'Server-01' -match 'Server-\d\d' 单词字符\w 字符类匹配任何单词字符 [a-zA-Z_0-9]。 要匹配任何非单词字符,请使用 \W。PowerShell 复制 # This expression returns true. # The pattern matches the first word character 'B'. 'Book' -match '\w' 通配符句点...
How-to: Regular ExpressionsUse -match , -notmatch or -replace to identify string patterns. More complex patterns can be matched by adding a regular expression.RegEx characters: ^ . [ ] - g G ? + * p P w W s S d D $Match exact characters anywhere in the original string:...
For detailed information and examples, seehttp://aka.ms/regex To test your regular expressions, seehttp://regexlib.com/RETester.aspx supported unicode categories For named character set blocks (e.g., Cyrillic), search for "supported named blocks" in the MSDN Library. regular expression operatio...
Here are some examples to illustrate:Copy "Don" –match "D.n" (True) "Dn" –match "D.n" (False) "Don" –match "D?n" (True) "Dn" –match "D?n" (True) In the first expression, the period stands in for exactly one character, so the match is True. In the second ...
PowerShell uses regular expressions two ways: in conditional statements using the-matchoperator and with theSelect-Stringcmdlet. The-matchoperator is limited to one regular expression at a time whileSelect-Stringcan search for multiple regular expressions and through multiple files at once.Select-...
Let’s look at some very simple examples of the above in PowerShell ISE and see how these apply. Keep in mind that when we use-matchin PowerShell that it checks for the existence of a match. It only takes one match for something to be true and we should consider that when we’re...
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有关详细信息,请参阅 about_Regular_Expressions 和about_Automatic_Variables。 替换运算符 替换为正则表达式 与-match 一样,-replace 运算符使用正则表达式查找指定的模式。 但与 -match 不同,它将匹配项替换为另一个指定值。 语法: 复制 -replace <regular-expression>, <substitute> 运算符使用正则表达式...
类型:Regular-Expression-Option 有关允许的值,请参阅 [§4.2.6.4][§4.2.6.4]。 如果参数是集合,则集合中的每个元素必须与模式匹配。 请考虑具有以下参数块的函数调用 Test,调用如下所示: PowerShell 复制 param ( [ValidatePattern('\^[A-Z][1-5][0-9]$')] [string] $Code, [ValidatePattern('\...
orcheck whether a string matches a given regular expression: PS > "Hello World" -match "H.*World" True Most comparison operators also adapt to the type of their input. Forexample, when you apply them to simple data such as a string, the-likeand-matchcomparison operators determine whether ...