Small PowerShell snippet for converting .doc(x) files to PDF, tested with Word 2010

word2pdf.ps1

function Word2PDF {
    $src_path = $args[0]
    if($src_path -eq $null){
        Write-Host "Usage: Word2PDF source-files-dir"
        return
    }

    if(!(Test-Path $src_path -PathType Container)){
        throw "Path $src_path doesn't exist or is not a directory."
    }

    $word_app = New-Object -ComObject Word.Application
    Get-ChildItem -Path $src_path -Filter *.doc? | ForEach-Object {
        Write-Host "Converting $_"
        $document = $word_app.Documents.Open($_.FullName)
        $pdf_filename = "$($_.DirectoryName)\$($_.BaseName).pdf"
        $document.SaveAs([ref] $pdf_filename, [ref] 17)
        $document.Close()
    }

    $word_app.Quit()
}