290 lines
7.8 KiB
Groff
290 lines
7.8 KiB
Groff
.\" Copyright (c) 1983, 1991 Regents of the University of California.
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.\" 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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.\" from: @(#)printcap.5 6.6 (Berkeley) 5/10/91
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.\" $Id: printcap.5,v 1.3 1994/04/06 05:29:32 mycroft Exp $
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.\"
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.Dd May 10, 1991
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.Dt PRINTCAP 5
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.Os BSD 4.2
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.Sh NAME
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.Nm printcap
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.Nd printer capability data base
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.Sh SYNOPSIS
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.Nm printcap
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.Sh DESCRIPTION
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The
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.Nm Printcap
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function
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is a simplified version of the
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.Xr termcap 5
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data base
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used to describe line printers. The spooling system accesses the
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.Nm printcap
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file every time it is used, allowing dynamic
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addition and deletion of printers. Each entry in the data base
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is used to describe one printer. This data base may not be
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substituted for, as is possible for
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.Xr termcap ,
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because it may allow accounting to be bypassed.
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.Pp
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The default printer is normally
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.Em lp ,
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though the environment variable
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.Ev PRINTER
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may be used to override this. Each spooling utility supports an option,
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.Fl P Ar printer ,
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to allow explicit naming of a destination printer.
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.Pp
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Refer to the
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.%T "4.3 BSD Line Printer Spooler Manual"
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for a complete discussion on how setup the database for a given printer.
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.Sh CAPABILITIES
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Refer to
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.Xr termcap 5
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for a description of the file layout.
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.Bl -column Name Type "/var/spool/lpd"
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.Sy Name Type Default Description
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.It "af str" Ta Dv NULL Ta No "name of accounting file"
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.It "br num none if lp is a tty, set the baud rate"
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.Pf ( Xr ioctl 2
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call)
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.It "cf str" Ta Dv NULL Ta No "cifplot data filter"
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.It "df str" Ta Dv NULL Ta No "tex data filter"
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.Pf ( Tn DVI
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format)
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.It "fc num 0 if lp is a tty, clear flag bits"
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.Pq Pa sgtty.h
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.It "ff str" Ta So Li \ef Sc Ta No "string to send for a form feed"
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.It "fo bool false print a form feed when device is opened"
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.It "fs num 0 like `fc' but set bits"
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.It "gf str" Ta Dv NULL Ta No "graph data filter"
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.Pf ( Xr plot 3
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format
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.It "hl bool false print the burst header page last"
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.It "ic bool false driver supports (non standard) ioctl to indent printout"
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.It "if str" Ta Dv NULL Ta No "name of text filter which does accounting"
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.It "lf str" Ta Pa /dev/console Ta No "error logging file name"
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.It "lo str" Ta Pa lock Ta No "name of lock file"
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.It "lp str" Ta Pa /dev/lp Ta No "device name to open for output"
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.It "mx num 1000 maximum file size (in"
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.Dv BUFSIZ
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blocks), zero = unlimited
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.It "nd str" Ta Dv NULL Ta No "next directory for list of queues (unimplemented)"
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.It "nf str" Ta Dv NULL Ta No "ditroff data filter (device independent troff)"
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.It "of str" Ta Dv NULL Ta No "name of output filtering program"
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.It "pc num 200 price per foot or page in hundredths of cents"
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.It "pl num 66 page length (in lines)"
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.It "pw num 132 page width (in characters)"
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.It "px num 0 page width in pixels (horizontal)"
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.It "py num 0 page length in pixels (vertical)"
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.It "rf str" Ta Dv NULL Ta No "filter for printing"
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.Tn FORTRAN
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style text files
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.It "rg str" Ta Dv NULL Ta No "restricted group. Only members of group allowed access"
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.It "rm str" Ta Dv NULL Ta No "machine name for remote printer"
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.It "rp str ``lp'' remote printer name argument"
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.It "rs bool false restrict remote users to those with local accounts"
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.It "rw bool false open the printer device for reading and writing"
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.It "sb bool false short banner (one line only)"
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.It "sc bool false suppress multiple copies"
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.It "sd str" Ta Pa /var/spool/lpd Ta No "spool directory"
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.It "sf bool false suppress form feeds"
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.It "sh bool false suppress printing of burst page header"
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.It "st str" Ta Pa status Ta No "status file name"
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.It "tf str" Ta Dv NULL Ta No "troff data filter (cat phototypesetter)"
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.It "tr str" Ta Dv NULL Ta No "trailer string to print when queue empties"
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.It "vf str" Ta Dv NULL Ta No "raster image filter"
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.It "xc num 0 if lp is a tty, clear local mode bits"
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.Pq Xr tty 4
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.It "xs num 0 like `xc' but set bits"
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.El
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.Pp
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If the local line printer driver supports indentation, the daemon
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must understand how to invoke it.
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.Sh FILTERS
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The
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.Xr lpd 8
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daemon creates a pipeline of
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.Em filters
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to process files for various printer types.
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The filters selected depend on the flags passed to
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.Xr lpr 1 .
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The pipeline set up is:
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.Bd -literal -offset indent
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p pr | if regular text + pr(1)
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none if regular text
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c cf cifplot
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d df DVI (tex)
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g gf plot(3)
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n nf ditroff
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f rf Fortran
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t tf troff
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v vf raster image
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.Ed
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.Pp
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The
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.Sy if
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filter is invoked with arguments:
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.Bd -filled -offset indent
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.Cm if
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.Op Fl c
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.Fl w Ns Ar width
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.Fl l Ns Ar length
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.Fl i Ns Ar indent
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.Fl n Ar login
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.Fl h Ar host acct-file
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.Ed
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.Pp
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The
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.Fl c
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flag is passed only if the
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.Fl l
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flag (pass control characters literally)
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is specified to
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.Xr lpr .
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The
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.Ar Width
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function
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and
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.Ar length
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specify the page width and length
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(from
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.Cm pw
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and
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.Cm pl
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respectively) in characters.
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The
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.Fl n
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and
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.Fl h
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parameters specify the login name and host name of the owner
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of the job respectively.
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The
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.Ar Acct-file
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function
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is passed from the
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.Cm af
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.Nm printcap
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entry.
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.Pp
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If no
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.Cm if
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is specified,
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.Cm of
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is used instead,
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with the distinction that
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.Cm of
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is opened only once,
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while
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.Cm if
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is opened for every individual job.
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Thus,
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.Cm if
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is better suited to performing accounting.
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The
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.Cm of
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is only given the
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.Ar width
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and
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.Ar length
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flags.
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.Pp
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All other filters are called as:
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.Bd -filled -offset indent
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.Nm filter
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.Fl x Ns Ar width
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.Fl y Ns Ar length
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.Fl n Ar login
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.Fl h Ar host acct-file
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.Ed
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.Pp
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where
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.Ar width
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and
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.Ar length
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are represented in pixels,
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specified by the
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.Cm px
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and
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.Cm py
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entries respectively.
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.Pp
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All filters take
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.Em stdin
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as the file,
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.Em stdout
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as the printer,
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may log either to
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.Em stderr
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or using
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.Xr syslog 3 ,
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and must not ignore
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.Dv SIGINT .
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.Sh LOGGING
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Error messages generated by the line printer programs themselves
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(that is, the
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.Xr lp Ns *
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programs)
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are logged by
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.Xr syslog 3
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using the
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.Dv LPR
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facility.
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Messages printed on
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.Em stderr
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of one of the filters
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are sent to the corresponding
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.Cm lf
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file.
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The filters may, of course, use
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.Xr syslog
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themselves.
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.Pp
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Error messages sent to the console have a carriage return and a line
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feed appended to them, rather than just a line feed.
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.Sh SEE ALSO
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.Xr termcap 5 ,
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.Xr lpc 8 ,
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.Xr lpd 8 ,
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.Xr pac 8 ,
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.Xr lpr 1 ,
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.Xr lpq 1 ,
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.Xr lprm 1
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.Rs
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.%T "4.3 BSD Line Printer Spooler Manual"
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.Re
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.Sh HISTORY
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The
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.Nm
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file format appeared in
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.Bx 4.2 ..
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