How do I get the result of a command in a variable in windows?

Question

I'm looking to get the result of a command as a variable in a Windows batch script (see how to get the result of a command in bash for the bash scripting equivalent). A solution that will work in a .bat file is preferred, but other common windows scripting solutions are also welcome.

Accepted Answer

If you have to capture all the command output you can use a batch like this:

```
@ECHO OFF
IF NOT "%1"=="" GOTO ADDV
SET VAR=
FOR /F %%I IN ('DIR *.TXT /B /O:D') DO CALL %0 %%I
SET VAR
GOTO END

:ADDV
SET VAR=%VAR%!%1

:END
```

All output lines are stored in VAR separated with "!".

But if only a single-line console-output is expected, try:

```
@ECHO off
@SET MY_VAR=
FOR /F %%I IN ('npm prefix') DO @SET "MY_VAR=%%I"

@REM Do something with MY_VAR variable...
```

@John: is there any practical use for this? I think you should watch PowerShell or any other programming language capable to perform scripting tasks easily (Python, Perl, PHP, Ruby)

How do I get the result of a command in a variable in windows?

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