How can I pass an argument to a PowerShell script?

Tested as working:

#Must be the first statement in your script (not coutning comments)param([Int32]$step=30) $iTunes = New-Object -ComObject iTunes.Applicationif ($iTunes.playerstate -eq 1){  $iTunes.PlayerPosition = $iTunes.PlayerPosition + $step}

Call it with

powershell.exe -file itunesForward.ps1 -step 15

Multiple parameters syntax (comments are optional, but allowed):

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

You can use also the $args variable (that's like position parameters):

$step = $args[0]$iTunes = New-Object -ComObject iTunes.Applicationif ($iTunes.playerstate -eq 1){  $iTunes.PlayerPosition = $iTunes.PlayerPosition + $step}

Then it can be called like:

powershell.exe -file itunersforward.ps1 15

Call the script from a batch file (*.bat) or CMD

PowerShell Core

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"

Call from PowerShell

PowerShell Core or Windows PowerShell

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

Script.ps1 - Script Code

param(    [Parameter(Mandatory=$True, Position=0, ValueFromPipeline=$false)]    [System.String]    $Param1,    [Parameter(Mandatory=$True, Position=1, ValueFromPipeline=$false)]    [System.String]    $Param2)Write-Host $Param1Write-Host $Param2