如何将参数传递给PowerShell脚本？

有一个PowerShell名为的脚本itunesForward.ps1可使iTunes快进30秒：

$iTunes = New-Object -ComObject iTunes.Application

if ($iTunes.playerstate -eq 1)
{
  $iTunes.PlayerPosition = $iTunes.PlayerPosition + 30
}

通过提示行命令执行：

powershell.exe itunesForward.ps1

是否可以从命令行传递参数并将其应用到脚本中，而不是硬编码的30秒值？

经测试工作正常：

param([Int32]$step=30) #Must be the first statement in your script

$iTunes = New-Object -ComObject iTunes.Application

if ($iTunes.playerstate -eq 1)
{
  $iTunes.PlayerPosition = $iTunes.PlayerPosition + $step
}

叫它

powershell.exe -file itunesForward.ps1 -step 15

您还可以使用$args变量（类似于位置参数）：

$step=$args[0]

$iTunes = New-Object -ComObject iTunes.Application

if ($iTunes.playerstate -eq 1)
{
  $iTunes.PlayerPosition = $iTunes.PlayerPosition + $step
}

然后可以这样调用：

powershell.exe -file itunersforward.ps1 15

从批处理文件（* .bat）或CMD调用脚本

Powershell核心

pwsh.exe -NoLogo -ExecutionPolicy Bypass -Command "./Script.ps1 -Param1 Hello -Param2 World"

pwsh.exe -NoLogo -ExecutionPolicy Bypass -Command "path-to-script/Script.ps1 -Param1 Hello -Param2 World"

电源外壳

powershell.exe -NoLogo -ExecutionPolicy Bypass -Command "./Script.ps1 -Param1 Hello -Param2 World"

powershell.exe -NoLogo -ExecutionPolicy Bypass -Command "path-to-script/Script.ps1 -Param1 Hello -Param2 World"

Powershell Core或Windows Powershell

& path-to-script/Script.ps1 -Param1 Hello -Param2 World
& ./Script.ps1 -Param1 Hello -Param2 World

Script.ps1-脚本代码

param(
    [Parameter(Mandatory=$True, Position=0, ValueFromPipeline=$false)]
    [System.String]
    $Param1,

    [Parameter(Mandatory=$True, Position=1, ValueFromPipeline=$false)]
    [System.String]
    $Param2
)

Write-Host $Param1
Write-Host $Param2

让Powershell分析并确定数据类型在
内部为此使用'Variant'...
通常做得很好...

param( $x )
$iTunes = New-Object -ComObject iTunes.Application
if ( $iTunes.playerstate -eq 1 ) 
    { $iTunes.PlayerPosition = $iTunes.PlayerPosition + $x }

或者如果您需要传递多个参数

param( $x1, $x2 )
$iTunes = New-Object -ComObject iTunes.Application
if ( $iTunes.playerstate -eq 1 ) 
    { 
    $iTunes.PlayerPosition = $iTunes.PlayerPosition + $x1 
    $iTunes.<AnyProperty>  = $x2
    }

使用文件中的以下代码创建一个powershell脚本。

param([string]$path)
Get-ChildItem $path | Where-Object {$_.LinkType -eq 'SymbolicLink'} | select name, target

这将创建一个带有path参数的脚本。它将列出提供的路径内的所有符号链接以及符号链接的指定目标。

您也可以直接在PowerShell命令行中定义变量，然后执行脚本。该变量也将在此处定义。这在无法修改签名脚本的情况下对我有帮助。

例：

 PS C:\temp> $stepsize = 30
 PS C:\temp> .\itunesForward.ps1

与iTunesForward.ps1

$iTunes = New-Object -ComObject iTunes.Application

if ($iTunes.playerstate -eq 1)
{
  $iTunes.PlayerPosition = $iTunes.PlayerPosition + $stepsize
}

#ENTRY POINT MAIN()
Param(
    [Parameter(Mandatory=$True)]
    [String] $site, 
    [Parameter(Mandatory=$True)]
    [String] $application, 
    [Parameter(Mandatory=$True)]
    [String] $dir,
    [Parameter(Mandatory=$True)]
    [String] $applicationPool
)

#Create Web IIS Application
function ValidateWebSite ([String] $webSiteName)
{
    $iisWebSite = Get-Website -Name $webSiteName
    if($Null -eq $iisWebSite)
    {
        Write-Error -Message "Error: Web Site Name: $($webSiteName) not exists."  -Category ObjectNotFound
    }
    else
    {
        return 1
    }
}

#Get full path form IIS WebSite
function GetWebSiteDir ([String] $webSiteName)
{
 $iisWebSite = Get-Website -Name $webSiteName
  if($Null -eq $iisWebSite)
  {
  Write-Error -Message "Error: Web Site Name: $($webSiteName) not exists."  -Category ObjectNotFound
  }
 else
 {
  return $iisWebSite.PhysicalPath
 }
}

#Create Directory
    function CreateDirectory([string]$fullPath)
    {
    $existEvaluation = Test-Path $fullPath -PathType Any 
    if($existEvaluation -eq $false)
    {
        new-item $fullPath -itemtype directory
    }
    return 1   
}

function CreateApplicationWeb
{        
    Param(
        [String] $WebSite, 
        [String] $WebSitePath, 
        [String] $application, 
        [String] $applicationPath,
        [String] $applicationPool
        )
    $fullDir = "$($WebSitePath)\$($applicationPath)"
    CreateDirectory($fullDir)
    New-WebApplication -Site $WebSite -Name $application -PhysicalPath $fullDir -ApplicationPool $applicationPool -Force
}

$fullWebSiteDir = GetWebSiteDir($Site)f($null -ne $fullWebSiteDir)
{
    CreateApplicationWeb -WebSite $Site -WebSitePath $fullWebSiteDir -application $application  -applicationPath $dir -applicationPool $applicationPool
}