A small PowerShell script to check if one or more shared printer(s) is known on a given printer server

Test-Printer.ps1

# SPDX-License-Identifier: 0BSD
# Author: Simon Buschendorf (github.com/SkyyySi)
#
# To invoke this script, run it like this:
#
#    powershell.exe -File '.\Test-Printer.ps1' -Name 'foo'
#
# Or, for multiple printers, like this:
#
#    powershell.exe -Command "& '.\Test-Printer.ps1' -Name @('foo', 'bar')"
param (
	[Parameter(Mandatory=$true)]
	[string[]]$Name,
	[string]$ComputerName = $null,
	[ValidateSet('Hashtable', 'Array', 'Boolean')]
	[string]$OutputType = 'Hashtable'
)

$ErrorActionPreference = 'Stop'

#Write-Host "`$Name         = @($($Name -join ', ')) [$($Name.Length)]"
#Write-Host "`$ComputerName = ${ComputerName}"
#Write-Host "`$OutputType   = ${OutputType}"

[ciminstance[]]$knownPrinters = if ($ComputerName) {
	Get-Printer -ComputerName $ComputerName
} else {
	Get-Printer
}

[string[]]$knownPrinterNames = ($knownPrinters | ForEach-Object { $_.Name })

[System.Collections.Generic.Dictionary[string, bool]]$printerAvailabilityTable = @{}

$Name | ForEach-Object {
	$printerAvailabilityTable[$_] = ($_ -in $knownPrinterNames)
}

switch ($OutputType) {
	'Hashtable' {
		$printerAvailabilityTable
	}
	'Array' {
		$printerAvailabilityTable.GetEnumerator() | Where-Object {
			$_.Value
		} | ForEach-Object {
			$_.Value
		}
	}
	'Boolean' {
		$false -notin $printerAvailabilityTable.Values
	}
}