functionInvoke-CmdScript{ param( [String]$scriptName ) $cmdLine="""$scriptName""$args& set" &$Env:SystemRoot\system32\cmd.exe /c$cmdLine| select-string'^([^=]*)=(.*)$'|foreach-object{ $varName=$_.Matches[0].Groups[1].Value $varValue=$_.Matches[0].Groups[2].Value set-itemE...
function inc ([parameter(ValueFromPipeline)]$x) {return $x + 1} Write-Host (3 | inc) #输出为:4 五、使用引用 函数参数可使用引用类型,使用引用类型之后便可以在函数中修改外部变量的数值。 在参数前使用[ref]指定使用引用类型。如function f ([ref]$x)。传参时,要求把传入数值转换为引用类型,转换...
3、通过cmd命令直接执行 需要加关键字PowerShell才可以识别是执行的PowerShell命令。命令格式：PowerShell ...
$a="Hello World"$areturn Thereturnkeyword is also not needed in the second script block, as calling the variable in the command-line will explicitly return that said variable. Return Values in the Pipeline in PowerShell When you return a value from your script block or function, Windows Pow...
Functions can return values that can be displayed, assigned to variables, or passed to other functions or cmdlets. You can use thereturnkeyword to return output. Thereturnkeyword doesn't affect or suppress other output returned from your function. However, thereturnkeyword exits the function at ...
$Env:<variable-name> ="<new-value>" 例如,若要创建环境变量,请执行以下操作Foo: PowerShell复制 $Env:Foo='An example' 由于环境变量始终是字符串,因此可以像使用包含字符串的任何其他变量一样使用它们。 例如: PowerShell复制 "The 'Foo' environment variable is set to:$Env:Foo"$Env:Foo+='!'$E...
The problem with the current definition is that it's valid to omit the value of the ComputerName parameter, but a value is required for the function to complete successfully. This scenario is where the Mandatory parameter attribute is beneficial. The syntax used in the following example is comp...
/How to call a function in another PowerShell script #TYPE System.Data.DataRow Is 1st line of SSMS To CSV %username% variable in Powershell + CategoryInfo : NotSpecified: (:String) [], RemoteException <' operator is reserved for future use $_ '-msDS-cloudExtensionAttribute1' attribute not...
}// End of function BeginProcessing(). 此cmdlet 还重写 System.Management.Automation.Cmdlet.ProcessRecord 方法,以处理用户在命令行上进行的字符串选择。 它通过调用私有 MatchString 方法,以自定义对象的形式写入字符串选择的结果。 C# 复制 protected override void ProcessRecord() { UInt64 lineNumber ...
PS C:\> AssignValueToParam $name inside function: WangLei PS C:\> Write-Host "outside function: $name" outside function: LiMing新创建的变量会在当前作用域中覆盖之前传递的参数,原参数值不变,为改变传递到函数中的参数值,可以使用Get-Variable和Set-Variable在复杂的作用域间更改变量值。下例创建的函...