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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
recognized 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 pro-
duces output essentially identical to previ-
ous versions of dpost.
SunOS 5.10 Last change: 9 Sep 1996 1
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 single 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 expression 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 speci-
fied 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
graphics 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
positive x axis. The default coordinate sys-
tem has the origin fixed near the upper left
corner of the page, with positive x to the
right and positive y down the page. Positive
num moves everything right. The default
offset is 0 inches.
SunOS 5.10 Last change: 9 Sep 1996 2
User Commands dpost(1)
-y num Translate the origin num inches along the
positive y axis. Positive num moves text up
the page. The default offset is 0.
-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
appropriate 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
recommended 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:
SunOS 5.10 Last change: 9 Sep 1996 3
User Commands dpost(1)
example% pic -T720 file | tbl | eqn -r720 | troff -mm -Tpost | dpost
Otherwise,
example% pic file | tbl | eqn | troff -mm -Tpost | dpost
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
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
SunOS 5.10 Last change: 9 Sep 1996 4
User Commands dpost(1)
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE 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.
SunOS 5.10 Last change: 9 Sep 1996 5
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This page was generated on Wed Sep 12 11:24:35 GMT 2007
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