=yep')"') DO set toexec=%i

C:\Users\Administrator>set toexec=set wow=yep

C:\Users\Administrator>%toexec%

C:\Users\Administrator>echo %wow%
yep