Copying Files to a USB Drive in Ubuntu

Copying Files to a USB Drive This guide is about copying files from a CAT loaded Linux computer to a thumb drive physically connected to the machine.   Using a File Explorer This is the graphical way to copy over your files if you aren't super Linux or terminal savvy. First, make sure [...]

2024-04-24T12:07:17-08:00April 24th, 2024|

Remote access to “high ports” on Linux now requires VPN

Starting Spring 2023, access to services running on "high ports" (ie: network ports numbered 1024 and higher) on remotely accessible MCECS Linux systems will be blocked to external users. You will still be able to ssh into those systems. However, if you are running any services (programs) on these systems that listen at high ports, [...]

2023-04-03T17:08:24-08:00April 3rd, 2023|

Run cpu/memory/disk intensive assignments on babbage

CS Users! Please run resource heavy programs on  - not ada ( Some clarification of the lore about ada and babbage, the two primary multi-user Linux systems available to CS students. (aka Used as a general workhorse.  Designed to handle users going through the edit - compile - execute cycles of general [...]

2022-10-10T22:54:16-08:00October 10th, 2022|

News for new and returning MCECS computer users in Fall 2022

The CAT has been busy preparing the computing infrastructure at MCECS for both onsite and remote users for the new academic year. Here are some of the highlights: The front page of the CAT website includes a “Back to Campus Toolkit” and updated “New (Attend Anywhere) Students” section, where you will find links to the [...]

2022-09-27T23:50:48-08:00September 27th, 2022|

Linux Home Directory permissions change – 10am on 10/12/2021

We will be making a slight home directory permissions change for all users on our systems. The end result will lock down access to user home directories so that only the owner of the account can access the files. We expect this to only affect a very small minority of users who have specifically opened [...]

2021-10-11T19:16:40-08:00October 11th, 2021|

Dealing with SSH Host Key Changes

Dealing with SSH Host Key Changes The CAT periodically updates the SSH host keys on its servers for security purposes, which can result in users seeing an error message similar to below when attempting to connect with an MCECS Linux system. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT [...]

2021-08-10T10:40:06-08:00August 10th, 2021|

Ruby and Rita SSH Keys changing – config changes will be needed

If you are a user of the following Linux systems, read on: At about noon on Monday, August 2nd, 2021, we will be changing the SSH keys on the Linux computers listed above. Anyone who has been logging into these systems on a regular basis will be greeted with a verbose “host [...]

2021-07-28T19:38:53-08:00July 28th, 2021|

Changes to SSH host keys

In an attempt to modernize our SSH infrastructure, we’ve made some changes to SSH keys on our Linux computers. We’ve disabled DSA host keys, and enabled new ECDSA and ED25519 host keys. This process took a few days, and during that time a few hosts had their keys changed. If you are experiencing problems trying [...]

2021-07-27T18:34:15-08:00July 27th, 2021|

Keep your guard up against Ransomware Attacks

As seen in recent headlines, institutionally targeted ransomware attacks are on the rise. The initial entry for these attackers seem to use many of the same techniques that we have seen in the past so it is becoming very important, as frequent computer users, to keep our guard up. This is particularly important for faculty, [...]

2021-06-07T18:53:30-08:00June 7th, 2021|


Virtual Network Computing, or VNC, allows you to create a remote graphical session on another computer . You will be able to observe a remote Linux desktop environment and interact with it using the mouse and keyboard from your own computer. Using VNC is attractive to many Linux users because you can temporarily disconnect from [...]

2021-09-20T11:45:59-08:00December 22nd, 2020|
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