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Due to the large number of printers and queues on site, the printer have been divided onto several CUPS server each serving only a subset of the available printer. Available CUPS server are:
For Information on CUPS at Zeuthen, refer to their Printing_with_Cups documentation. Note: a good deal of the information below originates from the Zeuthen page and is just replicated here.
The CUPS server at DESY is running on a central system. Actually, due to the large number of printer queues available, several CUPS instances serving a (group-specific) subset of printers have been implemented. For example, cups-hasylab provides all public printers as well as all hasylab printers. The CUPS server is pre-determined for each linux-host depending on the group the host belongs to. This is set in a single CUPS configuration file, /etc/cups/client.conf:
The default print backend is usually specified in
If you are unhappy with the default settings on a specific host or system, you can easily customize the CUPS server and printer configuration. However, some of the customizations are application specific.
It is possible to customize the print engine via the kprinter application. After starting kprinter,
click on the "Expand" button to see the advanced options:
Select CUPS as the Print system.
The system option allows you to set the CUPS server or filter the printer lists for all KDE-applications. The configuration will be stored in
Alternatively, the KDE print configuration can be customized through the Control Center. The printer entry under peripherals
provides additional information about available printers, allows to define the CUPS server as well as the default printer. Since the CUPS server is running on a remote host and not the local machine, further customization of printer queues or adding new printers is not possible! Since ~/.kde is often a link to a Operating System specific directory, it is possible to apply different settings for different operating systems.
Not all applications will actually use the KDE print engine. For example firefox or acrobat reader use a different configuration scheme. Acrobat reader will look in the users homedir for files .cupsrc or .cups/client.conf to define the print server. Adding a line like
in .cupsrc or .cups/client.conf will override the system-wide settings. This way you can define the CUPS server for
most non-KDE applications independently. Adobes Acrobat Reader for example will read the configuration files
everytime the print dialog is opened, so any changes to .cupsrc or
.cups/client.conf will be recognized instantaneously. Firefox in contrast needs a restart to update the
Some applications like inkscape seem to use exclusively a pipe like '|lp' for printing. Alternatively, using '|kprinter' provides a convenient way to select printer and printer configuration for such applications without the need to know exactly the lp options and printer names.
Noteworthy, the SL4 and SL5 cups versions are quite different and behave slightly different. For example, some applications under SL4 will ignore the settings in ~/.cups/ and exclusively rely on ~/.cupsrc or ~/.lpoptions. Applications running under SL5 in contrast will usually read both set of files, but settings in ~/.cups/ seemingly override those in ~/.cupsrc or ~/.lpoptions.
The configuration of individual printers can be customized through the applications print dialogs or with lpoptions:
lpoptions -p pubcp1 -l
will list all options set and available for printer pubcp1. The default settings for this printer can be changed for example by
lpoptions -p pubcp1 -o duplex=DuplexNoTumble # set duplex lpoptions -p pubcp1 -o duplex=none # print single sided lpoptions -d pubps2 # make pubps2 the default printer
The user-specific settings created by lpoptions are stored in
~/.lpoptions under SL4 ~/.cups/lpoptions under SL5
Printing from the command line under CUPS is fairly identical to the behavior under LPRng. However, CUPS and LPRng use quite different syntax for options parsed to the printer, so that it's not possible to use LPRng commands from (e.g.) acrobat reader once CUPS is enabled. Since it might occasionally be favourable to use LPRng printing syntax, the LPRng binaries are available under different names as
/usr/sue/bin/slpq or just slpq == lpq (LPRng) /usr/sue/bin/slpr slpr == lpr (LPRng) /usr/sue/bin/slprm slprm == lprm (LPRng) /usr/sue/bin/slpstat slpstat == lpstat (LPRng) Use for example slpq -h to get some help
Note: Since the CUPS server parses the print jobs to spool-lpr, print jobs will rapidly disappear from the list of active jobs, cancelling the jobs will thereafter only be possible with LPRng-commands slpq, slprm (see above).
Use the (s)lpstat command to list the jobs for a particular printer. Using (s)lpstat prints the status of all your print requests made by lp to the default or designated printer. To see the status of print jobs you have sent to the queue of the default printer that are still waiting:
lpq -l or better ... slpq -l
To check what jobs are pending for a particular printer, use the (s)lpstat -p command. For example, to view the queue for printer pubcp1:
lpstat -p pubcp1 or better ... slpstat -p pubcp1
Use the cancel command to stop the printing of a file. To cancel a job, even if it's already printing, use the lpstat command to find the job number. Then use the cancel command to kill that job. For example, if you want to kill the job pubcp1-4, enter:
cancel pubcp1-4 or better ... slprm -Ppubcp1 4
kjobviewer offers the same functionality via its graphical user interface:
Printing Options are passed to Cups using the -o Option of lp and lpr:
|sides=one-sided||disables duplex printing||lpr -o sides=one-sided testpage.ps||use printer/simplex if supported|
|sides=two-sided-short-edge||enables duplex printing for landcape pages||lpr -o sides=two-sided-short-edge myfile.gif|
|sides=two-sided-long-edge||enables duplex printing for portrait pages||lpr -o sides=two-sided-long-edge info.txt||default|
|page-ranges=RANGE||not the complete document is printed, but only the specified pages||lpr -o page-range=1,3-5,7 textfile||only for ASCII-text|
|number-up=number||places multiple document pages on a single printed page||lpr -o number-up=4 project.pdf||supported are: 1, 2, 4, 6, 9, and 16|
|Resolution=xxx||changes printers resolution||lpr -o Resolution=600dpi testpage.ps||lpoptions can be used to find out supported Resolutions fo a queue: lpoptions -p queuename -l |grep Resolution|
|media=Transparency||prints on transparent Media||lpr -o media=Transparency talk.ps||use printer/transp if supported|
|PageSize=A3||prints on DIN A3 paper||lpr -o PageSize=A3 picture.gif||use printer/A3 if supported|
|scaling=number||The scaling value is a number from 1 to 800 specifying the size in relation to the page (not the image.)||lpr -o scaling=100 pict.gif||can be used for image formats (GIF,JPEG,TIFF,...)|
|landscape||rotate the page 90 degrees to print in landscape orientation||lpr -o landscape picture.jpg|
|orientation-requested=N||rotates the page depending on the value of N||lpr -o orientation-requested=4 file.ps||possible values: 3: no rotation, 4: 90 degrees, 5: 270 degrees, 6: 180 degrees|
|job-sheets=none||do not print bannerpages||lpr -o job-sheets=none file.ps|
|cpi=NUMBER||scale font to NUMBER characters per inch||lpr -o cpi=9 textfile||only for ASCII-text|
|lpi=NUMBER||scale font to NUMBER lines per inch||lpr -o lpi=9 textfile||only for ASCII-text, this overwrites the cpi-option|
If you are still running LPRng and would like to migrate to CUPS or if you are unhappy with
the default print server, please contact firstname.lastname@example.org. Note: migration is
only possible for SL4 or newer. If the OS is SL3 or older, upgrading the OS is the only option.
If you believe that a printer is missing from a particular server or see discrepancies between printer configuration and capabilities, please contact email@example.com.
For all other questions consult the FAQ or drop a message to UCO.
Copies are not collated by default. Use the -o Collate=True option to get collated copies:
In order to change the borders around each page, use the -o page-border=value option. Supported borders are:
Example: lp -o number-up=4 -o page-border=double myfile. In order to change the arrangement of the pages on each output page, use the -o number-up-layout=value option.Possible values are:
tblr: Top to bottom, left to right
Explanation: The default layout is lrtb(Left to right, top to bottom). This means: using a number-up of 4, the first page will be printed on the top-left of the outputpage, the second page will be printed on the top-right, the third page will be printed on the bottem-left and the fourth page on the bottom-right of the outputpage. Example: lp -o number-up=4 -o number-up-layout=btrl myfile
To print man pages use: man -t <man-doc> | lp ...
To print iso8859-1 characters encoded in utf-8, just print the file as usual. Cups will select the correct filter automatically. If you want to print non-iso8859-1 characters (e.g. Cyrillic or Chinese characters):
YES! The size of ASCII-text can be changed by using the cpi (characters per inch) or lpi (lines per inch) options. Unlike Cups-default, the cpi -option will be ignored if both options are present. Default is a value of 80 characters per virtual line in portrait, and 113 characters per virtual line in landscape mode. This means a value of round about 9.7 characters per inch.
Use one of the following two methods to let your local cups communicate with our server. Afterwards you can use cups as described above.
lpadmin -p <my_printer_name> -E -v ipp://cups-public.desy.de/printers/<printer_name>
CUPS_SERVER=cups-public.desy.de # zsh lpstat -a # to see all printers lp -d < printer> ...
lpstat -h cups-public.desy.de -a # to see all printers lp -h cups-public.desy.de -d < printer> ...
If you have no local cupsd running, just change the Servername directive in /etc/cups/client.conf to cups-public.desy.de
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