142 lines
5.3 KiB
Perl
142 lines
5.3 KiB
Perl
|
.\" Copyright (c) 1983, 1993
|
||
|
|
.\" The Regents of the University of California. All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" Redistribution and use in source and binary forms, with or without
|
||
|
|
.\" modification, are permitted provided that the following conditions
|
||
|
|
.\" are met:
|
||
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer.
|
||
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
||
|
|
.\" documentation and/or other materials provided with the distribution.
|
||
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
||
|
|
.\" must display the following acknowledgement:
|
||
|
|
.\" This product includes software developed by the University of
|
||
|
|
.\" California, Berkeley and its contributors.
|
||
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
||
|
|
.\" may be used to endorse or promote products derived from this software
|
||
|
|
.\" without specific prior written permission.
|
||
|
|
.\"
|
||
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
.\" SUCH DAMAGE.
|
||
|
|
.\"
|
||
|
|
.\" @(#)2.t 8.1 (Berkeley) 6/8/93
|
||
|
|
.\"
|
||
|
|
.NH 1
|
||
|
|
Commands
|
||
|
|
.NH 2
|
||
|
|
lpd \- line printer daemon
|
||
|
|
.PP
|
||
|
|
The program
|
||
|
|
.IR lpd (8),
|
||
|
|
usually invoked at boot time from the /etc/rc file, acts as
|
||
|
|
a master server for coordinating and controlling
|
||
|
|
the spooling queues configured in the printcap file.
|
||
|
|
When
|
||
|
|
.I lpd
|
||
|
|
is started it makes a single pass through the
|
||
|
|
.I printcap
|
||
|
|
database restarting any printers that have jobs.
|
||
|
|
In normal operation
|
||
|
|
.I lpd
|
||
|
|
listens for service requests on multiple sockets,
|
||
|
|
one in the UNIX domain (named ``/dev/printer'') for
|
||
|
|
local requests, and one in the Internet domain
|
||
|
|
(under the ``printer'' service specification)
|
||
|
|
for requests for printer access from off machine;
|
||
|
|
see \fIsocket\fP\|(2) and \fIservices\fP\|(5)
|
||
|
|
for more information on sockets and service
|
||
|
|
specifications, respectively.
|
||
|
|
.I Lpd
|
||
|
|
spawns a copy of itself to process the request; the master daemon
|
||
|
|
continues to listen for new requests.
|
||
|
|
.PP
|
||
|
|
Clients communicate with
|
||
|
|
.I lpd
|
||
|
|
using a simple transaction oriented protocol.
|
||
|
|
Authentication of remote clients is done based
|
||
|
|
on the ``privilege port'' scheme employed by
|
||
|
|
\fIrshd\fP\|(8C) and \fIrcmd\fP\|(3X).
|
||
|
|
The following table shows the requests
|
||
|
|
understood by
|
||
|
|
.IR lpd .
|
||
|
|
In each request the first byte indicates the
|
||
|
|
``meaning'' of the request, followed by the name
|
||
|
|
of the printer to which it should be applied. Additional
|
||
|
|
qualifiers may follow, depending on the request.
|
||
|
|
.DS
|
||
|
|
.TS
|
||
|
|
l l.
|
||
|
|
Request Interpretation
|
||
|
|
_
|
||
|
|
^Aprinter\en check the queue for jobs and print any found
|
||
|
|
^Bprinter\en receive and queue a job from another machine
|
||
|
|
^Cprinter [users ...] [jobs ...]\en return short list of current queue state
|
||
|
|
^Dprinter [users ...] [jobs ...]\en return long list of current queue state
|
||
|
|
^Eprinter person [users ...] [jobs ...]\en remove jobs from a queue
|
||
|
|
.TE
|
||
|
|
.DE
|
||
|
|
.PP
|
||
|
|
The \fIlpr\fP\|(1) command
|
||
|
|
is used by users to enter a print job in a local queue and to notify
|
||
|
|
the local
|
||
|
|
.I lpd
|
||
|
|
that there are new jobs in the spooling area.
|
||
|
|
.I Lpd
|
||
|
|
either schedules the job to be printed locally, or if
|
||
|
|
printing remotely, attempts to forward
|
||
|
|
the job to the appropriate machine.
|
||
|
|
If the printer cannot be opened or the destination
|
||
|
|
machine is unreachable, the job will remain queued until it is
|
||
|
|
possible to complete the work.
|
||
|
|
.NH 2
|
||
|
|
lpq \- show line printer queue
|
||
|
|
.PP
|
||
|
|
The \fIlpq\fP\|(1)
|
||
|
|
program works recursively backwards displaying the queue of the machine with
|
||
|
|
the printer and then the queue(s) of the machine(s) that lead to it.
|
||
|
|
.I Lpq
|
||
|
|
has two forms of output: in the default, short, format it
|
||
|
|
gives a single line of output per queued job; in the long
|
||
|
|
format it shows the list of files, and their sizes, that
|
||
|
|
comprise a job.
|
||
|
|
.NH 2
|
||
|
|
lprm \- remove jobs from a queue
|
||
|
|
.PP
|
||
|
|
The \fIlprm\fP\|(1) command deletes jobs from a spooling
|
||
|
|
queue. If necessary, \fIlprm\fP will first kill off a
|
||
|
|
running daemon that is servicing the queue and restart
|
||
|
|
it after the required files are removed. When removing
|
||
|
|
jobs destined for a remote printer, \fIlprm\fP acts
|
||
|
|
similarly to \fIlpq\fP except it first checks locally
|
||
|
|
for jobs to remove and then
|
||
|
|
tries to remove files in queues off-machine.
|
||
|
|
.NH 2
|
||
|
|
lpc \- line printer control program
|
||
|
|
.PP
|
||
|
|
The
|
||
|
|
.IR lpc (8)
|
||
|
|
program is used by the system administrator to control the
|
||
|
|
operation of the line printer system.
|
||
|
|
For each line printer configured in /etc/printcap,
|
||
|
|
.I lpc
|
||
|
|
may be used to:
|
||
|
|
.IP \(bu
|
||
|
|
disable or enable a printer,
|
||
|
|
.IP \(bu
|
||
|
|
disable or enable a printer's spooling queue,
|
||
|
|
.IP \(bu
|
||
|
|
rearrange the order of jobs in a spooling queue,
|
||
|
|
.IP \(bu
|
||
|
|
find the status of printers, and their associated
|
||
|
|
spooling queues and printer daemons.
|