Print a PDF file with dialog:
AcroRd32.exe /P PdfFile
Print a PDF file silently:
AcroRd32.exe /N /T PdfFile PrinterName [ PrinterDriver [ PrinterPort ] ]
http://www.robvanderwoude.com/commandlineswitches.php#Acrobat
/n - Launch a new instance of Reader even if one is already open /s - Don't show the splash screen /o - Don't show the open file dialog /h - Open as a minimized window /p - Open and go straight to the print dialog /t - Print the file the specified printer.
ZPL
https://www.zebra.com/us/en/support-downloads/knowledge-articles/using-zpl-stored-formats.html https://developer.zebra.com/thread/30717 https://www.zebra.com/content/dam/zebra/manuals/printers/common/zpl-zbi2-pm-en.pdf
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