Line Printer Daemon protocol

Network printing protocol

The Line Printer Daemon protocol/Line Printer Remote protocol is a network printing protocol for submitting print jobs to a remote printer. The original implementation of LPD was in the Berkeley printing system in the BSD UNIX operating system; the LPRng project also supports that protocol. The Common Unix Printing System, which is more common on modern Linux distributions and also found on macOS, supports LPD as well as the Internet Printing Protocol (IPP). Commercial solutions are available that also use Berkeley printing protocol components, where more robust functionality and performance is necessary than is available from LPR/LPD alone. The LPD Protocol Specification is documented in RFC 1179.

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