过滤文件或字符串中的内容 [英] filter something from file or string

问题描述

我正在处理一个问题，我必须扫描一个短文并打印出其中的所有IP地址。


假设我有一个文本存储在名为''test''的文件中，我写了一个小的perl程序，它读取文本的所有行并打印出任何ip地址：


打开文件，测试或者死！$ ;;

I''m dealing with a problem in which I have to scan through a short text and print out all ip addresses within it.

assume I have a text stored in a file named ''test'', and I write a small perl program which read all lines of the text and print out any ip address:

open FILE, "test" or die $!;

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推荐答案

!;

!;

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在regexp上尝试使用/ g修饰符逐步搜索。你必须稍微调整你的代码，但它不应该太糟糕。

Try the /g modifier on your regexp to progressively search. You''ll have to fiddle with your code a bit, but it shouldn''t be too bad.

试试/ g你的regexp上的修饰符可以逐步搜索。你必须稍微调整你的代码，但它不应该太糟糕。

Try the /g modifier on your regexp to progressively search. You''ll have to fiddle with your code a bit, but it shouldn''t be too bad.

错误，怎么回事？ perl对我来说很新，虽然我说它就像php一样。有没有更好的方式来阅读整篇文章并拿起我们想要的东西？

err, how is it? perl is pretty new to me though I ppl say it''s just like php. is there any more optimal way to read thru the whole text and pick up what we want?

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