如何在Perl中区分两个文件？ [英] How can I diff two files in Perl?

问题描述

我有两个需要具有相同值的文本文件。

I have two text files which need to have the same values.

$ diff A.txt B.txt
4a5
> I have this extra line.
$

在Perl中打开文件

open (ONE, "<A.txt");
open (TWO, "<B.txt");

如何在Perl中进行这种比较？ Perl是否具有内置的差异，还是我需要使用unix diff 实用程序？我不想为此实现自己的差异算法。

How can I do such a diff from within Perl? Does Perl have a inbuilt diff or do I need to use the unix diff utility? I don't want to implement my own diff algorithm for this.

我确实需要有关文件不同之处的信息，但不需要使用UNIX diff 实用工具。只是一个例子。

I do need the information as to where my files differ, but I do not need to use the unix diff utility necessarily. That was just an example.

推荐答案

您可以尝试使用 Text :: Diff

或者，UNIX实用程序是一种选择。

Alternatively, the UNIX utility could be an option.

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