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in.lpd implements the network listening service
for the BSD print protocol specified in RFC 1179. The BSD
print protocol provides a remote interface for systems to interact with
a local spooling system. The protocol defines five standard requests from
the client to the server: starting queue processing, transfering print jobs,
retrieving terse status, retrieving verbose status, and canceling print
jobs.
in.lpd is started from inetd
(see inetd(1M)). inetd
waits for connections on TCP port 515.
Upon receipt of a connect request, in.lpd is started
to service the connection. Once the request has been filled, in.lpd closes the connection and exits.
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