Regex: The regular expression.
regex：正则表达式。
Any regular expression can be used.
任何正则表达式都可以使用。
Enter the following regular expression.
输入下面的正则表达式。
Step 4: Evaluate the regular expression.
第4步：评估正则表达式。
Pattern is a regular expression compiler.
Pattern是一个正则表达式编译器。
The regular expression for this is \w* \w.
用于此目的的正则表达式是 \w* \w 。
Also, see how simple the regular expression is.
还有，看看正则表达式是多么的简单。
Specify the regular expression pattern for the rule.
为这个规则指定正则表达式模式。
Notice that you first ran a regular expression on it.
请注意，首先在其上运行了一个正则表达式。
Table 1 shows some basic regular expression sequences.
表1显示了一些基本正则表达式序列。
The syntax used is plain old regular expression syntax.
所使用的语法是普通而古老的正则表达式语法。
Table 1 shows some common regular expression operators.
表1显示了一些常用的正则表达式操作符。
You use the -e option to specify the regular expression.
可以使用- e选项来指定正则表达式。
The regular expression argument is the routing mechanism.
正则表达式参数是路由机制。
A regular expression extracts information through capture.
正则表达式通过捕获来提取信息。
Figure 2 shows Regulator with a simple regular expression.
Figure2显示了带有简单正则表达式的Regulator。
A regular expression can also include repetition modifiers.
正则表达式还可以包括重复修饰符。
Match (see Listing 4) represents a single regular expression.
Match （请参阅清单4）表示一个正则表达式。
You can also use regular expression-like groups to match files.
您还可以使用类似于正则表达式的组来匹配文件。
In a nutshell, a regular expression describes a string pattern.
简而言之，正则表达式描述字符串模式。
Another program that USES regular expression extensively is awk.
使用正则表达式的另一个程序是awk。
The regular expression itself is compiled into a Pattern object.
将正则表达式本身编译到Pattern对象中。
The schema parser must have support for regular expression facets.
模式解析器必须支持正则表达式。
Note that this is not regular expression matching as used by grep.
注意：这不是grep使用的正则表达式匹配。
Source: the input string the regular expression is matched against.
source：正则表达式所匹配的输入字符串。
One of the unique features of it is its regular expression debugger.
它的一个独特的特性是常规表达式调试器。
The logical test can also test against a Perl-like regular expression.
逻辑测试还可以针对类似 Perl 的正则表达式进行测试。
You can write this pattern as a regular expression in the following way.
您可以按下列方式将该模式写为一个正则表达式。
You run a regular expression against it to extract the user agent string.
您针对这个对象运行一个正则表达式，提取用户代理字符串。
If the line matches the regular expression, then you print out that line.
如果该行与正则表达式匹配，则打印该行。
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