User Commands dpost(1)
NAME
dpost - troff postprocessor for PostScript printers
SYNOPSIS
dpost [-c num] [-e num] [-m num] [-n num] [-o list]
[-w num] [-x num] [-y num] [-F dir] [-H dir]
[-L file] [-O] [-T name] [file]...
/usr/lib/lp/postscript/dpost
DESCRIPTION
dpost translates files created by troff(1) into PostScript
and writes the results on the standard output. If no files
are specified, or if - is one of the input files, the stan-
dard input is read.
The files should be prepared by troff. The default font
files in /usr/lib/font/devpost produce the best and most
efficient output. They assume a resolution of 720 dpi, and
can be used to format files by adding the -Tpost option to
the troff call. Older versions of the eqn and pic preproces-
sors need to know the resolution that troff will be using to
format the files. If those are the versions installed on
your system, use the -r720 option with eqn and -T720 with
pic.
dpost makes no assumptions about resolutions. The first x
res command sets the resolution used to translate the input
files, the DESC.out file, usually
/usr/lib/font/devpost/DESC.out, defines the resolution used
in the binary font files, and the PostScript prologue is
responsible for setting up an appropriate user coordinate
system.
OPTIONS
-c num Print num copies of each page. By default only
one copy is printed.
-e num Sets the text encoding level to num. The recog-
nized choices are 0, 1, and 2. The size of the
output file and print time should decrease as num
increases. Level 2 encoding will typically be
about 20 percent faster than level 0, which is
the default and produces output essentially
identical to previous versions of dpost.
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User Commands dpost(1)
-m num Magnify each logical page by the factor num.
Pages are scaled uniformly about the origin,
which is located near the upper left corner of
each page. The default magnification is 1.0.
-n num Print num logical pages on each piece of paper,
where num can be any positive integer. By
default, num is set to 1.
-o list Print those pages for which numbers are given in
the comma-separated list. The list contains sin-
gle numbers N and ranges N1-N2. A missing N1
means the lowest numbered page, a missing N2
means the highest. The page range is an expres-
sion of logical pages rather than physical sheets
of paper. For example, if you are printing two
logical pages to a sheet, and you specified a
range of 4, then two sheets of paper would print,
containing four page layouts. If you specified a
page range of 3-4, when requesting two logical
pages to a sheet; then only page 3 and page 4
layouts would print, and they would appear on one
physical sheet of paper.
-p mode Print files in either portrait or landscape mode.
Only the first character of mode is significant.
The default mode is portrait.
-w num Set the line width used to implement troff graph-
ics commands to num points, where a point is
approximately 1/72 of an inch. By default, num is
set to 0.3 points.
-x num Translate the origin num inches along the posi-
tive x axis. The default coordinate system has
the origin fixed near the upper left corner of
the page, with positive x to the right and posi-
tive y down the page. Positive num moves every-
thing right. The default offset is 0 inches.
-y num Translate the origin num inches along the posi-
tive y axis. Positive num moves text up the page.
The default offset is 0.
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User Commands dpost(1)
-F dir Use dir as the font directory. The default dir is
/usr/lib/font, and dpost reads binary font files
from directory /usr/lib/font/devpost.
-H dir Use dir as the host resident font directory.
Files in this directory should be complete
PostScript font descriptions, and must be
assigned a name that corresponds to the appropri-
ate two-character troff font name. Each font file
is copied to the output file only when needed and
at most once during each job. There is no default
directory.
-L file Use file as the PostScript prologue which, by
default, is /usr/lib/lp/postscript/dpost.ps.
-O Disables PostScript picture inclusion. A recom-
mended option when dpost is run by a spooler in a
networked environment.
-T name Use font files for device name as the best
description of available PostScript fonts. By
default, name is set to post and dpost reads
binary files from /usr/lib/font/devpost.
EXAMPLES
Example 1 Examples of the dpost command.
If the old versions of eqn and pic are installed on your
system, you can obtain the best possible looking output by
issuing a command line such as the following:
example% pic -T720 file tbl eqn -r720 troff -mm -Tpost dpost
Otherwise,
example% pic file tbl eqn troff -mm -Tpost dpost
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User Commands dpost(1)
should give the best results.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
non-zero An error occurred.
FILES
/usr/lib/font/devpost/*.out
/usr/lib/font/devpost/charlib/*
/usr/lib/lp/postscript/color.ps
/usr/lib/lp/postscript/draw.ps
/usr/lib/lp/postscript/forms.ps
/usr/lib/lp/postscript/ps.requests
/usr/lib/macros/pictures
/usr/lib/macros/color
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User Commands dpost(1)
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWpsf
SEE ALSO
download(1), postdaisy(1), postdmd(1), postio(1), postmd(1),
postprint(1), postreverse(1), posttek(1), troff(1), attri-
butes(5)
NOTES
Output files often do not conform to Adobe's file structur-
ing conventions. Piping the output of dpost through pos-
treverse(1) should produce a minimally conforming PostScript
file.
Although dpost can handle files formatted for any device,
emulation is expensive and can easily double the print time
and the size of the output file. No attempt has been made to
implement the character sets or fonts available on all dev-
ices supported by troff. Missing characters will be replaced
by white space, and unrecognized fonts will usually default
to one of the Times fonts (that is, R, I, B, or BI).
An x res command must precede the first x init command, and
all the input files should have been prepared for the same
output device.
Use of the -T option is not encouraged. Its only purpose is
to enable the use of other PostScript font and device
description files, that perhaps use different resolutions,
character sets, or fonts.
Although level 0 encoding is the only scheme that has been
thoroughly tested, level 2 is fast and may be worth a try.
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