ComputerName Verbose Debug ErrorAction WarningAction InformationAction ErrorVariable WarningVariable InformationVariable OutVariable OutBuffer PipelineVariable WhatIf Confirm 参数验证 尽早验证输入。 如果没有有效输入则无法完成,不
PS>$null-eq$undefinedVariableTrue 如果碰巧错误键入变量名称,PowerShell 会将它视为不同的变量,并且值为$null。 找到$null值的另一种方法是,当它们来自未提供任何结果的其他命令时。 PowerShell PS>functionGet-Nothing{} PS>$value=Get-NothingPS>$null-eq$valueTrue ...
ERROR: Variable: found in expression: is not defined. ERROR:Cannot process argument transformation on parameter 'DriveLetter'. Cannot convert value "$DriveLetter" to type "System.Char". Error: "String must be exactly one character long." escape the single quote inside an insert statement Escapin...
Get-WindowsFeature cmdlet.$env:PSModulePath=$WindowsPSModuleFolder# Call Windows PowerShell to get the info about the Web-Server feature&$WindowsPSExe-command$WindowsFeatureScriptBlock-args$FileName}finally{# Reset the env variable even if there's an error.$env:PSModulePath=$InitialPSModulePath...
Remove-VariableMicrosoft.PowerShell.Utilityhelp Remove-WmiObjectMicrosoft.PowerShell.Managementhelp Remove-WSManInstanceMicrosoft.WSMan.Managementhelp Rename-ItemMicrosoft.PowerShell.Managementhelp Rename-ItemPropertyMicrosoft.PowerShell.Managementhelp Reset-ComputerMachinePasswordMicrosoft.PowerShell.Managementhelp Resolve...
Clear-VariableDeletes the value of a variable. Compare-ObjectCompares two sets of objects. Complete-BitsTransferCompletes a BITS transfer job. Complete-TransactionCommits the active transaction. Connect-WSManConnects to the Windows Remote Management (WinRM) service on a remote computer. ...
The $ErrorActionPreference variable takes one of the ActionPreference enumeration values: SilentlyContinue, Stop, Continue, Inquire, Ignore, Suspend, or Break. You can use a cmdlet's ErrorAction common parameter to override the preference for a specific command. The valid values are as follows...
Example 1: Using the $input variable In the following example, accessing the $input variable clears the variable until the next time the process block executes. Using the Reset method resets the $input variable to the current pipeline value. PowerShell Copy function Test { begin { $i =...
PowerShell displays the error; Exception calling"LoadFrom"with"1"argument(s):"Couldnotloadfileorassembly 'file:///C:\Windows\System32\WindowsPowerShell\v1.0\Modules\PlannerTenantAdmin\Microsoft.Identity.Client.dll'oroneofitsdependencies. Operationis notsupported.(ExceptionfromHRESULT:0x80131515)"...
The password for the test account is typically reset every seven days. Use this switch to force a password reset any time it's required for security reasons. Type:SwitchParameter Position:Named Default value:None Required:False Accept pipeline input:False ...