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Dept. of Computer Sciences > CIP> Documentation > FAQ
Frequently asked Questions

  • How do I get my login?
    You have to apply via computer. To access the registration form, you need a special login-name which will be given to you in one of your first Algo lectures.

  • I just completed the registration form. How long does it take before I can actually use my login?
    Since we are unfortunately somewhat busy with our own studies, it may take up to a week.

  • The registration form only asks me to supply a password. What about my personal login-name?
    Your login-name is the same you use for everything else, e.g. in the RRZE, it should be printed on your student id. In most cases, its a random, cryptic combination of two letters, two digits followed by four letters. There is also an older type of login which starts with si for Student Ingenieurwissenschaften (engineering student), followed by the first two letters of your first name and the first four of your family name, e.g. sihamust for Hans Mustermann.

  • How do I change my password?
    Use the command kpasswd.

  • Can you email my password to me?
    Under no circumstances. Also, we do never need or request your password by mail or in person.

  • I have a valid login, but the system does not accept my password / I have forgotten my password.
    Please come by during consultation hours. A new password has to be set with the help of the administrator and this cannot be done via e-mail or phone. You have to appear in person and bring a student and photo id.

  • Can you teach me the basics of Unix?
    No, you will learn everything you need to know as part of your tutorials. Our job is to keep the system running as smoothly as possible.
    If you want to learn more about Unix, you can also consult the WWW, e.g. http://www.linuxdoc.org.
    Here, you will find among other things, the Linux User Guide and Linux Installation and Getting Started.

  • Whom do I contact in case of problems with the computer?
    This is a definite case for the CIP admins. You can either fill in and send the special form, write us an e-mail to problems@cip here or visit with us during consultation hours.

  • I cannot read my e-mails under my CIP login, how can I change that? How can I re-direct my mail?
    If you have already re-directed your mail as part of Felix (use RRZE-login) and you now want to read your mail, using your CIP-login, you need to change the target-mailbox in Felix to si......@stud.informatik.uni-erlangen.de You can also use other addresses here. It can take up to 24h for this change to actaully take effect.
    To forward mail from the CIP-Pool, you have to make the according changes in the .forward file. These will take effect immediately.

  • How do I access my mail with POP3?
    The password for the POP3-service needs to differ from your normal CIP-Pool password as the server can be reached unencrypted over the internet. To set your POP3-password run the following command on a CIP-machine: /local/bin/poppasswd
    Now you can access the POP3 server by using the address cippop.informatik.uni-erlangen.de .

  • How do I access my mail with IMAP?
    Our IMAP-Server looks for its INBOX and folders in the directory ~/Maildir. To have arriving mails delivered to this folder, change your .forward file in your home to include the following line (usually it should be the only line):
    ~/Maildir/
    To create the initial Maildir, you have to execute the following commands:
    mkdir -p ~/Maildir/{cur,new,tmp}; chmod 700 ~/Maildir/{,cur,new,tmp}
    Now you can reach the SSL secured IMAP-server at the address cippop.informatik.uni-erlangen.de, Port 993 . The password is your CIP-login password.

  • How do I create my own homepage?
    Please check out the guidelines for the creation of your own HTML-pages. .

  • How much disk-quota (space) do I have as part of my CIP-login?
    For the first two terms every student has 25MB as part of his Home. You can check how much of this you have in use / free, with the command. quota -v Home.stand is your home-directory and proj.stand are your projects (not relevant before the third term).

  • I can't logon. If I try a blue screen appears for a second and the logon prompt appears again.
    It is very likely that you have to high diskusage. To delete some files it is possible to use the Console of a Linux box. You can access the console by typing 'Ctrl-Alt-F1'. Logon with username and password and you get a shell. Now you can check your diskusage with 'quota -v'. If you're over diskquota you can delete some files using rm. Most of the time it is enough to delete the Adobe fontcache using 'rm -rf ~/.adobe'. As soon as 'quota -v' tells you that your're no longer over diskquota you can logout from the console, switch back to the Xwindow system using 'Ctrl-Alt-F7' and continue your work.

  • Where can I pay into my printer account?
    You can do so in the office of computer science. The office is located on the second floor of the computer science building, opposite the CIP-Pool.

  • How can I change my login-shell?
    You can change your login-shell with the program /local/bin/envcfg

  • How can I burn a CD in the CIP-Pool?
    to achieve this, you have to create a file containing an ISO9660-file system. You can then burn this on CD using cdrecord on the computers faui06[a-p] or faui08[a-p]. Please see the comands in the following. For a more detailed explanation please see the mkisofs and cdrecord man pages:
    1. mkisofs -o output.iso file1 file2 .. directory1 directory2 ..
    2. cdrecord output.iso

  • How to print in the CIP-Pool?
    There are five printers in the CIP pool, of which two are located on the first, and three on the second floor of our building. The printers are named as follows:

    1st floor 2nd floor
    ps1bcip ps2bcip
    ps1ccip ps2ccip

    To access a printer, you have to provide the program a string describing the printer you want to use. If you are using lpr, the corresponding command line might look like this:
    $ lpr -Pps2bcip skript.ps There is also a difference in printing in oneside, twoside or twoside tumble (landscape) mode. E. g. for the printer ps2bcip, there are following modifications:

    normal printing ps2bcip
    twoside ps2bcipd
    twoside tumble ps2bcipt


  • I have sent a document to the printer but nothing happens.
    Probably your job or the one of another user, has caused a malfunction of the printer or the printer system (eg. paper jam). Such problems may result from miscreated documents or any other paper format than Din A4. In this case the job should be deleted from the printer queue. Otherwise it might happen that the job is printed after solving the problem and the credits are debited of the printing account. The command lpq -P <printer> shows the printer queue with all jobs and their job numbers. A job can be removed from this queue with lprm -P <printer> <job>

  • Credit has been debited of my printer account without printing anything.
    Likely the job was printed long time after sending it. (see section above)

  • Why does my printout look weird?
    There are several common reasons for broken printouts, but unfortunately there is no simple common way to avoid them. Wrong fonts, overlapping, mis-positioned Glyphs or overlong lines are mostly due to missing fonts in a PDF file. This problem can best be avoided by generating the PDF-Files with the option 'PDF/A' or 'PDF for archiving' selected. When using TeX, try pdflatex instead of ps2pdf.
    When printing slides, often the function to print 2, 4 or 8 slides on a page is misbehaving. We recommend using pdfnup instead of psnup or the KDE printing dialog (which uses the broken psnup internally).
    Generally best results are accomplished by printing or converting files using acroread while especially kpdf produces broken printouts very often.

  • Is there a way to see if a person is logged on, and where?
    You can use the command woist username. The optional parameter -l shows only local logins.

  • How can I obtain a list of the installed software?
    To achieve this, you have two commands available. lslocal shows you all available programs located under /local, and dpkg --get-selections returns all installed debian packages. You can also search for a specific debian package by using grep-available -P <package>.

  • I am a staff member and want to give a student/coworker access to a lab.
    Please send an eMail to problems@cip in the following format.
    allow <matrikelnumber|login> <doorgroup> <YYYY-MM-DD>
    
           doorgroup       |                    description                    |                                                 doors
    -----------------------+---------------------------------------------------+--------------------------------------------------------------------------------------------------------
     AQUARIUM              | Seminarraum gegenueber Manlobbi                   | I4-NORD HH-RECHTS HH-LINKS 0.031
     AQUARIUM_UL           | Seminarraum gegenueber Manlobbi UNLOCK            | 0.031
     BELLOLABS             | Bellolabs + I4-Zugang                             | I4-NORD MANLOBBI I4-OSTFLUR I4-SUED 0.033 MANLOBBI-FLUR I4-WESTFLUR
     BELLOLABS_UL          | Labor 0.033 I4 (Bello Labs) UNLOCK                | 0.033
     EGPA                  | Informatik + EGPA                                 | HH-HINTEN 00.157 HH-RECHTS 01.155 HH-LINKS 01.155neben 02.151
     FABLAB                | FAU FabLab                                        | 01.1541 02.172
     FSI                   | Fachschaftsinitiative Informatik                  | 02.150
     HH-AUSSENTUEREN       | Aussentueren des Informatik Hochhauses            | HH-HINTEN HH-RECHTS HH-LINKS
     HUBER-CIP             | Aussentuer von Martensstr. 5a und CIP 0.01        | HUBER-AUSSEN HUBER-CIP
     I2-CIP                | I2 05.125                                         | HH-RECHTS HH-LINKS 05.125
     I2-MITARBEITER        | I2 05.130/05.132 + 05.125/05.150                  | HH-RECHTS 05.150 HH-LINKS 05.125 05.130 04.150
     I2-MITARBEITER_UL     | I2 05.130/05.132 + 05.125/05.150 UNLOCK           | 05.150 05.125 05.130 04.150
     I3-02.153             | I3 02.153 (Multiprozessorlabor)                   | HH-RECHTS HH-LINKS 02.153
     I3-LABOR              | I3 Labor 02.170                                   | 02.170
     I3-MITARBEITER        | I3 02.153,02.170,02.172,07.150                    | HH-RECHTS 07.150 HH-LINKS 02.153 02.170 02.172
     I3-MITARBEITER_UL     | I3 02.153,02.170,02.172,07.150 UNLOCK             | 07.150 02.153 02.170 02.172
     I3-PRAKTIKUM          | I3 Praktikum 02.153                               | 02.153
     I3-PRAKTIKUM_UL       | I3 Praktikum 02.153 UNLOCK                        | 02.153
     I3-ROBOT              | I3 Robot 02.172                                   | 02.172
     I3-ROBOT_UL           | I3 Robot 02.172 UNLOCK                            | 02.172
     I3-SEMINAR            | I3 Seminarraum 07.150                             | 07.150
     I3-SEMINAR_UL         | I3 Seminarraum 07.150 UNLOCK                      | 07.150
     I4-ALL                | I4-Aussen, alle Tueren, EGPA                      | 00.157 I4-NORD MANLOBBI I4-OSTFLUR I4-SUED 0.033 I4-RECHNER MANLOBBI-FLUR I4-WESTFLUR 0.031
     I4-AUSSEN             | I4 Aussentueren                                   | I4-NORD HH-RECHTS I4-SUED HH-LINKS
     I4-FLUR               | I4 Flur                                           | I4-OSTFLUR I4-SUED I4-WESTFLUR
     I4-FLUR_UL            | Innentueren LS4 Sued UNLOCK                       | I4-OSTFLUR I4-WESTFLUR
     I4-SERVER             | I4-AUSSEN + Zugang zum Serverraum                 | I4-NORD MANLOBBI I4-SUED I4-RECHNER MANLOBBI-FLUR I4-WESTFLUR
     I4-SERVER_UL          | I4 Serverraum UNLOCK                              | I4-RECHNER
     I5-ALL                | I5 Labore 00.158 und 01.134                       | HH-RECHTS HH-LINKS 00.158 01.134
     I5-BILD               | I5 Bildlabor 01.134                               | HH-RECHTS HH-LINKS 01.134
     I5-SPRACH             | I5 Sprachlabor 00.158                             | HH-RECHTS HH-LINKS 00.158
     I6-01.152             | I6 01.152 (DB CIP)                                | HH-RECHTS HH-LINKS 01.152
     I7-CIP                | I7 04.158                                         | 04.158 HH-RECHTS HH-LINKS
     I7-KURS               | I7 01.1541                                        | HH-RECHTS HH-LINKS 01.1541
     I7-LAB                | I7 02.176                                         | HH-RECHTS HH-LINKS 02.176
     I7-MITARBEITER        | I7 01.1541 + 02.176 + 04.158                      | 04.158 01.1541 02.176
     I7-MITARBEITER_UL     | I7 04.158 UNLOCK                                  | 04.158
     I7-RECHNERRAUM        | INF7 Rechnerraum 04.158                           | 04.158
     I7-STUDENT            | I7 02.176                                         | HH-RECHTS HH-LINKS 02.176
     INFORMATIK            | Blaues Hochhaus Eingaenge + public CIP Pools      | HH-HINTEN 02.152 HH-RECHTS HUBER-AUSSEN 01.155 01.153 HH-LINKS 00.156 01.155neben 00.152 00.153 00.151 0.031 02.151
     INFORMATIK-BIB        | Informatik Gruppenbibliothek                      | HH-RECHTS HH-LINKS 02.133
     INFORMATIK-BIB_UL     | Informatik Gruppenbibliothek UNLOCK               | 02.133
     INFORMATIK-STUD       | Blaues Hochhaus Haupteingaenge + public CIP Pools | HH-HINTEN HH-RECHTS 01.155 01.153 HH-LINKS 00.156 00.152 02.133 00.153 00.151 02.151
     INFORMATIK_UL         | Unlock fuer Seminarraeume + Windows-CIP           | 02.152 01.153 00.156 00.152 00.153 00.151 0.031
     ISER                  | ISER Zugang 01.135                                | HH-HINTEN HH-RECHTS HH-LINKS
     MANLOBBI              | I4-AUSSEN + MANLOBBI                              | I4-NORD MANLOBBI I4-OSTFLUR I4-SUED MANLOBBI-FLUR I4-WESTFLUR
     MEDTECH               | Fachschaftsinitiative MedTech (Medizintechnik)    | 01.150
     RRZE-CIP              | Windows CIP Pool des Rechenzentrums               | 01.153
     RRZE-CIP_UL           | Windows CIP Pool des Rechenzentrums UNLOCK        | 01.153
     SEMINARRAEUME         | Seminarraeume Informatik + I4                     | 01.153 00.156 00.152 00.153 00.151 0.031
     SEMINARRAEUME-HH      | Seminarraeume Informatik Hochhaus                 | HH-RECHTS HH-LINKS 00.156 00.152 00.153 00.151
     SEMINARRAEUME-HH_UL   | Seminarraeume Informatik Hochhaus UNLOCK          | 00.156 00.152 00.153 00.151
     SEMINARRAEUME-I4      | Seminarraeume LS4                                 | I4-NORD 0.031
     SEMINARRAEUME-I4_UL   | Seminarraeume LS4 UNLOCK                          | 0.031
     SEMINARRAEUME_UL      | Seminarr. Inf + I4, UNLOCK                        | 01.153 00.156 00.152 00.153 00.151 0.031
     SEMINARRAUM-00.151    | Seminarraum 00.151                                | HH-RECHTS HH-LINKS 00.151
     SEMINARRAUM-00.151_UL | Seminarraum 00.151 UNLOCK                         | 00.151
     SEMINARRAUM-00.152    | Seminarraum 00.152                                | HH-RECHTS HH-LINKS 00.152 00.153
     SEMINARRAUM-00.152_UL | Seminarraum 00.152 UNLOCK                         | 00.152 00.153
     SEMINARRAUM-02.152    | Seminarraum 02.152                                | 02.152 HH-RECHTS HH-LINKS
     SEMINARRAUM-02.152_UL | Seminarraum 02.152 UNLOCK                         | 02.152
    
    
    
    examples:
    allow sithglan EGPA 2004-05-30
    allow 12345678 I3-02.153 2004-05-30
    allow 23489582 SEMINARRAEUME_UL 2006-12-31
    

    Please only one statement per line. Doorgroups with a suffix _UL and 'UNLOCK' in their respective description have the additional right to unlock doors for some period of time (e.g. for seminar rooms during lessons). Every access right is granted immediately and expires on the date given.

  • How do I permanently unlock doors?
    Touch the reader twice within 2 to 7 seconds with your card or token. Make sure, that you keep your card / token at a large enough distance in between. Locking works in the same manner. Always check that the door is really closed!

  • Why are the computers shut-down each evening? Which machines are always reachable?
    Having our machines run all the time in the computer pools causes a lot of expenses for the University. Because we know that only a few computers are really used during nights, we have decided to set up the following rules which ensure both saving a lot of power and also do not keep you from doing the work you intend to:
    • During the nights (20:00 - 08:00), on weekends, and during the term holidays, we shut down major parts of the computer pool.
    • Remote users (using ssh) will be able to use the faui00* and faui06* computers, for they will remain switched on.
    • Local users in need for a computer can simply activate computers by pushing the power button or (where possible) by pushing a key on the keyboard. The computers will then come up to normal operation again.
    • Computers involved in the powersaving cycle will shut down again when no local user is logged on for 30 minutes. This shutdown will be cancelled automatically by logging in locally.
    So just don't bother if you see a computer deactivated. If you need one, switch it on as you see fit, as long as the computer is not explicitly marked as defunctional.

  • Is there a possibility to mount usb-sticks in the CIP-pool?
    Mounting of USB-sticks is only possible on machines with front-panel USB-connector.
    After pluggin in the stick, it can be mounted with the command mountusb. Do not forget to umount it before disconneting! This is done with umountusb. As filesystem only FAT is available; NTFS or ext2/3 won't work due to technical problems.

  • I played around with chmod and locked myself out of my home directory
    Hit Ctrl-Alt-F1 on a regular Linux computer (no Sunray), log in, type chmod u+rwx ~yourlogin, log out via exit. You get back to the graphical login via Ctrl-Alt-F7.

  • Lately my desktop looks different and I get error and crash messages from kmix and policykit when logging in
    After the end of winter term 2010/11 we upgraded our systems to Debian Squeeze. Among other software packages, our standard desktop environment was updated from KDE 3.5 to KDE 4.4.

    At that point, we and others noticed a number of severe problems. Most obvious on a first glance, KDE starts with two crash messages from kmix and policykit-kde. The crash of kmix seems to occur when kmix can not open a sound device, e.g. because the sound device is still in use by a program from a previous user. While this leads to sound not working, it can be safely ignored if no sound output is required. The reproducible and 100% likely crash of PolicyKit-KDE occurs for reasons unknown to us. But since PolicyKit is useless for users without administrative rights this crash may also be safely ignored.

    Because of those and other problems (akonadi: frequent crashes, filled quota due to its database, loss of data, problems on NFS, PIM applications beeing unusable because of this; nepomuk: extreme resource usage (disk space, I/O, CPU); usability of the whole KDE Desktop dubious) we have decided not to "impose the burden" of KDE 4 as a standard desktop environment upon us and our users. Therefore GNOME 2 is the recommended standard desktop environment for all new users.

    For all users wanting to continue to use the KDE 3 environment they have become accustomed to we installed Trinity, which is a continuation of KDE 3. All users who have previously used KDE 3 will now automatically use Trinity. While this brings a slight change in appearance and unfortunately also has the (ignorable) problem with policykit-kde crashing, it works flawlessly on all other accounts. Using KDE 4 will of course be possible, but we strongly recommend against it for the reasons mentioned above.

    To switch between the mentioned and some other desktop environments, you can always enter the command /local/bin/envcfg into a console. At your next login the changes will be active.

  Contact Last modified: 2012-02-06 21:22:40   sirasenn