命令提示符中的代码不适用于批处理文件 [英] Code in Command prompt doesn't work in batch file

问题描述

当我在命令提示符下执行它时，下面的代码实现了我想要的，但是当我将其放入.bat文件并尝试执行它时，却没有做到:

The code below does what I want when I execute it in the command prompt but not when I put it in a .bat file and try to execute it:

for /f %a in ('dir /b *.csv') do for /f "tokens=*" %b in (%a) do echo %b,%a >> all.csv

我想念的是什么.也有一种方法可以使其完全执行操作，而无需在命令提示符窗口中显示循环中的每个步骤.打扰一下，我是新手！

What am I missing. Also is there a way to have it do exactly what it does without displaying every step in the loop in the command prompt window. Excuse me I am a newbie!

推荐答案

在批处理文件中-与命令提示符相反- for 变量需要两个 %%符号，例如 %% a .

In batch files - as opposed to at the command prompt - for variables require two %% signs, e.g. %%a.

要在执行命令时关闭命令的回显，请将以下行放在批处理文件的顶部: @echo off

To turn off echoing of commands as they're being executed, place the following line at the top your batch file: @echo off

请注意，在 @ 之前加前缀是抑制命令回显的一种特殊方法.在这种情况下，它用于防止 echo off 本身被回显.

Note that prepending @ is an ad-hoc way of suppressing command echoing; in this case it is used to prevent echo off itself from being echoed.

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