https://zzz.physics.umn.edu/ 2026-04-18T03:18:20+00:00 https://zzz.physics.umn.edu/ https://zzz.physics.umn.edu/_media/wiki/dokuwiki.svg text/html 2015-08-13T23:34:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/checking_or_requesting_software?rev=1439508847&do=diff Checking for or requesting software packages Checking for software on a computer Software can be made available using a number of methods on our linux systems * installed using the native linux package manager (rpm/yum) * available within “modules” text/html 2009-07-29T02:06:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/desktop?rev=1248833219&do=diff Linux Desktop Environment Two desktop environments are available on the linux systems: KDE and GNOME. The default is KDE. To switch desktop environments you must be logged out and at the hellolinux login screen. Click Options and then Select Session.. text/html 2016-02-02T19:52:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/file_storage?rev=1454442743&do=diff Data storage on Unix Home directories Your home directory on the Unix cluster has a usage quota, to avoid too much space being taken by individual users. The standard quota is normally somewhere around 10GB. You can see your current usage and quota by visiting text/html 2009-11-15T23:14:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/ftp?rev=1258326850&do=diff More Information unix index FTP service on Unix FTP server access For security reasons we no longer offer any FTP servers (although the client ftp command, to connect to other FTP servers, is still available). To access your own files from outside, you should use a secure file transfer system such as SCP or SFTP. If you need SFTP software for Windows or Mac, see our text/html 2013-07-03T17:03:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/google_chrome?rev=1372871009&do=diff Google Chrome Google currently build all their Chrome packages using Ubuntu, and as a result the Redhat packages they produce are broken with respect to several important libraries. Because of this we are unable to provide Chrome on any of our linux systems. If you need an alternative to the default Firefox, Opera is also available. text/html 2021-06-22T19:44:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/groups?rev=1624391095&do=diff Group memberships and permissions Group Membership is tied to Active Directory groups for both Windows and Linux. On Linux, run the group command to see what groups you are in. On CentOS7 computers using InternetID authentication, a useful tool is /opt/quest/bin/vastool attrs [groupname|username] text/html 2015-12-16T17:07:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/home?rev=1450285659&do=diff Department Unix topics unix index Unix and Linux in UMN Physics The main departmentally-supported systems in the Physics Unix network are servers and workstations running Scientific Linux. Our systems support both general departmental and student computing, and research activities within various research groups including High Energy Physics, Nuclear Theory and Cosmology, the Fine Theoretical Physics Institute, and Minnesota Institute for Astrophysics.news index text/html 2007-06-11T16:04:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/kerberos?rev=1181577840&do=diff More Information unix index Kerberos on Unix At present, only Kerberos client applications are supported. On Tru64, the kerberized versions of telnet and ftp can be found in /usr/local/bin. On Linux, they are present in /usr/kerberos/bin. text/html 2007-06-11T15:28:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/mail?rev=1181575698&do=diff More Information unix index Email on Unix and Linux For most users we recommend using Thunderbird. More detailed instructions on how to configure this are included on our general mail support pages. For users accessing Unix via a terminal application (such as ssh), Pine is a popular mail program, and can be run simply by typing text/html 2009-07-29T02:10:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/office?rev=1248833412&do=diff More Information unix index Editing Documents Both OpenOffice and Microsoft Office 2003 (Word, Excel and Powerpoint) are available on the linux systems. You can find these programs either in the KDE/Gnome start menus, or you can run them from the command line using the commands text/html 2021-05-04T21:44:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/printing?rev=1620164676&do=diff Printing from Unix Printing on Linux is handled through CUPS utilizing the cups.cse.umn.edu print server The command to print from a Unix system to any of our network printers is: lpr -P printer filename ...where printer is the name of the print queue (usually the room number). The queues accept many (but not all!) file types directly, such as image files and PDF as well as text or Postscript. Application-specific files such as text/html 2015-02-20T22:28:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/public_key_ssh?rev=1424471287&do=diff SSH and Public Key Authentication Public key authentication allows you to prove your identity to the physics unix machines--and thus login--without the use of your account password. Managed Systems Public and private key pairs are already available for all users on department unix machines. As a result repeated password entry is unnecessary when connecting to other managed machines. Additionally, the same functionality text/html 2010-05-18T19:20:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/removable_media?rev=1274210440&do=diff More Information unix index Removable Media To access data CDs and hot-plugged USB storage devices on linux workstations, simply insert the CD or connect the device. The media should mount automatically, placing an icon on the desktop and opening a listing of the files on the device. This also adds a corresponding entry under /media with a name based on the label of the media. text/html 2015-08-13T23:34:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/software?rev=1439508847&do=diff More Information unix index Locally-installed software While some software packages are automatically available to all users (they are included in the default PATH), many are available via the modules system and have to be activated before use. Mathematica Activate using text/html 2019-06-17T15:24:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/ssh_keychain?rev=1560785061&do=diff Using keychain with SSH If you use ssh's built in public-key/private-key passwordless authentication with an encrypted private key, you may find it annoying to enter the private key password in all the time. ssh-agent provides some releaf for the problem, but not to as far an extent as we would hope. So, the nice folks at IBM created ${SSH_AUTH_SOCK}x" == "x" ] && [ "$ text/html 2016-02-19T16:43:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/systems?rev=1455900188&do=diff Available Systems We have a large number of linux systems available. Some are available for general use, while some are for the use of specific research groups. * spartha.spa.umn.edu (also known as ssh.physics.umn.edu) is intended for general-purpose, lightweight, interactive computing for the entire department. Examples include reading email, or as an ssh destination/proxy. text/html 2007-06-11T15:36:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/text?rev=1181576201&do=diff More Information unix index Text File Editing Several editors are available, including vi, emacs, XEmacs, nedit, and pico. If you are using an X-windows (graphics) terminal, We recommend two editors: NEdit and XEmacs. NEdit is probably the simplist one to start with. text/html 2011-03-18T01:08:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/updates?rev=1300410507&do=diff Scheduled Updates Departmental Linux systems may be restarted from time to time in order to stay current on security updates. Reboots are automated for workstations, and will take place near the 1st of the month, and only where and when needed. In general, we will schedule a restart when a newer kernel has been installed but is not yet running. text/html 2009-07-29T02:13:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/web?rev=1248833596&do=diff More Information unix index Web browsers Several web browsers are available on the Unix and Linux systems. The browser we recommend and support on linux is firefox. * SL5 linux ships with firefox 3.0 by default. Some linux systems may also have Microsoft Internet Explorer available, as part of the Crossover Office installation, but we do not recommend or support its use. text/html 2009-05-18T22:21:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://zzz.physics.umn.edu/computing/department/unix/x11?rev=1242685278&do=diff X Windows security The X window system poses a serious security risk if it is not properly secured. If your X11 server (the screen, keyboard and mouse of any Unix system) is insecure, it will allow any other program on the internet to copy your screen's contents, capture your keystrokes, and sometimes forge keystrokes as if you typed them yourself.