-split 運算符 具有-regex 選項的 switch 語句根據預設,PowerShell 正則表示式不區分大小寫。 上述每個方法都有不同的方法來強制區分大小寫。針對Select-String,請使用 CaseSensitive 參數。 對於使用正則表達式的運算符,請使用區分大小寫的版本: -cmatch、 -creplace或-csplit switch針對語句,請使用 ...
多行 此模式可识别行和字符串的开始和结尾。 默认模式为 单行。 RegexMatch 使用正则表达式匹配计算分隔符。 这是默认值。 SimpleMatch 在计算分隔符时使用简单的字符串比较。 单行 此模式仅识别字符串的开始和结尾。 它是默认模式。脚本块 (§7.1.8) 指定用于确定分隔符的规则,并且必须计算结果为 bool 类型。例...
變數$Matches也可在語句-Regex中使用 switch 參數。 其填入方式與 -match 和-notmatch 運算符相同。 如需 語句的詳細資訊 switch ,請參閱 about_Switch。注意 在工作階段中填入時 $Matches ,它會保留相符的值,直到被另一個相符專案覆寫為止。 如果 -match 再次使用,且找不到相符專案,則不會重設為 $Ma...
In Regex substitution strings, it denotes captured groups. Be sure to either put your regular expressions between single quotation marks or insert a backtick (`) character before them. For example: PowerShell Copy $1 = 'Goodbye' 'Hello World' -replace '(\w+) \w+', "$1 Universe" # ...
Consider refactoring this script by varying either the regex or files you want to search for, but keeping the same type of output. This is a two-foot dive into what you can do using PowerShellâs Select-String, regular expressions, and objects with properties. There is an entire...
$phoneNumber -match $regex | Out-Null Write-Output "($($Matches.areaCode))-$($Matches.first)-$($Matches.second)" } You can test the function by attempting to pass an invalid phone number: Format-PhoneNumber -PhoneNumber 123 PowerShell will give an error message after the Validate...
In some PowerShell expressions (matching operations) a backslash character will be interpreted as the start of a Regular Expression, (e.g. \w = match word) this is the industry-standard regex syntax. To escape this and treat the backslash as an ordinary character, double it (replace \ with...
) substitutes for any single character. NOTE As used in this example, the asterisk and question mark are not regular expression operators. In regex we use both the asterisk and the question mark, but they have slightly different functionality, which you'll see soon. Open an administrative ...
Starting the regex with(?x)ignores whitespace in the pattern (it has to be specified explicitly, with\s) and also enables the comment character#. Copy (?x)# this regex ignores whitespace in the pattern. Makes it possible do document a regex with comments.^# the start of the line\s+#...
For named character set blocks (e.g., Cyrillic), search for "supported named blocks" in the MSDN Library. regular expression operations Class:System.Text.RegularExpressions.Regex Pattern matching with Regex objects Pattern matching with static methods ...