对于初学者的一个最好的建议就是：首先学习最基本的正则表达式(参阅资料部分，或“perldocperlre ”参考手册)，稍后才进一步学习那些复杂的高级特性。
The best advice for the beginner is: learn the basics of regular expressions (see Resources or the "perldoc perlre" manual page), but stay away from the advanced features for a little while.
但是该编辑器在许多方面都是保持基本的功能，例如，在搜索对话框中甚至不使用正则表达式。
But the editor remains basic in many ways -- not even using regular expressions in the search dialog, for example.
但是您现在已了解了正则表达式的基本知识。
正则表达式基本上就是为进行文本处理而构建的一种小型的子语言，用来进行字符串的匹配和替换。
Regular expressions are basically a small sub-language built for text processing, used to match and replace strings of characters.
在本文中，我们将介绍如何构建平面文件数据库，如何创建正则表达式，以及如何进行基本的搜索和显示。
In this article, we will cover building the flat-file database, regular-expression creation, and basic search and display.
清单12显示了与grep命令一起使用的一些基本正则表达式。
Listing 12 shows some of the basic regular expressions used with the grep command.
让我们忽略较复杂的选项，只关注正则表达式的基本语法。
Let's ignore the more complex options and just look at the basic syntax of a regular expression. Here are some examples.
正则表达式所采用的一些基本规则如下。
回溯既是正则表达式匹配功能基本的组成部分，又是正则表达式影响效率的常见原因。
Backtracking is both a fundamental component of regex matching and a frequent source of regex inefficiency.
对基本的编程概念的理解，有助于自动化测试脚本的编写，例如设置变量、使用正则表达式、创建循环、读取数据头等等。
A basic understanding of programming concepts is helpful for tasks such as setting variables, using regular expressions, creating loops and extracting header data.
让我们看看正则表达式的基本情况，来说明虽然正则表达式常被视为是“高级主题”，有时候它们也是非常简单的。
Let us look at the most basic of regular expressions now to show you that although res are sometimes considered an "advanced topic," they can also be rather simplistic.
让我们看看正则表达式的基本情况，来说明虽然正则表达式常被视为是“高级主题”，有时候它们也是非常简单的。
Let us look at the most basic of regular expressions now to show you that although res are sometimes considered an "advanced topic," they can also be rather simplistic.
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