https://www.cs.vassar.edu/ 2026-04-18T15:29:59+00:00 https://www.cs.vassar.edu/ https://www.cs.vassar.edu/_media/favicon.ico text/html 2015-08-26T20:52:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/backups?rev=1440622373&do=diff FIXME update, convert to wiki, add link to isohome Backup With Tar ---------- * Overview * Creating a tar file of your entire directory * Copying the file to another location * Tar Documentation ---------- Overview While I make regular backups of the home directories on the Computer Science Unix machines, there are times when you want to have your own copy of your account. There are several relatively painless ways to accomplish this task. I will describe one of them here. If you n… 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 2022-09-02T18:02:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/account.size?rev=1662141739&do=diff Account Size Here are a few tips for managing the size of your Computer Science Unix account. How Much Space does My Account Use? du -s -h /home/YOUR_ACCOUNT_NAME This command will give you your total account size. The “-h” stands for “human readable 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 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 2023-02-14T20:09:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/forwarding_x11?rev=1676405365&do=diff Forward X11 Very few systems here are configured to forward X11 via SSH. And this will generally be reserved for request by the faculty and not for classroom computers. If you require a GUI environment then you are strongly encouraged to use the Guacamole server by logging in at text/html 2023-03-06T19:51:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/jump?rev=1678132316&do=diff SSH Proxy Jump (Might as Well Proxy Jump!) Announcement (March 06, 2023) As of March 06th, 2023, direct internet access to the CS Department bastion servers is no longer allowed. If you want to access these bastion servers then you need to be on the text/html 2019-05-24T11:55:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/windows?rev=1558698954&do=diff Secure Shell on Windows Installation To log in to the CS Department computers, you will need a SSH client. There are several free SSH clients available for Windows. We have used PuTTY with great success. We have also used WinSCP to copy files between Windows and Unix computers. 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 2023-01-19T02:50:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/sshkeys?rev=1674096627&do=diff Setting up SSH Keys Note : This tutorial assumes that you are running a linux-based operating system. The procedure for setting up keys on an Apple Mac OS X machine is similar to this procedure, but you may need to make some minor adjustments. There is a separate text/html 2022-10-26T13:47:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/opensshformswindows?rev=1666792022&do=diff OpenSSH On MS Windows OpenSSH is the open-source version of the Secure Shell (SSH). OpenSSH was added to Windows 10 (build 1809 and later). This means that you can open a MS Windows Command Prompt window and run any of the SSH tools from the command line in MS Windows. Therefore you don't need to use PuTTY if you don't like that tool. OpenSSH for Windows has the following commands built in text/html 2025-06-27T18:51:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/priority?rev=1751050267&do=diff System Priorities Priorities of programs are something to be aware of. PS The first thing to do is to get to know your processes. The ps command lists out the processes you have running on the system. By using ps -l, an extended listing of your processes is provided. The fields of the most interest to this topic are the PID, NI, and COMMAND fields. The COMMAND field lists the name of the command that started your process. So, if you're looking for your runaway c++ program, a.out is the one yo… text/html 2024-04-30T14:38:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/printing?rev=1714487890&do=diff Setup To enable the printer, on the linux cmd line: * cd ~ * mkdir .cups * cd .cups * echo 'User 999nnnnnn' > client.conf (ensure that single quotes are used your 999 is entered) * chmod 400 client.conf (ensure that you can only read the file) 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 2022-10-28T18:01:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/jetbrains?rev=1666980095&do=diff JetBrains IntelliJ License When you start or launch any JetBrains software installed on a lab, classroom or office computer managed by the Computer Science Department, the computer is configured to look for our local, JetBrains license server to request a license for that software. 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 2021-03-04T00:22:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.cs.vassar.edu/help/general_linux/x2go/apple?rev=1614817344&do=diff X2Go macOS Installation <https://www.xquartz.org/>may * Step 1: <html><a href=“<https://code.x2go.org/releases/binary-macosx/x2goclient/releases/4.1.2.2/>” target=“blank”>Click here for the latest version</a></html> to go to the download page for X2Go. <html><a href=“<https://code.x2go.org/releases/binary-macosx/x2goclient/releases/>” target=“blank”>Click here for the previous versions.</a></html>