95 lines
3.7 KiB
Perl
95 lines
3.7 KiB
Perl
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.\" Copyright (c) 1983, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)6.t 8.1 (Berkeley) 6/8/93
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.\"
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.NH 1
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Line printer Administration
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.PP
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The
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.I lpc
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program provides local control over line printer activity.
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The major commands and their intended use will be described.
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The command format and remaining commands are described in
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.IR lpc (8).
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.LP
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\fBabort\fP and \fBstart\fP
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.IP
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.I Abort
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terminates an active spooling daemon on the local host immediately and
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then disables printing (preventing new daemons from being started by
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.IR lpr ).
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This is normally used to forcibly restart a hung line printer daemon
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(i.e., \fIlpq\fP reports that there is a daemon present but nothing is
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happening). It does not remove any jobs from the queue
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(use the \fIlprm\fP command instead).
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.I Start
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enables printing and requests \fIlpd\fP to start printing jobs.
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.LP
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\fBenable\fP and \fBdisable\fP
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.IP
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\fIEnable\fP and \fIdisable\fP allow spooling in the local queue to be
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turned on/off.
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This will allow/prevent
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.I lpr
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from putting new jobs in the spool queue. It is frequently convenient
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to turn spooling off while testing new line printer filters since the
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.I root
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user can still use
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.I lpr
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to put jobs in the queue but no one else can.
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The other main use is to prevent users from putting jobs in the queue
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when the printer is expected to be unavailable for a long time.
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.LP
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\fBrestart\fP
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.IP
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.I Restart
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allows ordinary users to restart printer daemons when
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.I lpq
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reports that there is no daemon present.
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.LP
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\fBstop\fP
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.IP
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.I Stop
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halts a spooling daemon after the current job completes;
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this also disables printing. This is a clean way to shutdown a
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printer to do maintenance, etc. Note that users can still enter jobs in a
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spool queue while a printer is
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.IR stopped .
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.LP
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\fBtopq\fP
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.IP
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.I Topq
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places jobs at the top of a printer queue. This can be used
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to reorder high priority jobs since
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.I lpr
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only provides first-come-first-serve ordering of jobs.
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