Tag: MacOS Mojave

Our Student Users don’t have admin rights. So it was necessary to adapt the [UsedPrinterName].ppd file. And set the Value from  DefaultAPOptionalDuplexer: False to True. magic: sed -i ” ‘s/*search_string/*replace_string/g’ /path/to/file.extension “-i ”” edit the changes into the same file (there is a blank between -i  and the double empty quote!