A recent update to the latest versions of Apple’s OS X, Lion and Mountain Lion removed the Java Preferences app and disabled the java browser plugin completely. If you need access to Java 1.6 from within the browser on a Mac (Oracle forms for example) this workaround will re-enable the older version of Java. You’ll need to have Apple’s Java installed as well as the latest Java 7 from Oracle before attempting the workaround. Once you have the required components installed follow the four steps in the workaround linked above and you should be able to use your legacy Java applications.
WARNING: By making this modification, you are opening a pandora’s box. If you do this, I would highly recommend using a script-blocking whitelist plugin such as NoScript (Firefox) or
Without the above, your browser will be vulnerable to drive-by attacks targeting the remaining bugs in Java 1.6. Apple’s fix was to disable this buggy and insecure implementation of Java. They may not produce updates for their current versions of Java in a timely manner, so beware!
This is a list of special requests (additions) and major changes to the master list of software installed in CS classrooms, (Long 217 – 221) for the Spring 2013 semester. Please be sure to make any requests by Wednesday, November 21st.
- GIMP (Christine)
- Kompozer (Christine)
- MIT App Inventor (Lancie)
- Android SDK/ADT (Lancie)
- MariaDB (George)
This is a list of special requests (additions) and major changes to the master list of software installed in CS classrooms, (Long 217 – 221) for the Spring 2012 semester. Please be sure to make any requests by Thursday, August 9th.
- DrRacket (Renee)
- ANTLR Works (Renee)
- Android support for Eclipse (George)
- JES, *221 only* (Brian Brumley)
I found a very helpful post by Jeff Schroeder on renaming ethernet interfaces on RHEL/CentOS, etc:
Jeff Schroeder January 15, 2009 at 1:50 pm
For those who don’t know, the Redhat/Fedora ifup/ifdown scripts that read the HWADDR variable are using the ip(8) command to set the names.
You can rename eth5 to eth0 like this:
ip link set down eth5
ip link set eth5 name eth0
Afterwards you’ll need to add an ip and up the interface with the ip(8) or ifconfig(8) commands.
This is very helpful when you clone a pre-configured virtual machine and don’t want the new VM to have it’s first ethernet interface named eth1. (instead of eth0 which is default)
There will be a planned network outage Sunday, May 13th (the day after
commencement) between 4:00 a.m. And 8:00 a.m. During this period access
to Stono from outside campus will be intermittent. Access to campus and
off-campus network resources from within the department will also be
intermittent during the maintenance window. (The cluster and all CS
virtual servers should remain unaffected by the outage) The outage is
necessary to allow IT Network Engineering to apply configuration changes
and improve service to the campus network.
On Macs & Windows PCs connected to the COUGARS Active Directory domain, you may change your password at a time of your own choosing to prevent being locked out. (particularly on the Mac) On either system make sure you’re logged out of MyCharleston. Change your password in Windows/MacOS and then log back into MyCharleston. Enter your previous password to allow Luminis to sync your account and all will be well again. (don’t forget to update your password on other software/devices that authenticate with COUGARS)
If you have a RHEL/CentOS install that waits ~15/20 seconds before presenting the shell prompt, (after you submit your password) you may have a name resolution issue on that system. If this situation is by design, (a firewall config, etc) there is a solution. Add the following line to your /etc/resolv.conf:
This option forces a fallback mode that will get rid of the delay and ignore the underlying name resolution issue. Thanks to Erinn at the University of Colorado for her helpful blog post!
The campus network is currently experiencing an issue that is causing SSH connections to slow down or time out. This is a known issue and IT is working to solve the problem. The issue is effecting both inbound and outbound SSH traffic.
Update: A rule has been added to increase the priority of SSH traffic to Stono. The College is experiencing heavy demand on both commercial internet connections. IT is in the process of procuring additional bandwidth and equipment to address the issue.
Network Engineering will be installing some much needed network upgrades in JC Long on Monday, December 19th starting at 5:00 p.m. The upgrades will cause a loss of network service to various parts of the building including the 2nd floor during the upgrade. The outage should not have an effect on our virtual servers (CS research servers, etc) or the cluster.
If you reinstall Windows or otherwise accidentally destroy your GRUB(2) bootloader, don’t worry. This is a fairly straight-forward problem to fix.
1) Boot from a live-cd or USB drive with the same or similar Linux distribution
2) Open a terminal and become a superuser. (“sudo su” for those that support it, “su” and the appropriate password for those that don’t)
3) Find the partition your operating system lives on, something like this:
fdisk -l /dev/sda
Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2581 20731851 83 Linux
/dev/sda2 2582 2647 530145 82 Linux swap / Solaris
4) Mount the partition in a temporary location, /mnt for example:
mount -t ext3 /dev/sda1 /mnt
5) execute the following commands and reboot:
grub-install --root-directory=/mnt /dev/sda
6) Check to make sure your grub config is ok on reboot. If not, edit your grub config file and rerun the “update-grub” command.