PS> $PSDefaultParameterValues Name Value --- --- Disabled True Get-WinEvent:LogName Microsoft-Windows-PrintService/Operational Get-*:Verbose True Send-MailMessage:SmtpServer ServerXYZ 若要重新启用$PSDefaultParameterValues,请删除Disabled键,或将Disabled键的值更改为$False。 的上...
PowerShell 3.0 中引入了 $PSDefaultParameterValues。 有关此首选项变量的详细信息,请参阅 about_Parameters_Default_Values。 $PSEmailServer 指定用于发送电子邮件的默认电子邮件服务器。 此首选项变量由发送电子邮件的 cmdlet 使用,例如 Send-MailMessage cmdlet。 $PSModuleAutoloadingPreference 启用和禁用会话中...
For example, the default value of theComputerNameparameter of many cmdlets is the name of the local computer. As a result, the local computer name is used in the command unless theComputerNameparameter is specified. To find the default parameter value, see help topic for the cmdlet. The par...
Each entry in this hash table defines a cmdlet, a parameter and a default value for that parameter. The hash table key is the name of the cmdlet, followed by a colon (:), and then the name of the parameter. The hash table value for this key is the new default value for the parame...
[Parameter(Mandatory=$true)][String]$Key, [Parameter(Mandatory=$true)][String]$Name, [Parameter(Mandatory=$true)][String]$Operator, [Parameter(Mandatory=$true)]$DefaultValue, [Parameter(Mandatory=$true)][String]$Msg)try{$Value=Get-ItemPropertyValue-Path"Registry::$Key"-ErrorActionIgnore-Warning...
false -Name <String[]> Specifies the service names for the service to be started. The parameter name is optional. You can use Name or its alias, ServiceName, or you can omit the parameter name. Required? true Position? 0 Default value None Accept pipeline input? True (ByPropertyName, By...
The ErrorAction parameter is used to override the $ErrorActionPreference value. This example shows the $ErrorActionPreference default value, Continue. A non-terminating error is generated. The message is displayed and processing continues. PowerShell Copy # Change the ErrorActionPreference to '...
DEBUG: Hello, World Confirm Continue with this operation? [Y] Yes [A] Yes to All [H] Halt Command [?] Help (default is "Y"): This example uses the Debug parameter with a value of $false to suppress the message for a single command. The debug message isn't displayed and processi...
Get-Help TestDefaultValue -Parameter name Output 复制 -Name <String> Required? false Position? 1 Default value Current directory Accept pipeline input? false Accept wildcard characters? false PSDefaultValue 属性参数PSDefaultValue 属性具有两个参数:帮助...
[Parameter(Mandatory, ValueFromPipeline)] [string[]]$ComputerName)PROCESS{ Write-Output$ComputerName} } BEGIN和END块是可选的。BEGIN在PROCESS块之前指定,用于在从管道接收项之前执行任何初始工作。 了解这一点很重要。 在BEGIN块中无法访问通过管道传入的值。END块将在PROCESS块之后指定,用于在处理完通过管道传...