= Not equal <> Not equal < Less than > Greater than <= Less than or equal >= Greater than or equal LIKE Wildcard match IS Evaluates null ISNOT Evaluates not null ISA Evaluates a member of a WMI class 还有其他运算符,
In a gist, the PowerShell Not Equal operator (-ne) determines whether the value of two objects is not equal and returns a Boolean value based on the result. If the values are not equal, the result isTrue; otherwise, the result isFalse. But how and when do you use the PowerShell Not...
-bnot二進位 NOT 左移-shl -shr右移 PowerShell 表達式 我們可以在條件語句內使用一般 PowerShell。 PowerShell if(Test-Path-Path$Path) Test-Path會在執行時傳回$true或$false。 這也適用於傳回其他值的命令。 PowerShell if(Get-ProcessNotepad* ) ...
所在位置行:1字符:13+MyScript.ps1<<<+CategoryInfo:ObjectNotFound:(MyScript.ps1:String)[],CommandNotFoundException+FullyQualifiedErrorId:CommandNotFoundExceptionSuggestion[3,General]:未找到命令MyScript.ps1,但它确实存在于当前位置。WindowsPowerShell默认情况下不从当前位置加载命令。如果信任此命令,请改为键入...
To define a default value for a parameter, type an equal sign and the value after the parameter name, as shown in the following variation of theGet-SmallFilesexample: PowerShell functionGet-SmallFiles($Size=100) {Get-ChildItem$HOME|Where-Object{$_.Length-lt$Size-and!$_.PSIsContainer } } ...
Use comparison operators (-eq,-ne,-gt,-lt,-le,-ge) to compare values and test conditions. For example, you can compare two string values to determine whether they're equal. The comparison operators also include operators that find or replace patterns in text. The (-match,-notmatch,-repla...
This cmdlet returns the highest severity level from the error messages generated by the queries it runs, provided that severity is equal to or higher than specified in the SeverityLevel parameter. If SeverityLevel is not specified or set to 0, this cmdlet returns 0 to ERRORLEVEL. The severity...
The value of this parameter must be less than or equal to the value of the RecoverableItemsQuota parameter. When the UseDatabaseQuotaDefaults parameter on the mailbox is set to the value $true (the default value), the value of the this parameter is ignored, and the mailbox uses the Cale...
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Write-Host "x is less than or equal to 20" } 输出: x is less than or equal to20 还有一种 if-elseif-else 语句的用法,这种语句可以检查多个条件并执行相应的命令或 代码块。 语法结构如下: if (condition1) { # commands or script block for condition1 } elseif (condition2) { powershell语...