PowerShell 复制 # This statement returns true because book contains the string "oo" 'book' -match 'oo' 字符类虽然字符文本在知道确切的模式时工作,但字符类允许你不太具体。字符组[character group] 允许一次匹配任意数量的字符,而 [^character group] 仅匹配组中的字符 NOT。Powe...
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...
Find String Starting Position with regex Find string using pattern and return only the matched string Find the number of times a character '\' exists in a string Find the third indexOf a character in string Find Unknown Devices with PowerShell Find userID and Display Name from ManagedBy - P...
$value='S-ATX-SQL01'if($value-match'S-\w\w\w-SQL\d\d') {# do something} A regex pattern matches anywhere in the string by default. So you can specify a substring that you want matched like this: PowerShell $value='S-ATX-SQL01'if($value-match'SQL') {# do something} ...
expandable-string-literal verbatim-here-string-literal variable generic-token-char generic-token-char: Any Unicode character except { } ( ) ; , | & $ ` (The backtick character U+0060) double-quote-character single-quote-character whitespace new-line-character escaped-character generic-token-with...
Combining these, we can create a pattern like below to match a text like: The above pattern can be written like this using thex(ignore pattern whitespace) modifier. Starting the regex with(?x)ignores whitespace in the pattern (it has to be specified explicitly, with\s) and also enables ...
SPL:This returns a sequence of positions. It takes four parameters: re1, re2, init, incr. SPL finds all positions that match regex re1 on its left and match regex re2 on its right. From this sequence it selects every incr’th item starting at index init. ...
Breaking down the regex, by rewriting it with thexoption: Copy (?x)# ignore whitespace in the pattern, and enable comments after '#'\s+# one or more spaces(?=[-/]) # only match the previous spaces if they are followed by any of '-' or '/'. ...
Incidentally, you can put these wildcard characters anywhere in the string. Want to take action if thelastcharacter in $a is the letterd? Then use this command, with the letterdcomingafterthe asterisk: "*d" {"The color is yellow."} ...
You need to specify a regular expression pattern to match the filename and/or an ANSI escape sequence. If the entry description doesn't exist, you will need to specify the regex pattern and the ANSI sequence to add the entry to $PSAnsiFileMap.Set-PSAnsiFileMap Archive -Ansi "`e[38;5...