https://www.cs.vassar.edu/ 2026-04-18T13:54:54+00:00 https://www.cs.vassar.edu/ https://www.cs.vassar.edu/_media/favicon.ico text/html 2020-07-04T21:04:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/x2go?rev=1593896682&do=diff X2Go -- Remote Desktop Access About X2Go is a program that lets you use your account's desktop remotely. Imagine that you want to do work using DrRacket (or DrScheme, Netbeans, etc.) from your home computer but don't want to deal with the fuss of copying your work onto your CS account afterwards. text/html 2025-06-27T18:46:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/frozen?rev=1751049974&do=diff Frozen Machine! If you have a process, a window, or a machine that seems to have “frozen” while you were working on it, became “stuck,” is not responding to the keyboard or mouse, or is spewing out garbage into a window here is what you can try. If the steps below don't work, please get more help! Either ask a coach, an instructor or find or write me. text/html 2023-01-26T15:53:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/logging_out_of_a_desktop_or_remote_desktop?rev=1674748402&do=diff Logging out of the Computer Science Computers Leaving files open in editors such as pluma and emacs, or leaving applications running can lead to corrupt files and loss of your work because your files are not local to any computer. Your files are shared from a central server. Therefore, if you leave an application open on one computer and then go to another computer, you have several devices trying to access your files. Applications don’t like this. Firefox, for example, won’t allow you to star… text/html 2025-06-27T18:49:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/browser_wont_start?rev=1751050146&do=diff Help, my browser won't load! Generally, if you click the browser icon and it doesn't do anything, or gives you an error that mentions profiles, there's probably a previous instance of the browser that didn't clean up after itself. The first thing to check is if you have the browser open on another workstation. If you're logged into two workstations and try to start a browser on both of them, it will cause an error because the application wants to ensure that there is only one copy of it running… text/html 2025-09-30T20:21:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/access?rev=1759263688&do=diff Remote Access If you want to connect to CS machines from your dorm room or home, use a web browser or an SSH client. SSH encrypts all communications, so connections are secure. CS systems are normally accessible only from campus networks; for off‑campus access the supported method is Citrix. Citrix works best via the `ssh acl215` text/html 2020-07-04T21:02:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/vnc?rev=1593896566&do=diff Using VNC What is VNC? NOTE: VNC is deprecated. For all remote desktop access, we ask that you use X2Go (found here). VNC is a system for interacting with a computer display remotely, over a network. This technology was developed by AT&T Laboratories, and is now available for free over the internet (distributed under the GNU General Public License. Visit the text/html 2010-12-08T19:20:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/sysnews/inhouse/server_list?rev=1291836036&do=diff CS Servers Physical CS Department Servers Date Number installed Disks Space NAME type In Srv CPU & speed memory #xSize,type tot/used Function Pacific x3650 2007.1 Xeon 4x3gig 12gig 6x73g,sas text/html 2010-12-06T15:30:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/sysnews/kill_a_process?rev=1291649428&do=diff Monitoring and Killing Processes Any process you own you can kill (this is not a moral judgment, just a fact of life in Unix and Linux). Killing an offending process graphically If the machine itself is still responsive (but one or more windows perhaps aren't) you can try one of the Graphical Process Managers on our system.$$xfce4-taskmanager$$````````$$gnome-system-monitor$$```````` text/html 2009-10-14T17:24:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/sysnews/isohome?rev=1255541099&do=diff Backup to CD/DVD ---------- * * * * * * ---------- <BOOKMARK:quick> The really short version of the instructions If you just want to do this without delay and can get to the CS lab... * Bring a blank CD or DVD to the lab * text/html 2011-05-10T16:58:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/sysnews/ewc?rev=1305046736&do=diff Export a window to the Projector Please note, the instructor's workstation in room 105 has a resolution of 1280×1024, the student workstations have screen resolutions of 14450×900. Please resize any window you want to export to fit on the display where you are exporting it. ```````````````````````````````````````````````` text/html 2023-01-05T22:19:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/mitm?rev=1672957190&do=diff Host Key Verification Failed At some point you may attempt to SSH into a server, workstation or device, e.g. “my_server”, that you have logged into before and you encounter a long, scary message as follows that ends with “Host Key Verification Failed text/html 2022-08-31T12:49:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/sshkeysmswindows?rev=1661950198&do=diff SSH Keys on Microsoft Windows using the PuTTY Utility SSH keys are what you will use to establish an encrypted connection over the network, e.g. the internet, between your system and a remote machine. The default type of key to generate is RSA which is good for most purposes. RSA is universally supported among SSH clients. Note that EdDSA performs much faster and provides the same level of security with significantly smaller keys. In general, though, for what you need to do, RSA encryption is … text/html 2024-03-27T13:08:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/ssh?rev=1711544886&do=diff Accessing CS Systems The easiest way to gain access the Computer Science Dept. Linux machines outside of the Asprey computer lab. This gives you terminal access to the command line inside the department, and it allows you to send files back and forth to your home directory. Since it has no remote text/html 2016-05-18T16:17:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/linux_basics?rev=1463588248&do=diff Linux Basics Files, Directories and Paths * a file is a collection of data with a name (a filename to be precise). Although it may be stored in separate chunks in different location on the hardware, programs will generally work with a file as a single continuous collection of data. text/html 2016-05-18T15:53:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/info?rev=1463586832&do=diff Bash Shell Resources a few articles and tutorials on the web for learning the bash shell * <http://www.arachnoid.com/linux/shell_programming.html> * <http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html> * <http://www.panix.com/~elflord/unix/bash-tute.html> * <http://www.codecoffee.com/tipsforlinux/articles2/043.html> * <http://www.cyberciti.biz/nixcraft/linux/docs/uniqlinuxfeatures/lsst/> System Info - User Help ---------- Help for New Users Unix information and help Examples for … text/html 2020-07-04T20:59:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/filecopy?rev=1593896345&do=diff Secure Shell on macOS, Unix, and Linux Installation Any modern Unix-like operating systems should come with secure shell client utilities already installed. This is true for macOS, Ubuntu, Fedora, Mandrake Linux, FreeBSD and many others. If, however, you need a ssh client, you can download one from the openssh website: text/html 2023-02-20T17:02:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/command_please_not_found?rev=1676912542&do=diff Command 'Please' not found If you see this when you use SSH to log into a system Command 'Please' not found, did you mean: command 'please' from deb pleaser (0.5.1-4ubuntu0.22.04.1) Try: apt install <deb name> and each time you enter a command, this error message is displayed, then something is not right. This means you are logged into a system you should not be logging into but only using as a proxy or gateway. What is likely causing this is that you have some software configu… text/html 2023-04-06T14:19:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/possible_issues_with_remote_webui?rev=1680790785&do=diff Possible Issues when using the Remote WebUI 1. Why do I get bumped off after 4 - 5 hours? There is a time limit on the connection because several people have forgotten to log out and left their user home account files open and tied to remote system. Therefore a timer will kick you off after four or five hours to close all of your applications and files for you so that your files are not corrupted. Save your work often! Close all of your applications and disconnect or logout when you are done o… text/html 2011-05-05T19:17:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/sysnews/inhouse/using_the_pickup_script?rev=1304623047&do=diff Using the pickup script with your course What it is The pickup script is a companion to the submit script. Pickup allows you to place files for pickup in your course directories such that those files cannot be read by your students until they run this script. At that time an entry is logged showing the date, time, user and directory that was picked up. If your students attempt to kill the script (say, after it copies the files and before it logs that it has) that attempt will also be logged…