CSL: General

In this page:

• Printing System: CUPS (and LPRng)
• Printers and Command Basics
• Command Examples
  • Printing
  • Displaying queued print jobs
  • Cancelling a print job
• CUPS Options
• Conversions
• PDF's and Unusual Paper Sizes
• Saving Paper: Printing N-Up; Using Copiers

 

Printing System: CUPS (and LPRng)

For many years, the C.S. department used LPRng as the primary printing system; especially with the Solaris OS. Due to a reduction of support and development for LPRng, we have transitioned the printing system to CUPS (Common Unix Printing System).

CUPS provides partial support for the LPR command syntax style, thus providing two sets of commands; e.g., lp and lpr. We've removed most of the LPRng discussion from this document, but some remains as context for people who are more familiar with that system.

Please see the appropriate man pages for command details. For example, in a terminal window, you can type, “man lpstat” to view the manual page for the lpstat command.

 

Printers and Command Basics

In general, our printers are named for the room number (and building) where they are located; they are listed in the table below.

The lp and lpr commands are the most basic way of sending print jobs (files, documents, etc.) to a printer. In many instances, printing may be initiated directly from an application running on your workstation, with options selected via a dialog window. For Windows, more information is available in the Windows printing FAQ. For information about printing from the wireless network, please see the wireless printing instructions. When possible, please try to print in duplex mode (both sides of the sheet) to save paper - this is generally the default setting.

To remove a print job, use the cancel or lprm commands. To check on the status of a print queue, use the lpstat or lpq commands.

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Queue names*		Location	Use	Modes*	E-Mail**
color	pr108c	inside D108 LSRC	PUBLIC	sx,dx,raw	✔
eprint ***		at D101 (lobby) LSRC	PUBLIC		-
101 ***	pr101	at D101 (lobby) LSRC	PUBLIC	sx,dx,raw	-
108c	pr108c	inside D108 LSRC	PUBLIC	sx,dx,raw	✔
109	pr109	outside D109 LSRC	PUBLIC	sx,dx,raw	-
112	pr112a	inside D112 LSRC	PRIVATE	sx,dx,raw	-
128	pr128	outside D128 LSRC	PUBLIC	sx,dx,raw	-
129	pr129	D129 (hall copier) LSRC	PUBLIC	sx,dx,raw	✔
204	pr204a	inside D204 LSRC	PRIVATE	sx,dx,raw	-
214ac	pr214ac	inside D214A LSRC	PRIVATE	sx,dx,raw	-
211	pr211	outside D211 LSRC	PUBLIC	sx,dx,raw	-
230	pr230	outside D230 LSRC	PUBLIC	sx,dx,raw	-
231	pr167	D231 (hall copier) LSRC	PUBLIC	sx,dx,raw	✔
234	pr167	in D231 corridor, outside D234 LSRC	PUBLIC	sx,dx,raw	-
312	pr312	outside D312 LSRC	PUBLIC	sx,dx,raw	-
admin	pr312a	inside D312 LSRC	PRIVATE	sx,dx,raw	-
315a	pr315a	inside D315 LSRC	PRIVATE	sx,dx,raw	-
315c	pr315c	inside D315 LSRC	PRIVATE	sx,dx,raw	-
331	pr331	outside D331 LSRC	PUBLIC	sx,dx,raw	-
332	pr152	D332 (hall copier) LSRC	PUBLIC	sx,dx,raw	✔
020	pr020	inside N020 North	PUBLIC	sx,dx,raw	-
022	pr022	inside N022 North	PUBLIC	sx,dx,raw	-
141	robot-lab-printer	inside N141 North	PUBLIC	sx,dx,raw	-
224n	pr224n	inside N224 North	PUBLIC	sx,dx,raw	-
311n	pr311n	inside N311 North	PUBLIC	sx,dx,raw	-
311nc	pr311nc	inside N311 North	PUBLIC	sx,dx,raw	-
3245f	pr3245f	inside N3245 French	PUBLIC	sx,dx,raw	-

* NOTE: For CUPS-style commands, usually a -d (destination) option is used, e.g., “lp -dqueuename”; but sometimes it's -p, so please check documentation. For LPRng-style commands, printers can generally be selected via a -P option, e.g., “lpr -Pqueuename”.

The queue names listed above can be modified by appending modes to the end with a dash (see below). The available modes are:

• sx = simplex (single-sided)
• dx = duplex (double-sided), the default
• raw = raw, do not force paper tray, size, etc

In most cases, the bare queue name (no -mode appended) is equivalent to -dx. You can also customize your own queue names using the lpoptions command.

On the HP4730MFP and HP4650DTN (color printers), -ut (uppertray) and -tr (transparency) are equivalent.

 

On the HP4050TN, -ut (uppertray) and -lh (letterhead) are equivalent.

***NOTE: The color printers require special transparencies, which can be obtained from the Lab Secretary in D128. Do not use unapproved transparencies or paper in these printers! Other non-approved transparencies will melt in the printer and cause damage; i.e., they will not work!

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**NOTE: These printers / copiers can scan and send the document as e-mail.

***NOTE: The eprint printer is primarily managed by OIT. It can be accessed via the ePrint system, and is one of a pool of campus printers that can print any ePrint job using DukeCard authentication. You can also print to this printer directly via the local 101 queue.

lp -d101 myfile lp -Unetid -deprint myfile

In the first example above, the print job is sent directly to the printer via the local queue. In the second example, the job is sent to an OIT ePrint server, and can be retrieved from any ePrint printer on campus. Note that for eprint, if your CS username is different than your Duke NetID, then you must include the -U{NetID} option; it might not be possible to do this through most GUI print dialogs!

 

Command Examples

Printing:

lp -d331-sx myfile

will cause your job to be printed single-sided on printer 331.

lpr -P128-dx yourfile

will cause your job to be printed double-sided on printer 128.

lpr -P020-raw -o 'inputslot=tray1' herfile

will result in a manual feed request on printer 020.

lp -d108c-raw -o 'duplex=none inputslot=tray1 hpstapleroptions=1angled' somefile

will result in a single-sided, manual-feed, stapled request on color printer 108c.

It is a good idea to use environment variables to hold the queue name of the printer that you use the most. That way, you do not have to type the -d or -P option when using that printer. For example, put this line in your .my-cshrc file:

setenv LPDEST 022-dx # for CUPS setenv PRINTER 022-dx # for LPRng

Alternatively, you can use lpoptions -d queuename to designate your default printer.

 

Displaying queued print jobs:

lpstat -o

will show all jobs queued on all printers

lpstat -o 022-dx

will show all jobs in the 022-dx queue

lpq

will show jobs in your default queue

lpq -a

will show all jobs in all queues

lpq -P331-raw

will show all jobs in the 331-raw queue

 

Cancelling a print job:

A CUPS print job has a job ID that is either a number or 'queue-number'. You will need to run lpstat or lpq to list queued jobs, then use one of cancel or lprm to cancel one or more print jobs.

cancel 128-dx

will cancel your top job in the 128-dx queue

cancel 128-dx-12345

cancel 12345

these will cancel the print job with job ID 12345

lprm

will remove your top job in your default queue

lprm 12345

will remove your job with job ID 12345

lprm -P020

will remove your top job in the 020 queue

 

CUPS Options

CUPS provides two ways to select print options, i.e., when using commands and not an applicaiton dialog window. There's command-line selection via lp's and lpr's “-o” option. There's an example above in the Printers and Command Basics section.

Then there's setting options and creating instances with the lpoptions command. Let's say that your default printer is 109, and you always like certain features (options) set. You could set the defaults with something like “lpoptions -p 109 -o 'opt1=val1 opt2=val2 ...'”. Then, when you print to “lp -d 109”, your default options will automatically be used. If you also want a printer queue that has an alternative option, say you want simplex instead of duplex, you could create an instance with “lpoptions -p 109/sx -o 'duplex=none opt1=val1 opt2=val2 ...'”. You could then select this queue using “lp -d 109/sx”.

To get more information about the options available on a particular printer, use “lpoptions -l -d printername”, or contact the Lab Staff.

LPRng “Z” Options

Additional options are available via lpr's -Z flag. As with printer “modes”, availability of these options depends on a particular printer's capabilities.

Some of the options that are available on the HP4050N printers are:

300	300 dpi resolution, draft quality
600	600 dpi resolution (default)
1200	1200 dpi resolution, very high resolution
fastres	(1200 dpi only) full speed printing
fastresoff	(1200 dpi only, PRORES) highest resolution, slower printing
economode	uses less toner (default)
economodeoff	uses more toner
simplex	single-sided (default)
duplex	double-sided
portrait	vertical orientation (default)
landscape	horizontal orientation

Additional options on appropriate printers:

letterhead	letterhead tray
transparency	transparency tray
manual	manual feed tray
staple	staple sheets

Multiple Z options can be selected by separating them with commas, for example:

lpr -Z300,landscape,duplex somefile

It is impractical to try to list all options for all printers here. Using an option not applicable to a printer simply causes that option to be ignored, so it doesn't hurt to experiment. For information on particular printers, try checking the web site for that printer manufacturer, or contact the Lab Staff.

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Conversions

Our printing system can handle quite a few types of data conversions automatically. Give it a try. If it can't print your document, you will usually get an error message. For example:

lp -d 312-dx FinalReport.pdf.gz

NOTE: Currently, Microsoft formats (e.g., Word documents) are not supported; you will need to first convert (export) to a supported format such as PS or PDF.

 

PDF's and Unusual Paper Sizes

Unfortunately, printing PDF's with page sizes other than letter will not usually transpire transparently; additional steps will probably be required. For example, to print a legal size file.pdf to printer 211,

acroread -toPostScript -size legal < file.pdf > file.ps lpr -P211-raw -o 'inputslot=tray1 media=legal' file.ps

Note that the -raw queue is needed here to override some enforced defaults.
For more information on acroread options, type acroread -help.

 

Saving Paper: Printing N-Up; Using Copiers

In addition to printing in duplex mode (see above), you can save lots of paper and wear-and-tear on the printers by printing “N-up.” This means that you reformat the print job to print 2 (2-up) or more reduced-size pages per physical page. For text files, this can be done with the enscript command, for example:

enscript -2r -P211 joesfile

For PostScript, use either of mpage or psnup.

psnup -2 {filename.ps} | lp -d 020 {some command} | mpage -2Sto -P128-dx

(mpage can also handle plain text.) For all of these commands, please see the man pages for more information.

 

Also, when making multiple copies of a document, please use one of the copiers (see the printer table above). Each page printed on a printer cost around twice as much as a page printed on a copier.

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If you have any comments, corrections, questions, or suggestions, please contact the Lab Staff.

• Changing your password
• Changing your login shell
• Check your group membership
• Group access to files

Changing your password

To change your password, run the folowing command at the UNIX/Linux command-line prompt:

passwd

You will be prompted for your current password, and then for your new password (you'll have to type the new one twice). If your new password isn't sufficiently obscure, it will be rejected.

Changing your login shell

To change your login shell run the UNIX/Linux command:

ypchsh

You will be prompted for your password, and for the full path to the shell of your choice.

Checking group membership

You can check your group membership by using the UNIX/Linux groups command. Note that when you are added to a new group, you may need to login again for the new group membership to take effect.

You can check the membership of a particular group by using the getent command; for example to find the users belonging to the group cps131, you would use the following command:

% getent group cps131 cps131:*:1131:fred,jones

where users fred and jones are the only members of this group. Note that this will not include group members who have the group ID as their primary group number in their password entry

Group access to files

Department members make frequent use of UNIX groups to share files among group members. It is possible to set up shared directories such that all files created within the directory inherit the default group, but it is up to the individual users to make sure the files have the proper permissions. This can either be handled manually, using the chmod command, as shown below:

% chmod g+w newfile

Alternatively, the user can affect all file creation permissions by changing their umask to 002 (the default is typically 022. Note if this method is chosen, this will affect all files created by the user!

Remote logins/Can't login to my desktop machine

If you are having trouble connecting to a department machine via ssh, please try connecting to login.cs.duke.edu first. Access to individual desktops is not guaranteed; these machines might be down for repairs or even be replaced entirely!

If you are experiencing problems logging into a known-available machine, particularly with the newer, Linux-based machines, you may have a problem with you account configuration files, or dot-files.