从CMD文件中获得的字符串并将其设置为一个变量CD使用 [英] CMD get string from file and SET it as a variable to use in cd

问题描述

我是新来的批处理文件，我试着写一做我的工作的一部分（我知道偷懒右）
到目前为止，我有以下...

I'm new to batch files and I'm trying to write one to do part of my work (i know lazy right) So far I have the following...

SET skip=1

REM for all the directories indicated to contain core repositories
FOR /F "skip=%skip% delims=" %%i IN (C:\Repos.txt) DO ( 
SET TgtDir =%%i
echo %TgtDir% >> C:\result.txt
)

Repos.txt的内容是：

60000

C：\\ somedir \\ someotherdir \\

C：\\ A \\ B \\ C \\

基本上我想这个剧本要经过一个文件，忽略这将用于以后的延迟设置的第一行，并提取每行则（理想情况下）把它传递给一个cd命令，但现在我只是想把它存入变量TgtDir。

Basically I want this script to go through a file, ignoring the first line which will be used for a delay setting later, and extract each line then (ideally) pass it to a cd command but for now I'm just trying to get it into the variable TgtDir.

当我运行此脚本在C输出：\\的Result.txt是：

ECHO处于开启状态。

ECHO处于开启状态。

When i run this script the output in C:\result.txt is:
ECHO is on.
ECHO is on.

任何帮助吗？

推荐答案

您会想看看 EnableDelayedExpansion 选项​​批处理文件。从以上链接：

You'll want to look at the EnableDelayedExpansion option for batch files. From the aforementioned link:

延迟的变量扩充与for循环工作时是非常有用。通常情况下，环整个被评为即使它跨越了一个批处理脚本的多行一个命令。

Delayed variable expansion is often useful when working with FOR Loops. Normally, an entire FOR loop is evaluated as a single command even if it spans multiple lines of a batch script.

所以，你的脚本最终将看起来像这样：

So your script would end up looking like this:

@echo off
setlocal enabledelayedexpansion
SET skip=1

REM for all the directories indicated to contain core repositories
FOR /F "skip=%skip% delims=" %%i IN (C:\Repos.txt) DO (
    SET TgtDir=%%i
    echo !TgtDir! >> C:\result.txt
)

作为替代方案，只需要使用 %%我变量在你的内循环，而不是创建一个新的变量。

As an alternative, just use the %%i variable in your inner loop, rather than creating a new variable.

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