NetBSD/share/man/man5/printcap.5

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.\" $NetBSD: printcap.5,v 1.8 1998/04/29 11:33:57 fair Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" @(#)printcap.5 8.2 (Berkeley) 12/11/93
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.\"
.Dd December 11, 1993
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.Dt PRINTCAP 5
.Os BSD 4.2
.Sh NAME
.Nm printcap
.Nd printer capability data base
.Sh SYNOPSIS
.Nm printcap
.Sh DESCRIPTION
The
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.Nm
data base is a simplified version of the
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.Xr termcap 5
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data base used to describe line printers.
The spooling system accesses the
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.Nm printcap
file every time it is used, allowing dynamic
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addition and deletion of printers.
Each entry in the data base is used to describe one printer.
This data base may not be substituted for, as is possible for
.Xr termcap 5 ,
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because it may allow accounting to be bypassed.
.Pp
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The default printer is normally
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.Em lp ,
though the environment variable
.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 ,
to allow explicit naming of a destination printer.
.Pp
Refer to the
.%T "4.3 BSD Line Printer Spooler Manual"
for a complete discussion on how to setup the database for a given printer.
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.Sh CAPABILITIES
Refer to
.Xr termcap 5
for a description of the file layout.
.Bl -column Name Type "/var/spool/lpd"
.Sy Name Type Default Description
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.It "af str" Ta Dv NULL Ta No "name of accounting file"
.It "br num none if lp is a tty, set the baud rate"
.Pf ( Xr ioctl 2
call)
.It "cf str" Ta Dv NULL Ta No "cifplot data filter"
.It "df str" Ta Dv NULL Ta No "tex data filter"
.Pf ( Tn DVI
format)
.It "fc num 0 if lp is a tty, clear flag bits"
.Pq Pa sgtty.h
.It "ff str" Ta So Li \ef Sc Ta No "string to send for a form feed"
.It "fo bool false print a form feed when device is opened"
.It "fs num 0 like `fc' but set bits"
.It "gf str" Ta Dv NULL Ta No "graph data filter"
.Pf ( Xr plot 3
format
.It "hl bool false print the burst header page last"
.It "ic bool false driver supports (non standard) ioctl to indent printout"
.It "if str" Ta Dv NULL Ta No "name of text filter which does accounting"
.It "lf str" Ta Pa /dev/console Ta No "error logging file name"
.It "lo str" Ta Pa lock Ta No "name of lock file"
.It "lp str" Ta Pa /dev/lp Ta No "device name to open for output to local printer, or port@host for remote printer/printer on print server"
.It "ms str" Ta Dv NULL Ta No "list of terminal modes to set or clear"
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.It "mx num 1000 maximum file size (in"
.Dv BUFSIZ
blocks), zero = unlimited
.It "nd str" Ta Dv NULL Ta No "next directory for list of queues (unimplemented)"
.It "nf str" Ta Dv NULL Ta No "ditroff data filter (device independent troff)"
.It "of str" Ta Dv NULL Ta No "name of output filtering program"
.It "pc num 200 price per foot or page in hundredths of cents"
.It "pl num 66 page length (in lines)"
.It "pw num 132 page width (in characters)"
.It "px num 0 page width in pixels (horizontal)"
.It "py num 0 page length in pixels (vertical)"
.It "rf str" Ta Dv NULL Ta No "filter for printing"
.Tn FORTRAN
style text files
.It "rg str" Ta Dv NULL Ta No "restricted group. Only members of group allowed access"
.It "rm str" Ta Dv NULL Ta No "machine name for remote printer"
.It "rp str ``lp'' remote printer name argument"
.It "rs bool false restrict remote users to those with local accounts"
.It "rw bool false open the printer device for reading and writing"
.It "sb bool false short banner (one line only)"
.It "sc bool false suppress multiple copies"
.It "sd str" Ta Pa /var/spool/lpd Ta No "spool directory"
.It "sf bool false suppress form feeds"
.It "sh bool false suppress printing of burst page header"
.It "st str" Ta Pa status Ta No "status file name"
.It "tf str" Ta Dv NULL Ta No "troff data filter (cat phototypesetter)"
.It "tr str" Ta Dv NULL Ta No "trailer string to print when queue empties"
.It "vf str" Ta Dv NULL Ta No "raster image filter"
.It "xc num 0 if lp is a tty, clear local mode bits"
.Pq Xr tty 4
.It "xs num 0 like `xc' but set bits"
.El
.Pp
If the local line printer driver supports indentation, the daemon
must understand how to invoke it.
.Sh FILTERS
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If a printer is specified via
.Sy lp
(either local or remote),
the
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.Xr lpd 8
daemon creates a pipeline of
.Em filters
to process files for various printer types.
The pipeline is not set up for remote printers specified via
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.Sy rm
unless the local host is the same as the remote printer host
given.
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The filters selected depend on the flags passed to
.Xr lpr 1 .
The pipeline set up is:
.Bd -literal -offset indent
p pr | if regular text + pr(1)
none if regular text
c cf cifplot
d df DVI (tex)
g gf plot(3)
n nf ditroff
f rf Fortran
t tf troff
v vf raster image
.Ed
.Pp
The
.Sy if
filter is invoked with arguments:
.Bd -filled -offset indent
.Cm if
.Op Fl c
.Fl w Ns Ar width
.Fl l Ns Ar length
.Fl i Ns Ar indent
.Fl n Ar login
.Fl h Ar host acct-file
.Ed
.Pp
The
.Fl c
flag is passed only if the
.Fl l
flag (pass control characters literally)
is specified to
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.Xr lpr 1 .
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The
.Ar Width
function
and
.Ar length
specify the page width and length
(from
.Cm pw
and
.Cm pl
respectively) in characters.
The
.Fl n
and
.Fl h
parameters specify the login name and host name of the owner
of the job respectively.
The
.Ar Acct-file
function
is passed from the
.Cm af
.Nm printcap
entry.
.Pp
If no
.Cm if
is specified,
.Cm of
is used instead,
with the distinction that
.Cm of
is opened only once,
while
.Cm if
is opened for every individual job.
Thus,
.Cm if
is better suited to performing accounting.
The
.Cm of
is only given the
.Ar width
and
.Ar length
flags.
.Pp
All other filters are called as:
.Bd -filled -offset indent
.Nm filter
.Fl x Ns Ar width
.Fl y Ns Ar length
.Fl n Ar login
.Fl h Ar host acct-file
.Ed
.Pp
where
.Ar width
and
.Ar length
are represented in pixels,
specified by the
.Cm px
and
.Cm py
entries respectively.
.Pp
All filters take
.Em stdin
as the file,
.Em stdout
as the printer,
may log either to
.Em stderr
or using
.Xr syslog 3 ,
and must not ignore
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.Dv SIGINT .
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.Sh LOGGING
Error messages generated by the line printer programs themselves
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(that is, the lp* programs) are logged by
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.Xr syslog 3
using the
.Dv LPR
facility.
Messages printed on
.Em stderr
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of one of the filters are sent to the corresponding
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.Cm lf
file.
The filters may, of course, use
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.Xr syslog 3
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themselves.
.Pp
Error messages sent to the console have a carriage return and a line
feed appended to them, rather than just a line feed.
.Sh SEE ALSO
.Xr termcap 5 ,
.Xr lpc 8 ,
.Xr lpd 8 ,
.Xr pac 8 ,
.Xr lpr 1 ,
.Xr lpq 1 ,
.Xr lprm 1
.Rs
.%T "4.3 BSD Line Printer Spooler Manual"
.Re
.Sh HISTORY
The
.Nm
file format appeared in
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.Bx 4.2 .