lpr

I still use an ancient PostScript SIMM equipped HP LaserJet 6MP. It is shared via a USB-to-IEE1284 dongle, from a Synology NAS which uses CUPS. I have a Macintosh SE/30 which now has a BlueSCSI v2 with wifi. Surely I could get the old Mac to print... It took a crazy amount of reading, tinkering...