为什么我的管道失效？ [英] Why is my piping failing?

问题描述

我一直在搞乱.cmd脚本，想练习管道。我写了一个脚本来创建文件，另一个用Notepad ++编辑它们。制作脚本（称为create.cmd）如下：

I've been messing around with .cmd scripts, and wanted to practice piping. I wrote one script to make files, and another to edit them with Notepad++. The making script (called create.cmd) is as follows:

@echo off
copy nul %1 > nul
echo %1

编辑脚本（称为edit.cmd）如下：

And the edit script (called edit.cmd) is as follows:

@echo off
start notepad++.exe %1

现在，我想尝试创建一个文件，然后将其输出（因此回传线）以文件名的形式管道到编辑脚本。所以我写的是这样：

Now, I wanted to try and make a file, and then pipe its output (hence the echo line) in the form of the name of the file to the edit script. So what I wrote was this:

create foo.txt | edit

但是，这会失败 - 我得到一个打开的Notepad ++窗口，但我新创建的文件出现在那里。我在这里失踪或做错了什么？

However, this fails - I get an open Notepad++ window, but my newly-created file does not appear there. What am I missing or doing wrong here?

推荐答案

您不是从第二个批处理文件中读取管道。

You are not reading from the pipe in your second batch file.

对于只读取第一批输出的一行，文件名，应该足够了：

For reading just one line of output from the first batch, the filename, this should suffice:

@echo off
set /p file=
start notepad.exe %file%

在批处理文件中读取stdin流以读取多线输入。

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