让PowerShell分析并决定数据类型。它在内部使用了一个“变体”。

总的来说，它做得很好……

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

或者如果你需要传递多个参数:

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

测试为工作状态:

#Must be the first statement in your script (not counting comments)
param([Int32]$step=30) 

$iTunes = New-Object -ComObject iTunes.Application

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

用

powershell.exe -file itunesForward.ps1 -step 15

多参数语法(注释是可选的，但允许):

<#
    Script description.

    Some notes.
#>
param (
    # height of largest column without top bar
    [int]$h = 4000,
    
    # name of the output image
    [string]$image = 'out.png'
)

以及一些高级参数的示例，例如Mandatory:

<#
    Script description.

    Some notes.
#>
param (
    # height of largest column without top bar
    [Parameter(Mandatory=$true)]
    [int]$h,
    
    # name of the output image
    [string]$image = 'out.png'
)

Write-Host "$image $h"

默认值不能与强制参数一起使用。对于布尔[参数(必选)]类型的高级参数，可以省略=$true。

在文件中使用以下代码创建一个PowerShell脚本。

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

这将创建一个带有路径参数的脚本。它将列出所提供路径中的所有符号链接以及符号链接的指定目标。

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"

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

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

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

PowerShell

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

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

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

从PowerShell调用

PowerShell Core或Windows PowerShell

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

脚本。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

你也可以使用$args变量(就像位置参数一样):

$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

# 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 from 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
}