Duplex Printing from the Command Line to an HP LaserJet Printer

My department has several HP LaserJet printers available to access within the department via LPR and SMB. However, if you are working from a personal laptop connected to the university wireless, those servers will not be available to you. Instead, you must print by piping your documents through SSH to a department server that does have access.

Unfortunately, doing duplex printing (i.e., two-sided printing) to an HP LaserJet printer from the command line is not trivial. So, using the GSview documentation as a guide, I put together a small bash script (available for download as hplj_duplex_print) that does the trick.

#!/bin/bash

declare -a input_file
if test $# -eq 0; then
    input_file=("-")
else
    input_file=("$@")
fi

( echo -e "\e%-12345X@PJL JOB"
  echo "@PJL ENTER LANGUAGE = POSTSCRIPT"
  echo "<< /Duplex true /Tumble false >> setpagedevice"
  gs -sDEVICE=psmono -sPAPERSIZE=letter -q -sOutputFile=- \
    -dNOPAUSE -dBATCH "${input_file[@]}"
  echo -e "\e%-12345X@PJL EOJ"
  echo -e "\e%12345X"
  ) | lp -d your_HP_printer_spool_name

You should replace the your_HP_printer_spool_name with your printer's spool name. You might want to tweak some of the options (details below), but the general structure will remain the same. The opening and closing escape sequences communicate to the HP LaserJet printer that a PostScript file is coming. Then the setpagedevice PostScript directive instructs the printer to use its duplex module.

Regarding tweaking:

• Again, make sure to change your_HP_printer_spool_name to your spool name. You may also want to change lp to lpr, but you will likely have to change -d to -P then.
• You may want to change the gs (GhostScript) options to suit your purposes. For example, you can change the psmono device to one of the other GhostScript devices like psgray or psrgb.
• The Tumble switch determines whether to do short-edge (true) or long-edge (false) duplex printing, and so this script defaults to the latter case. If you prefer vertical flipping, change the /Tumble false to /Tumble true. You might also make this a configurable command-line switch on the script.

Bounding Boxes and EPS to PDF Conversion (in LaTeX)

Another development: More bounding box related issues are discussed in this CTT thread. It turns out that dvips -E basically guesses RANDOMLY at what the bounding box should be, and so its answers can be inconsistent. GhostScript (gs) has a bbox driver that circumscribes your EPS with a rectangle and uses the rectangular dimensions as the bounding box. The epstool command can use this GhostScript calculation to update your EPS. So you can imagine doing things like...

latex file.tex
dvips -E file.tex -o tmp.eps
epstool --bbox --copy --ouput file.eps tmp.eps
epstopdf file.eps

The epspdf script has similar functionality (when you are converting from EPS to PDF) and will be included in TeXLive 2008.

Related post: LaTeX generated figures: Using preview instead of pst-eps

Follow-up: See another interesting option (pst-pdf) in this follow-up.

Update: Another interesting option is purifyeps, which requires pstoedit and Perl. See below.

None of the following is too special. This is all well-known stuff. However, it's not the easiest to find with a Google search, so I'm going to post it here.

Pretty often, I have to generate an EPS file with MATLAB. That EPS figure will go into a LaTeX document. To generate a PDF document from my LaTeX source, I will probably use PDFLaTeX/PDFTeX. However, that means I need to convert that MATLAB EPS figure to PDF. Most EPS-to-PDF distillers I use will mess up the bounding box information and the result of the conversion will be a FULL PAGE PDF rather than the nice tiny EPS figure.

Keep this scenario in mind and consider these notes:

• ps2pdf (program)
• epstopdf (program)
• epstopdf (LaTeX package)
• purifyeps (program)
• pstoedit (program)

(*) ps2pdf command: To convert EPS to PDF and maintain the proper bounding box, try including the "EPSCrop" GhostScript (GS) option:

ps2pdf -dEPSCrop blah.eps blah.pdf

Without the -dEPSCrop option, I get the full-page PDF from a MATLAB EPS. However, with the -dEPSCrop option, things work fine.

(*) epstopdf command: ALTERNATIVELY, try this line instead:

epstopdf blah.eps

This works for me. If it doesn't, try this (on Windows with MiKTeX 2.6):

epstopdf --gsopt=-dEPSCrop blah.eps

That also works for me.

(*) epstopdf LaTeX package: You may be interested in the epstopdf package which comes with the oberdiek bundle. It should be included in your LaTeX distribution. If not, install the oberdiek bundle. You can find information (and download) about these here:

• oberdiek bundle
• epstopdf package
• epstopdf documentation (PDF)

From that last link, you'll find this epstopdf usage (this will work for the graphics package as well):

\usepackage[pdftex]{graphicx}
\usepackage{epstopdf}

Then you can include graphics two different ways:

% Way 1: Includes blah.eps. Will ALWAYS generate 
% blah.pdf regardless of whether it already exists.
\includegraphics{blah.eps}

% Way 2: Includes blah.eps. If blah.pdf DOES NOT EXIST,
% it will automatically be generated.
\includegraphics{blah}

There are configuration options too. Consider the following:

% The default eps to pdf rule
\DeclareGraphicsRule{.eps}{pdf}{.pdf}{`epstopdf #1}

% Alternative eps to pdf rule
\DeclareGraphicsRule{.eps}{pdf}{.pdf}
     {`ps2pdf -dEPSCrop #1}

% A rule for converting gif to png using ImageMagick
% NOTE: The placement of the % signs IS important
\DeclareGraphicsRule{.gif}{png}{.png}{%
     `convert #1 `basename #1 .gif`.png%
}

% The same gif-to-png rule for Windows
% (i.e., without basename support)
\makeatletter
\DeclareGraphicsRule{.gif}{png}{.png}{%
     `convert #1 \noexpand\Gin@base.png%
}
\makeatother

FINALLY, if you want to add .gif to the list of extensions that the package graphicx (or graphics package) searches if the file extension is not given in \includegraphics, you can either use the command \GraphicsExtensions OR doing something like:

\makeatletter
\g@addto@macro\Gin@extensions{,.gif}
\makeatother

Leaving the file extension off of the \includegraphics macro makes a lot of sense; however, remember that epstopdf will only be run the first time latex or pdflatex gets run. If you want it to convert all of your graphics every run, be sure to leave the extensions on.

(*) purifyeps command: There is also purifyeps, which requires pstoedit and Perl. Taken from purifyeps's CTAN page:

While pdfLaTeX has a number of nice features, its primary shortcoming relative to standard LaTeX+dvips is that it is unable to read ordinary Encapsulated PostScript (EPS) files, the most common graphics format in the LaTeX world. purifyeps converts EPS files into a "purified" form that can be read by *both* LaTeX+dvips and pdfLaTeX. The trick is that the standard LaTeX2e graphics packages can parse MetaPost-produced EPS directly. Hence, purifyeps need only convert an arbitrary EPS file into the same stylized format that MetaPost outputs.

I haven't actually played with this at all. I recommend reading purifyeps.pdf for more information about why you want a "purified" EPS rather than some other format. I assume that the bounding box problem shouldn't be an issue here, but I have no idea.

(*) pstoedit command:
MPS files can be used DIRECTLY by BOTH latex and pdflatex (pdflatex does MPS-to-PDF conversion on-the-fly). You can easily convert EPS files to MPS files yourself as long as you have psttoedit (download and install it from the pstoedit page). Take a look at section 5.4 (MetaPost) of epslatex.pdf for information on that. From the instructions there:

pstoedit -f mpost graphic.eps graphic.mp
mpost graphic.mp
rename graphic.1 graphic.mps

That is, run psttoedit to convert to MP and then use mpost to create the MPS from the MP. Simple, huh? Now, does it fix the bounding box problem? As with the last bullet, I have no idea. Maybe someday I'll try this.

Hopefully some of that will be useful to someone; it will at least be a good reference for me. :)