如何比较批处理文件中的两个文件？ [英] How can I compare two files in a batch file?

问题描述

如何比较批处理文件中的两个文件，并根据它们是否匹配执行操作？我试过像：

How can I compare two files in a batch file, and perform an action based on whether or not they match? I've tried something like:

if file1.txt NEQ file2.txt goto label

但它比较的是实际的字符串file1.txt，而不是文件。我已经阅读过COMP命令，但它似乎不工作，如果我把它放在一个if语句。有人知道如何这样做吗？对不起，我很少使用批处理文件，并且很少有经验。

but it compares the actual string "file1.txt" rather than the file. I've read about the COMP command, but it doesn't seem to work if I put it in an if statement. Does anybody know how to do this? Sorry, but I rarely use batch files and have little experience in them.

提前感谢。

推荐答案

我相信你可以使用FC命令，然后检查错误级别。这里有一些代码：

I believe you can use the "FC" command and then check the errorlevel. Here's some code:

@echo off
:main
fc c:\filename r:\filemame > nul
if errorlevel 1 goto error

:next
echo insert next CD
pause
goto main

:error
echo failed check

（从 http://www.computing.net/answers/dos/batch-file-command/15753.html ）

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