' operator. ParserError: Line | 1 | (Test-Path .vscode) ? (Write-Host 'exists') : Write-Host 'not found' | ~ | You must provide a value expression following the ':' operator. 此示例分析: PowerShell (Test-Path.vscode) ? (Write-Host'exists') : (Write-Host'not found')...
This still works correctly in anifstatement. So a value is returned by your operator, then the whole statement is$true. PowerShell $array=1..6if($array-gt3) {# do something} There's one small trap hiding in the details here that I need to point out. When using the-neoperator this...
<statement> {-AND | -OR | -XOR} <statement> {! | -NOT} <statement> 使用逻辑运算符的语句返回布尔值 (TRUE 或 FALSE) 值。 PowerShell 逻辑运算符仅计算确定语句真实值所需的语句。 如果包含 和 运算符的语句中的左操作数为 FALSE,则不计算右操作数。 如果包含 或 语句的语句中的左操作数为 TRU...
# This statement returns true because book contains the string "oo" 'book' -match 'oo' 字元類別雖然字元常值可運作,但如果您知道確切的模式,字元類別可讓您較不明確。字元群組[character group] 可讓您一次比對任意數目的字元,而 [^character group] 只比對群組中的字元 NOT。PowerShell...
Adding If/Else Conditional Logic You can also use the PowerShell Not Equal operator inside the conditional statements, such as the if/else statement. Related:Back to Basics: Conditional Logic with PowerShell If-Else For example, a service must be running in most cases if its StartType value ...
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Operation statement. You can also write an operation statement, which is much more like natural language. You can use the operation statement to specify a property value or call a method. Operation statements were introduced in Windows PowerShell 3.0. ...
The call operator doesn't parse strings. This means that you can't use command parameters within a string when you use the call operator. PowerShell PS>$c="Get-Service -Name Spooler"PS>$cGet-Service-NameSpooler PS> &$c& : The term'Get-Service -Name Spooler'is not recognized as the...
In that case, just use the –notcontains operator, an operator that returns True if the target value can’t be found in the array. In other words:Copy $arrColors -notcontains "violet" Here’s what we get back:Copy True Why? Because it’s true that the word violet is not an ...
PowerShell executes the begin statement when it loads your script, the process statement for each item passed down the pipeline, and the end statement after all pipeline input has been processed. 3. 采用main函数的script语句 function Main