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Information About

Line Printer Daemon





COMMANDS

The official LPD protocol defines the following commands:
  • lpr—Assign a job to a queue.

  • lpq—Display the jobs assigned to a queue and their print status.

  • lprm—Remove a job from a queue.

  • lpc—Control a queue.

  • The lpd program provides the Daemon and queues with which the aforementioned commands interface.



USAGE

In order for a system to provide print functionality using LPD, the lpd program must be configured and started. Based upon its configuration, it will create the necessary queues and address the printers available to users of the system. Once started, it listens for local messages from the lpr, lpq, lprm, and lpc programs, as well as for network messages from remote clients who also implement the LPD protocol.

A printer that supports LPD/LPR is sometimes referred to as a "TCP/IP printer" ( TCP/IP is used to establish connections between printers and workstations on a network), although that term seems equally applicable to a printer that supports CUPS.


REFERENCES

  • RFC 1179



SEE ALSO



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