如果你只是在寻找输入文件的路径，那么你可以在Get-childitem部分硬编码你的完整路径来改变它。改变文件路径到任何你想要的输入文件路径和文件名，你应该很好。我已经在同一行添加了一个注解供你参考。

$scandir="C:\IT Tools\Print to PDF Powershell\Test-JPG"$scanlogdir="C:\IT Tools\Print to PDF Powershell\Logs"
$pdftoprint=""
$printername= "Nitro PDF Creator (Pro 9)"

#Change the file name and file path of the jpg file # Cleanup old pdf files - Change AddDays value as required
Get-ChildItem "$scanbdir\*.jpg" | ? {LastWriteTime -LT (Get-Date).AddDays(-15)} | Remove-Item -Confirm:$false

# Create a Log file $scanlogname
$scanlogname = Join-Path -Path $scanlogdir -ChildPath "$(Get-Date -Format 'MM-dd-yyyy').log"

# Get the List of files in the Directory
echo "$(get-date) - Checking for any scanned pdf files in $scandir" | Out-File -Append $scanlogname

(Get-WmiObject -ComputerName localhost -Class Win32_Printer -Filter "Name='Nitro PDF Creator (Pro 9)'").setdefaultprinter()

Get-ChildItem -Path $scandir -filter "*.jpg" | % {

Start-Process -FilePath $_.VersionInfo.FileName –Verb print

#out-printer -InputObject $scandir\$pdftoprint $printername

"$(get-date) - Printing file - $_ on Printer - $printername" | Out-File -Append $scanlogname

}