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Questions and Answers from the UCO

A more complete collection of Frequently Asked Questions can be found on our Web page at URL:

http://wwwinfo.cern.ch/uco/direct/#FAQs.


General

(Miguel Marquina  and the UCO team, IT/User Support)

Question

Is it possible for a user who is not working at CERN (e.g. someone in Dubna) to get an account on a CERN central computer (e.g. CERNSP)?

Answer

Yes, any group administrator can register an "outside" user with the usual registration procedure "userreg"". It is up to the group administrator to decide whether someone can get such an account. A registration form for "external user" should be signed by the administrator and sent back to the UCO.

To know who can act as a "group administrator" for this user type "xwho <name>", where <name> is the name of someone registered at CERN and who will work with this user. You will see the group code(s) that can be given to the user for registration, and clicking (or hitting <CR>) on this code you will get the list of all the group administrators.

Question

What shall I use on CERNSP for temporary disk space?

Answer

Many UNIX tools (e.g. editors) use the /tmp filesystem. On CERNSP this is deliberately small (i.e. 50 MB). User applications can use a bigger 500 MB file system called /tmp/scratch. On a batch node this is automatically set up as $WORK. On an interactive node a user should type:
 mkdir /tmp/scratch/userid: 
(N.B. the ':' is needed)
and write in there scratch files. (N.B. They are removed soon after logout.)


Mail and News Issues

(Miguel Marquina  and the UCO team, IT/User Support)

Question

What is IMAP?

Answer

IMAP (Internet Message Access Protocol) is one of the protocols that can be used by a mail "client" (the user interface for reading, sending and storing mails) to communicate with a "mail server" (machine which will receive and store mails for later dispatching). For instance, pine is a mail client (or agent) that uses IMAP, whereas Netscape Mail in "Netscape Version 3" is a mail client that uses another protocol called "POP" (POP3). Note that, in the future, "Netscape Version 4" will also offer IMAP support. IMAP is more modern and powerful, POP is easier to use but with more limitations. At CERN the "mail server" is the machine called MAILSERV (or mail.cern.ch).


X11 (X Terminal, X-Window System)

Question

On my workstation it was possible to un-lock a screen which has been locked by another user by entering the root password for this workstation. It is not possible anymore, why ?

Answer (provided by Lionel Cons, IT/DIS)

If the screen has been locked with the "standard" X-Window application xlock, this is just a resource of this application that has probably been removed (a change in the system configuration files for X resources). This can be controlled either with a command line option (xlock -/+allowroot) or an X resource. Look at the "Guide for the Usage of X Window at CERN" for precise information on the setting of X-Window resources.


NICE 95 (Jason Oh, IT/User Support)

From May 1st, NICE95, the Windows 95 environment at CERN, became the recommended PC environment. Many users will be encouraged to migrate to NICE95. Below is a selection of questions that have been asked at the UCO or have arisen from the NICE95 beta-testers working group. More questions (with answers) regarding NICE95 can be obtained via URL: http://wwwinfo.cern.ch/uco/FAQs#nice95

Question

I have bought a portable PC. Can I configure it to access NICE and where can I get assistance?

Answer

If you have bought your PC at CERN (PC shop), or if it matches to the level of cards and drivers the hardware they are recommending, then you can configure it to use NICE and eventually get assistance from the NICE team.

You can find a precise description of the supported hardware at URL:

 http://itdiswww.cern.ch/PC/pchome.HTML

If you want access to the NICE environment you must restrict your choice to one of the PC described in this list.

N.B. The hardware required for "Home Access to the CERN Network" as well as the "Installation instructions" are well descibed in the guide "Home Access to the CERN Network from Windows/95" accessible at URL:

 http://nicewww.cern.ch/doc/acb/acb.htm

Question

How can I, on NICE95, configure my environment so that an application (e.g. Netscape or CERNSP) launches automatically irrespective of which PC I am logging into?

Answer

This can be achieved by going from:
the Start button ==> Settings ==> Control Panel ==> Cern Settings
click on the Startup Tab and click on add
so for example for CERNSP put
Z:\P32\exceed\wnt\xsession.exe "Z:\P32\EXCEED\CONNECT\cernsp.ses"

or for Netscape enter
WI32 "Z:\P32\n_nav3\nice\Netscape.wi2"

Question

When I login into a NICE95 PC I get the "Selecting NDS tree" message appearing with a blank list or a list with all possible tree names at CERN.

How can I solve this?

Answer

This happens when a user has installed Linux on a PC with the default installation that causes it to advertise itself as a Novell 3.12 server. This is regrettable because then, when other Windows PC users try to connect to NICE, they may actually attach to this "Linux machine". This causes the blank dialog box to appear with the message "Selecting NDS tree".

Once this happens, the person responsible for the Linux PC is asked to either switch off or reconfigure immediately. If he cannot be contacted, the PC is blocked. Even then, users in the same segment will continue to be affected until that PC is switched off.

Therefore, if you experience this problem, you must inform the local administrators or contact the UCO immediately. You will then need to ask the local administrator to come and stop this blank NDS dialog box from appearing so you will then be able to login normally. Note that the IT/DIS/OSE (Open System Environment) is trying to warn Linux users not to configure their system in this way to reduce this problem (see the article "Linux Network Problems" in this CNL).

Question

In the "Using NICE95/NT" Guide it is documented that there are 350 fonts available, I can only see fifty of them, how can I access the rest?

Answer

The fonts are in z:\windows and must be installed on the computer using the control panel.

Be aware that when you use a font that is not installed by default on NICE, the document cannot be opened on a different computer unless you have installed the same font on the other computer.

Question

I am using NICE95/NT. How do I disable news from showing up on my PC every morning?

Answer

Be aware that the CERN.NICE newsgroup contains information vital to the NICE service and should be read and understood by all users (like changes to applications and scheduled maintenance).

Thefore, we do not recommed you to disable news at startup.

We will try to make this feature faster in the future (like for the case when there is no news waiting to be read). We promise to keep the news short, precise and not too frequent.

Question

I wish to use the HummingBird X emulator Exceed. Is there any general guidance available?

Answer

The DIS group is currently building up a support service for Exceed. In the meantime John Evans has produced a most useful introductory Web page at URL: http://wwwcae.cern.ch/Saber/exceed/exceed.html. Specific questions should be sent to Nice.Support@cern.ch.


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Next: Computer Documentation Up: cnl227.html Previous: Hyper-activity in the Web-world

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