Information on our Linux computers

Printers

We use CUPS as printing system for our Linux-PCs. In the following, some helpful hints concerning the use of this printing system are gathered.

First of all, there exits a web interface to CUPS, which may easily be accessed via any browser under the URL:

http://zeno.physik.uni-augsburg.de:631/

There one may, for instance, obtain a list of all available printers/queues and of the presently queued jobs.

Of course, a command line interface is also present: To show the list of all printers, one may use

$ lpstat -a

and the queued jobs for a printer with name "printername" may be obtained by

$ lpq -Pprintername

Printing of a file named "file" is done via

$ lpr -Pprintername file

and cancelling of a queued job is possible with

$ lprm -Pprintername jobID

where the jobId can be obtained with help of the lpq command. Note: lprm without any parameters cancels the current job on the default printer, which is exactly what one wants in the generic case...

On our Linux systems, there is also a graphical utility for printing named kprinter. Just use

$ kprinter file

Last but not least, the list of currently available printers/queues looks as follows:

Printer	Comment
mark2	b/w double sided printing	on the Lexmark printer (default)
mark	b/w double sided printing	on the old Lexmark printer (room 471)
mark_s	b/w single sided printing	on the old Lexmark printer (room 471)
mark_f	b/w printing on transparencies	on the old Lexmark printer (room 471)
colourtp1	colour printing	on the HP printer
colourtp1_f	colour printing on transparencies	on the HP printer
epson	colour printing	on the Epson printer
epson_f	colour printing on transparencies	on the Epson printer
epson_a3	colour printing on A3 paper	on the Epson printer

Scanner

A scanner is installed on our computer 'zeno' (located in Computeraum Theoretische Physik I). For scanning and for later manipulation of the aquired image, the programm "GIMP" may be used. If there are any problems with the scanner (if e.g. the message "unknown device" appears), you have to re-initialise the scanner by entering the command "resetscanner" on a console. A short description for scanning may be found near the scanner.

CD burning

Before starting to burn, each user has to create a subdir with the name of his user id under /home/ltmp (see below). Then you put the files you want to burn in this directory and start the burning process via

$ addsession uid

Here uid is your user id.

Local temporary directory (/home/ltmp)

The preferred place for the storage of user data is the DFS home directory. Please contact Ralf Utermann, if you need more disk quota. On each PC, there also exists a local temporary directory /home/ltmp, where you may store additional data. But please keep in mind that the contents of this directory are not backuped. Moreover, they may be deleted by the system administrator at any time without further notice!

If you still want to use /home/ltmp, please place your files in a sub directory whose name has to be your user id.