dir 1 > a . txt 2 > &1 |式a . txt。

这将有助于重定向STDOUT和STDERR

I agree with Brian Rasmussen, the unxutils port is the easiest way to do this. In the Batch Files section of his Scripting Pages Rob van der Woude provides a wealth of information on the use MS-DOS and CMD commands. I thought he might have a native solution to your problem and after digging around there I found TEE.BAT, which appears to be just that, an MS-DOS batch language implementation of tee. It is a pretty complex-looking batch file and my inclination would still be to use the unxutils port.

另一种变化是分割管道，然后根据需要重新定向输出。

    @echo off
    for /f "tokens=1,* delims=:" %%P in ('findstr /n "^"') do (
      echo(%%Q
      echo(%%Q>&3
    )
    @exit/b %errorlevel%

将上述内容保存到.bat文件中。它还将文件流1上的文本输出分割到文件流3，您可以根据需要重定向。在下面的例子中，我将上面的脚本称为splitPipe.bat…

    dir | splitPipe.bat  1>con  2>&1  3>my_stdout.log

    splitPipe.bat 2>nul < somefile.txt

有一个Win32端口的Unix tee命令，就是这样做的。见http://unxutils.sourceforge.net/或http://getgnuwin32.sourceforge.net/

我也在寻找同样的解决方案，经过一些尝试，我成功地在命令提示符中实现了这一点。以下是我的解决方案:

@Echo off
for /f "Delims=" %%a IN (xyz.bat) do (
%%a > _ && type _ && type _ >> log.txt
)
@Echo on

它甚至还可以捕获任何PAUSE命令。

如果你的windows环境路径中有cygwin，你可以使用:

 dir > a.txt | tail -f a.txt