使用像sed和Perl这样功能强大的工具，以及神奇的正则表达式，您可以直接通过UNIX命令行轻松地完成复杂的文本处理任务。

Using powerful tools like sed and Perl, and the magic of regular expressions, you can easily do complex text processing tasks directly on the UNIX command line.

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本文允许将正则表达式的强大功能与grep工具结合使用来创建定制的LDAP搜索功能。

This article allows you to combine the power of regular expressions with the grep tool to create your own custom LDAP search capability.

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此外还有一个更强大的“搜索及替换”工具，可以匹配正则表达式并选择性地替换html代码。

There is also a more powerful 'search and replace' tool which enables one to enter regular expressions to match and optionally replace HTML.

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