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Overview | |
- Hardware:
- 34 workstations: AMD Athlon XP2000+,
1GB, diskless, Samsung CDRW/DVD combo, 21" trinitron monitor
- Facility Location:
- B2 (8 workstations, undergrad), B3 (20 workstations, classes), B6 (6 workstations) Rockefeller Hall
- B3 phone: 5.1519
- Physics classes in B3 (please use B6 at these times):
- Usually if you walk in while a class is going on, either
you will realise yourself or someone will tell you.
Please use the spillover room (B6) in those cases until
the class gets over.
- Door Access:
- Cornell ID acces provided for
legitimate users. Swipe your ID, thumb on picture. If you
are not in the system contact your course instructor, or
Physics Office at 117 Clark Hall.
- Operating system:
- Ubuntu Linux
- Usernames:
- first initial last name (e.g. 'John Doe' is 'jdoe')
- Change Passwords:
yppasswd from shell prompt
- Remote Access:
- To log in to the remote access machine,
ssh -X
username@remote.physics.cornell.edu from remote
client shell prompt. The remote access machine has
limited software, and is mainly for checking mail (among
other things). You can further ssh to ws[01-34] to use
other software.
- To log in to one of the nodes ws[01-34] directly,
ssh -X username@ssh.physics.cornell.edu
from remote client shell prompt. This is a round-robin
queue that forwards each new connection to the next
available node. So for example, if you execute this once
and land on ws23, then the next time anyone from
anywhere (could be you, also) executes the same command,
(s)he will land on ws24 (or ws25, if ws24 is down).
- The advantage of using remote.physics.cornell.edu is
that you land up on the same machine every time, and the
machine is never down. But it has limited software,
certainly no compilers. The advantage of using
ssh.physics.cornell.edu is that you land on a fully
functional machine with all compilers and softwares. But
you land on a different machine every time, and on rare
cases some irresponsible user physically present in the
computer room may just decide to reboot the node on
which you logged on.
- Start shell/command line from window manager:
- Generally, screen icon can be clicked or menu listing (click mouse on background) can be activated
- Use HELP on system:
- Depending on your window manager there is an icon
(floating device?) on your desktop, or you can find it through the system menus.
apropos <keyword> from shell prompt
man <command> from shell prompt
- Useful websites:
www.google.com
www.linuxnewbie.org
www.debian.org
lists.debian.org
bugs.debian.org
- Our root certificate (so that you can access webmail and IMAPS:
- Import this into your browser or email program.
- Do NOT imprudently power cycle machines:
- you will be logged doing so and may have user privileges revoked
- Do NOT lock your screen and leave for more than a coffee break:
- You will most likely forget that you locked your screen and leave a machine dysfunctional
- If you do this consistently and inconvenience people, your account will be locked
- Debian tools to query packages (advanced):
apt-cache and dpkg
- Available Desktops / Window managers:
- Gnome/Sawfish (default), KDE, Blackbox, Fluxbox, Enlightenment, Windowmaker, ICE, ...
- select from 'Session' on login screen
- LaserJet Paper refills:
- Available from Cindee or Kacey in main Physics office
- Current System Administrator:
- Woosong Choi
- 520 Clark Hall, Tel. 5.6071
- Backup System Administrator:
- Sourish Basu
- 542 Clark Hall, Tel. 5.6069
- Ivan Daykov
- 604 Clark Hall, Tel. 5.6311
- Original System Architect:
- Daniel Freedman
- Emergencies / Hardware Catastrophies Only:
- Administrator contact number: (607) 583 3033
- E-mail:
help _AT_ physics.cornell.edu
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