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-  
-Part of CategoryPrinting  
-----  
-  
-The Linux Printing Usage HOWTO  
-  
-  
-  
-----  
-  
-!!!The Linux Printing Usage HOWTO  
-  
-!!by Mark Komarinski <markk@auratek.com>v1.2.2, 6 February 1998  
-  
-  
-  
-  
-!!1. Introduction  
-  
-  
-*1.1 Linux Printing HOWTO History  
-  
-*1.2 Version History  
-  
-*1.3 Copyrights and Trademarks  
-  
-*1.4 Downloading the Linux Printing HOWTOs  
-  
-*1.5 Feedback  
-  
-*1.6 Acknowledgments  
-  
-  
-  
-  
-  
-!!2. Printing Under Linux  
-  
-  
-*2.1 History of Linux Printing  
-  
-*2.2 Printing a File Using ''lpr''  
-  
-*2.3 Viewing the Print Queue with ''lpq''  
-  
-*2.4 Canceling a Print Job Using ''lprm''  
-  
-*2.5 Controlling the lpd program with ''lpc''  
-  
-*2.6 The !RedHat printtool  
-  
-  
-  
-  
-  
-!!3. Printing files  
-  
-  
-*3.1 Printing graphics files  
-  
-*3.2 Printing !PostScript files  
-  
-*3.3 Printing PDF files  
-  
-*3.4 Printing TeX files  
-  
-*3.5 Printing troff formatted files  
-  
-*3.6 Printing man pages  
-  
-  
-  
-  
-  
-!!4. Miscellaneous Items  
-  
-  
-*4.1 Formatting Before Printing  
-  
-*4.2 The PRINTER Environment Variables  
-  
-  
-  
-  
-  
-!!5. Answers to Frequently Asked Questions  
-  
-  
-  
-  
-!!6. Troubleshooting  
-  
-  
-  
-  
-!!7. References  
-----  
-  
-!!1. Introduction  
-  
-  
-  
-  
-  
-This document describes how to use the line printer spooling system provided  
-with the Linux operating system. This HOWTO is the supplementary document  
-to the Linux Printing Setup HOWTO, which discusses the installation and  
-setup of the Linux printing system. The material presented in this HOWTO  
-should be equally relevent for all flavors of the BSD operating system in  
-addition to the Linux operating system.  
-  
-  
-  
-  
-!!1.1 Linux Printing HOWTO History  
-  
-  
-  
-Note from Mark Komarinski <markk@auratek.com>:  
-  
-  
-I'd like to thank Matt Foster for doing a lot of work in the re-write  
-of this HOWTO. I'm keeping his style, and adding when necessary to keep  
-everything updated.  
-  
-  
-Note from Matt Foster <mwf@engr.uark.edu>:  
-  
-  
-This version of the Linux Printing HOWTO is a complete rewrite of the one  
-originally written by Grant Taylor <grant@god.tufts.edu> and Brian  
-!McCauley <B.A.!McCauley@bham.ac.uk>. I have tried to keep with the  
-coverage of material presented by Grant and Brian's HOWTO, but I have  
-drastically modified the style of presentation and the depth of material  
-covered. I feel that this makes the HOWTO more complete and easier to  
-read. I can only hope that you agree.  
-  
-  
-  
-  
-!!1.2 Version History  
-  
-  
-  
-v1.2.2  
-  
-  
-*Re-indexed, other changes to fit in the new !RedHat docs. Thanks Ed!  
-*  
-  
-v1.2.1  
-  
-  
-*updates, some changes for Dr. Linux publication  
-*  
-  
-v1.2  
-  
-  
-*Windows Printers  
-*  
-  
-*Changing max size of print files  
-*  
-  
-v1.11  
-  
-  
-*new maintainter!  
-*  
-  
-*Added lpc info  
-*  
-  
-*Added some info for troubleshooting  
-*  
-  
-*A start on printing graphics files!  
-*  
-  
-  
-  
-v1.1  
-  
-  
-*revised some of the wording  
-*  
-  
-*developed section on !PostScript printing  
-*  
-  
-*attempted to clarify some of the examples 8-)  
-*  
-  
-*fleshed the discussion of the basic Linux printing utilities  
-*  
-  
-  
-  
-v1.  
-  
-  
-*initial public release of the Printing Usage HOWTO  
-*  
-  
-  
-  
-  
-  
-!!1.3 Copyrights and Trademarks  
-  
-  
-  
-Some names mentioned in this HOWTO are claimed as copyrights and/or  
-trademarks of certain persons and/or companies. These names appear  
-in full or initial caps in this HOWTO.  
-  
-  
-''(c) 1995 Matt Foster (mwf@engr.uark.edu)''  
-''(c) 1996-1997 Mark F. Komarinski (markk@auratek.com)''  
-  
-  
-All translations, derivative works, or aggregate works incorporating  
-any Linux HOWTO documents must be covered under this copyright notice.  
-  
-  
-That is, you may not produce a derivative work from a HOWTO and impose  
-additional restrictions on its distribution. Exceptions to these rules  
-may be granted under certain conditions; please contact the Linux HOWTO  
-coordinator at the address given below.  
-  
-  
-In short, we wish to promote dissemination of this information through as  
-many channels as possible. However, we do wish to retain copyright on the  
-HOWTO documents, and would like to be notified of any plans to redistribute  
-the HOWTOs.  
-  
-  
-  
-  
-  
-If you have questions, please contact Tim Bynum, the Linux HOWTO  
-coordinator, at <linux-howto@sunsite.unc.edu>. You may finger this address  
-for phone number and additional contact information.  
-  
-  
-  
-  
-  
-  
-  
-!!1.4 Downloading the Linux Printing HOWTOs  
-  
-  
-  
-  
-  
-I recommend that if you want to print a copy of this HOWTO that you  
-download the !PostScript version. It is formatted in a fashion that is  
-aesthetically appealing and easier to read. You can get the !PostScript  
-version from one of the many Linux distribution sites (such as SunSITE  
-ftp://sunsite.unc.edu/pub/Linux/docs/HOWTO/).  
-  
-  
-  
-  
-!!1.5 Feedback  
-  
-  
-  
-Questions, comments, or corrections for this HOWTO may be directed to  
-<markk@auratek.com>.  
-  
-  
-  
-  
-!!1.6 Acknowledgments  
-  
-  
-  
-Thanks go out to all of the people who took the time to read the alpha  
-version of this HOWTO and respond with many helpful comments and  
-suggestions---some of you may see your comments reflected in the version.  
-  
-  
-I'd also like to thank Matt Foster who did the original re-write.  
-  
-  
-  
-----  
-  
-!!2. Printing Under Linux  
-  
-  
-This section discusses how to print files, examine the print queue, remove  
-jobs from the print queue, format files before printing them, and configure  
-your printing environment.  
-  
-  
-  
-  
-!!2.1 History of Linux Printing  
-  
-  
-  
-  
-  
-The Linux printing system---the ''lp'' system---is a port of the source  
-code written by the Regents of the University of California for the Berkeley  
-Software Distribution version of the UNIX operating system.  
-  
-  
-  
-  
-!!2.2 Printing a File Using ''lpr''  
-  
-  
-  
-  
-  
-  
-By far, the most simplistic way to print in the Linux operating system is  
-to send the file to be printed directly to the printing device. One way  
-to do this is to use the ''cat'' command. As the root user,  
-one could do something like  
-  
-  
-  
-  
-  
-# cat thesis.txt > /dev/lp  
-  
-  
-  
-  
-In this case, /dev/lp is a symbolic link to the actual printing  
-device---be it a dot-matrix, laser printer, typesetter, or plotter. (See  
-''ln''(1) for more information on symbolic links.)  
-  
-  
-For the purpose of security, only the root user and users in the  
-same group as the print daemon are able to write directly to the printer.  
-This is why commands such as ''lpr'', ''lprm'', and ''lpq''  
-have to be used to access the printer.  
-  
-  
-Because of this, users have to use ''lpr'' to print a file. The  
-''lpr'' command takes care of all the initial work needed to print  
-the file, and then it hands control over to another program, ''lpd'',  
-the line printing daemon. The line printing daemon then tells the printer  
-how to print the file.  
-  
-  
-When ''lpr'' is executed, it first copies the specified file to a  
-certain directory (the spool directory) where the file remains until  
-''lpd'' prints it. Once ''lpd'' is told that there is a file to  
-print, it will spawn a copy of itself (what we programmers call forking).  
-This copy will print our file while the original copy waits for more  
-requests. This allows for multiple jobs to be queued at once.  
-  
-  
-The syntax of ''lpr''(1) is a very familiar one,  
-  
-  
-  
-  
-  
-$ lpr [[ options ] [[ filename ... ]  
-  
-  
-  
-  
-If filename is not specified, ''lpr'' expects input to come  
-from standard input (usually the keyboard, or another program's output).  
-This enables the user to redirect a command's output to the print spooler.  
-As such,  
-  
-  
-  
-  
-  
-$ cat thesis.txt | lpr  
-  
-  
-  
-  
-or,  
-  
-  
-  
-  
-  
-$ pr -l60 thesis.txt | lpr  
-  
-  
-  
-  
-The ''lpr'' command accepts several command-line arguments that allow a  
-user to control how it works. Some of the most widely used arguments are:  
--__P__printer specifies the printer to use, -__h__ suppresses printing of  
-the burst page, -__s__ creates a symbolic link instead of copying the file  
-to the spool directory (useful for large files), and -__#__num  
-specifies the number of copies to print. An example interaction with  
-''lpr'' might be something like  
-  
-  
-  
-  
-  
-$ lpr -#2 -sP dj thesis.txt  
-  
-  
-  
-  
-This command will create a symbolic link to the file thesis.txt in  
-the spool directory for the printer named ''dj'', where it would be  
-processed by ''lpd''. It would then print a second copy of  
-thesis.txt.  
-  
-  
-For a listing of all the options that ''lpr'' will recognize, see  
-''lpr''(1).  
-  
-  
-  
-  
-!!2.3 Viewing the Print Queue with ''lpq''  
-  
-  
-  
-  
-  
-  
-To view the contents of the print queue, use the ''lpq'' command.  
-Issued without arguments, it returns the contents of the default printer's  
-queue.  
-  
-  
-The returned output of ''lpq'' can be useful for many purposes.  
-  
-  
-  
-  
-  
-$ lpq  
-lp is ready and printing  
-Rank Owner Job Files Total Size  
-active mwf 31 thesis.txt 682048 bytes  
-  
-  
-  
-  
-  
-  
-!!2.4 Canceling a Print Job Using ''lprm''  
-  
-  
-  
-  
-  
-  
-Another useful feature of any printing system is the ability to cancel a job  
-that has been previously queued. To do this, use ''lprm''.  
-  
-  
-  
-  
-  
-$ lprm -  
-  
-  
-  
-  
-The above command cancels all of the print jobs that are owned by the user  
-who issued the command. A single print job can be canceled by first getting  
-the job number as reported by ''lpq'' and then giving that number to  
-''lprm''. For example,  
-  
-  
-  
-  
-  
-$ lprm 31  
-  
-  
-  
-  
-would cancel job 31 (thesis.txt) on the default printer.  
-  
-  
-  
-  
-!!2.5 Controlling the lpd program with ''lpc''  
-  
-  
-  
-  
-  
-  
-The ''lpc''(8) program is used to control the printers that lpd serves.  
-you can enable or disable a printer or its queues, rearrange entries within  
-a queue, and get a status report on the printers and their queues.  
-Lpc is mostly used in a setup where there are multiple printers hanging off  
-one machine.  
-  
-  
-  
-  
-  
-$ lpc  
-  
-  
-  
-  
-The above will start the lpc program. By default, this enters you into  
-an interactive mode, and you can begin issuing commands. The other option  
-is to issue an lpc command on the command line.  
-  
-  
-  
-  
-  
-$ lpc status all  
-  
-  
-  
-  
-A list of the available commands are in the ''lpd'' man page, but here  
-are a few of the major commands you'll want to know about. Any commands  
-marked with ''option'' can either be a printer name (lp, print, etc) or  
-the keyword all, which means all printers.  
-  
-  
-  
-  
-  
-* disable ''option'' - prevents any new printer job from being entered  
-*  
-  
-* down ''option'' - disables all printing on the printer  
-*  
-  
-* enable ''option'' - allow new jobs to enter the print queue  
-*  
-  
-* quit (or exit) - leave lpc  
-*  
-  
-* restart ''option'' - restarts lpd for that printer  
-*  
-  
-* status ''option'' - print status of printer  
-*  
-  
-* up ''option'' - enable everything and start a new lpd  
-*  
-  
-  
-  
-  
-  
-!!2.6 The !RedHat printtool  
-  
-  
-  
-  
-  
-  
-  
-Just a quick note here on !RedHat's amazing printtool program. It seems  
-to do everything that a magicfilter would do. !RedHat already installs many  
-of the programs to do the filtering. Here's how I have my printer set up  
-under RH 4.0 with an HP LJ 4L connected to my parallel port (should be  
-the same for other versions of RH as well).  
-  
-  
-*Become root and fire up printtool (if you su'ed, you remembered to  
-SETENV DISPLAY :.0 and xhost +, right?)  
-*  
-  
-*Click "Add", and hit "OK" for a local printer.  
-*  
-  
-*Fill in the printer device (/dev/lp1 for me)  
-*  
-  
-*Fill in the input filter - Select a printer type, resolution, and paper  
-size (ljet4, 300x300, and letter)  
-*  
-  
-*Hit "OK" all the way back, and restart the lpd.  
-*  
-  
-Just like rolling an /etc/printcap file by hand, you can have multiple  
-printer definitions for each physical printer. One for different paper  
-sizes, resolutions, etc.  
-  
-  
-  
-----  
-  
-!!3. Printing files  
-  
-  
-  
-  
-This section covers printing the kinda of files that you'll run across in a  
-Linux setup.  
-  
-  
-  
-  
-!!3.1 Printing graphics files  
-  
-  
-  
-  
-  
-Printing graphics files through a printer usually depends on the kind of  
-graphics you're converting, and the kind of printer you want to send to. Dot  
-matrix is usually out of the question due to differences in the way  
-dot-matrix handles graphics. Your best bet in this situation is to see if  
-your printer is compatable with an Epson or an IBM !ProPrinter, then convert  
-the graphics file to !PostScript, then use Ghostscript (see next section) to  
-print the graphics.  
-  
-  
-If you have a laser printer, things are a bit easier since many are  
-compatable with PCL. This now gives you a few options. Some programs may  
-output directly in PCL. If not, programs like ''NetPBM'' can convert  
-into PCL. Last option is to use ghostscript (see next section).  
-  
-  
-Your absolutely best option is to install packages like NetPBM and Ghostscript  
-then installing a magic filter to process the graphics files automagically.  
-  
-  
-  
-  
-!!3.2 Printing !PostScript files  
-  
-  
-  
-  
-  
-  
-Printing !PostScript files on a printer that has a !PostScript interpreter  
-is simple; just use ''lpr'', and the printer will take care of all  
-of the details for you. For those of us that don't have printers with  
-!PostScript capabilities, we have to resort to other means. Luckily, there  
-are programs available that can make sense of !PostScript, and translate  
-it into a language that most printers will understand. Probably the most  
-well known of these programs is Ghostscript.  
-  
-  
-Ghostscript's responsibility is to convert all of the descriptions in a  
-!PostScript file to commands that the printer will understand. To print  
-a !PostScript file using Ghostscript, you might do something like  
-  
-  
-  
-  
-  
-$ gs -dSAFER -dNOPAUSE -sDEVICE=deskjet -sOutputFile=\|lpr thesis.ps  
-  
-  
-  
-  
-Notice in the above example that we are actually piping the output of  
-Ghostscript to the ''lpr'' command by using the -__sOutputFile__  
-option.  
-  
-  
-Ghostview is an interface to Ghostscript for the X Window System. It allows  
-you to preview a !PostScript file before you print it. Ghostview and  
-Ghostscript can both be swiped from  
-ftp://prep.ai.mit.edu/pub/gnu/.  
-  
-  
-  
-  
-!!3.3 Printing PDF files  
-  
-  
-  
-  
-  
-  
-  
-  
-Adobe has released an Acrobat reader for Linux, and it's available on the  
-Adobe home page  
-http://www.adobe.com. Its predecessor, xpdf, is  
-also available. Both should print to a postscript device.  
-  
-  
-  
-  
-!!3.4 Printing TeX files  
-  
-  
-  
-  
-  
-  
-One of the easiest ways to print TeX files is to convert them to !PostScript  
-and then print them using Ghostscript. To do this, you first need to  
-convert them from TeX to a format known as DVI (which stands for  
-device-independent). You can do this with the ''tex''(1) command. Then  
-you need to convert the DVI file to a !PostScript file using ''dvips''.  
-All of this would look like the following when typed in.  
-  
-  
-  
-  
-  
-$ tex thesis.tex  
-$ dvips thesis.dvi  
-  
-  
-  
-  
-Now you are ready to print the resulting !PostScript file as described above.  
-  
-  
-  
-  
-!!3.5 Printing troff formatted files  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-$ groff -Tascii thesis.tr | lpr  
-  
-  
-  
-  
-or, if you prefer,  
-  
-  
-  
-  
-  
-$ groff thesis.tr > thesis.ps  
-  
-  
-  
-  
-and then print the !PostScript file as described above.  
-  
-  
-  
-  
-!!3.6 Printing man pages  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-  
-$ man man | col -b | lpr  
-  
-  
-  
-  
-The man pages contain pre-formatted troff data, so we have to strip  
-out any highlighting, underlines, etc. The 'col' program does this just  
-nicely, and since we're piping data, the man program won`t use  
-more.  
-----  
-  
-!!4. Miscellaneous Items  
-  
-  
-This covers topics not in any of the others.  
-  
-  
-  
-  
-!!4.1 Formatting Before Printing  
-  
-  
-  
-  
-  
-Since most ASCII files are not formatted for printing, it is useful to  
-format them in some way before they are actually printed. This may include  
-putting a title and page number on each page, setting the margins, double  
-spacing, indenting, or printing a file in multiple columns. A common way to  
-do this is to use a print preprocessor such as ''pr''.  
-  
-  
-  
-  
-  
-$ pr +4 -d -h"Ph.D. Thesis, 2nd Draft" -l60 thesis.txt | lpr  
-  
-  
-  
-  
-In the above example, ''pr'' would take the file thesis.txt  
-and skip the first three pages (+4), set the page length to sixty lines  
-(-l60), double space the output (-d), and add the phrase "Ph.D. Thesis, 2nd  
-Draft" to the top of each page (-h). ''Lpr'' would then queue  
-''pr'''s output. See its on-line manual page for more information on  
-using ''pr''.  
-  
-  
-  
-  
-!!4.2 The PRINTER Environment Variables  
-  
-  
-  
-  
-  
-  
-All of the commands in the Linux printing system accept the -__P__ option.  
-This option allows the user to specify which printer to use for output. If  
-a user doesn't specify which printer to use, then the default printer will  
-be assumed as the output device.  
-  
-  
-Instead of having to specify a printer to use every time that you print, you  
-can set the PRINTER environment variable to the name of the printer that you  
-want to use. This is accomplished in different ways for each shell. For  
-''bash'' you can do this with  
-  
-  
-  
-  
-  
-$ PRINTER="printer_name"; export PRINTER  
-  
-  
-  
-  
-and ''csh'', you can do it with  
-  
-  
-  
-  
-  
-% setenv PRINTER "printer_name"  
-  
-  
-  
-  
-These commands can be placed in your login scripts (.profile for ''bash'',  
-or .cshrc for ''csh''), or issued on the command-line. (See  
-''bash''(1) and ''csh''(1) for more information on environment  
-variables.)  
-  
-  
-  
-  
-  
-  
-----  
-  
-!!5. Answers to Frequently Asked Questions  
-  
-  
-  
-  
-  
-Q1. How do I prevent the staircase effect?  
-  
-  
-  
-A1. The staircase effect is caused by the way some printers expect lines to  
-be terminated. Some printers want lines that end with a  
-carriage-return/line-feed sequence (DOS-style) instead of the line-feed  
-sequence used for UNIX-type systems. The easiest way to fix this is to see  
-if your printer can switch between the two styles somehow---either by  
-flipping a DIP switch, or by sending an escape sequence at the start of each  
-print job. To do the latter, you need to create a filter (see Q2).  
-  
-  
-A quick fix is to use a filter on the command-line. An example of this  
-might be  
-  
-  
-  
-  
-  
-$ cat thesis.txt | todos | lpr  
-  
-  
-  
-  
-  
-  
-  
-Q2. What is a filter?  
-  
-  
-  
-A2. A filter is a program that reads from standard input (''stdin''),  
-performs some action on this input, and writes to standard output  
-(''stdout''). Filters are used for a lot of things, including text  
-processing.  
-  
-  
-  
-  
-  
-Q3. What is a ''magic'' filter?  
-  
-  
-  
-A3. A magic filter is a filter that performs an action based on a file's  
-type. For example, if the file is a plain, text file, it would simply print  
-the file using the normal methods. If the file is a !PostScript file, or any  
-other format, it would print it using another method (ghostscript). Two  
-examples of this is magicfilter and APSfilter. One caveat of these filters  
-is that the appropriate programs have to be installed before you install  
-the filter.  
-  
-  
-The reason for this is that when the magicfilter gets installed, it queries  
-your system for specific programs (such as ghostscript - if it finds it, then  
-it knows it can handle !PostScript data), then builds itself based on what it  
-finds. To handle all the printer files, you should probably have at least  
-the following installed:  
-  
-  
-*!GhostScript  
-*  
-  
-*TeX  
-*  
-  
-*NetPBM  
-*  
-  
-*jpeg utilities  
-*  
-  
-*gzip  
-*  
-  
-  
-  
-  
-  
-  
-Q4. What about the Windows Printing System? Will Linux work with that?  
-  
-  
-  
-A4. Maybe. Printers that accept only the WPS commands will not  
-work with Linux. Printers that accept WPS and other commands  
-(such as the Canon BJC 610) will work, as long as they're set to  
-something other than WPS format. Other printers, such as some HP !DeskJet  
-820Cxi/Cse, will *not* work with Linux. That being said, Linux can act  
-as a print server (See Samba) for Win95 machines, since Win95 has drivers  
-for those printers.  
-  
-  
-  
-  
-  
-Q5. What kinda cheey system is this? I can't print more than 6 pages  
-or else I get a "file too large" error.  
-  
-  
-  
-A5. One of the options in the /etc/printcap file relates to the maximum  
-size of a print file. The default is 1000 disk blocks (about 500k?). For  
-!PostScript files and the like, this will give you maybe 6-8 pages with  
-graphics and all. Be sure to add the following line in the printer  
-definition:  
-  
-  
-mx=  
-  
-  
-The primary reason for this is to keep the spool partition from getting  
-filled. There is another way to do it, by making lpr create a soft  
-link from the spool directory to your print file. But you have to remember to  
-add the -s option to lpr every time.  
-  
-  
-  
-----  
-  
-!!6. Troubleshooting  
-  
-  
-  
-  
-This section covers some common things that can go wrong with your printing  
-system.  
-  
-  
-If your printer doesn't work:  
-  
-  
-*Do other print jobs work? (application problem?)  
-*  
-  
-*Is lpd running? (check it using lpc) (print controller?)  
-*  
-  
-*Can root send something directly to the printer? (print services?)  
-*  
-  
-*Can you print from DOS? (cable/printer problem?)  
-*  
-  
-Answering these questions can help find a solution.  
-  
-  
-Send other suggestions for this section to <markk@auratek.com>.  
-  
-  
-  
-----  
-  
-!!7. References  
-  
-  
-  
-  
-This is a section of references on the Linux printing system. I have  
-tried to keep the references section of this HOWTO as focused as  
-possible. If you feel that I have forgotten a significant reference  
-work, please do not hesitate to contact me.  
-  
-  
-Before you post your question to a USENET group, consider the following:  
-  
-  
-*Is the printer accepting jobs? (Use ''lpc''(8) to verify.)  
-*  
-  
-*Is the answer to your question covered in this HOWTO or Grant  
-Taylor's Printing HOWTO?  
-*  
-  
-  
-  
-If any of the above are true, you may want to think twice before you post  
-your question. And, when you do finally post to a newsgroup, try to include  
-pertinent information. Try not to just say something like, "I'm having  
-trouble with lpr, please help." These types of posts will most definitely be  
-ignored by many. Also try to include the kernel version that you're  
-running, how the error occured, and, if any, the specific error message that  
-the system returned.  
-  
-  
-  
-  
-; __On-Line Manual Pages__:  
-  
-  
-  
-  
-  
-*''cat''(1) concatenate and print files  
-*  
-  
-*''dvips''(1) convert a TeX DVI file to !PostScript  
-*  
-  
-*''ghostview''(1) view !PostScript documents using Ghostscript  
-*  
-  
-*''groff''(1) front-end for the groff document formatting system  
-*  
-  
-*''gs''(1) Ghostscript interpreter/viewer  
-*  
-  
-*''lpc''(8) line printer control program  
-*  
-  
-*''lpd''(8) line printer spooler daemon  
-*  
-  
-*''lpq''(1) spool queue examination program  
-*  
-  
-*''lpr''(1) off-line printer  
-*  
-  
-*''lprm''(1) remove jobs from the line printer spooling queue  
-*  
-  
-*''pr''(1) convert text files for printing  
-*  
-  
-*''tex''(1) text formatting and typesetting  
-*  
-  
-  
-  
-  
-; __USENET newsgroups__:  
-  
-  
-  
-  
-  
-*comp.os.linux.* a plethora of information on Linux  
-*  
-  
-*comp.unix .* discussions relating to the UNIX operating system  
-*  
-  
-  
-----  
+Describe [HowToPrintingUsageHOWTO ] here.