Posted on in Programming
I usually start my posts off with an image that is relevant to the post. I think it adds a bit of drama to what I'm writing about, and it also gives me a nice place to anchor a link to a WordPress tag about the subject. I had this …
Posted on in System Administration
Clearing the Windows DNS Server cache from the command line is an easy task.
C:\> dnscmd . /clearcache
The . indicates the local DNS server. You can use this command to clear the
cache of remote DNS servers by replacing the . with the hostname or IP address
of the remote server.
Posted on in Software
Oracle announced the release of VirtualBox 4.0.4 today. This maintenance release addresses many bugs experienced by hosts of all operating systems. You can find a full list of fixes and additions in the Changelog.
I use VirtualBox on both my Macs for my various testing needs. If you've …
Posted on in Networking
For those that don't follow the ARIN Public Policy Mailing List, the following is excerpted from a post by Thomas Narten in response to the announcement that the <acronym title="Internet Engineering Steering Group">IESG</acronym> has approved a new document to replace the existing RFC 3177 (IPv6 Address Assignment …
Posted on in Software
One of Gmail's greatest features is its spam filtering. But, if you have a situation where you want to forward mail from multiple Gmail accounts to a single location, that fantastic filtering becomes a little cumbersome. In this situation, having junk mail sitting around in multiple Gmail accounts is actually …
Posted on in uncategorized
As you might be aware, WordPress 3.0.2 has been released to fix a specific security vulnerability. This vulnerability required an attacker to have author-level privileges on a WordPress installation. This has led to a rash of new Slaptijack users to be created with the hopes of gaining author-level …
Posted on in Networking
If you've used Cisco switch clustering in a basic network (for example, when all switches are connected together and <acronym title="Cisco Discovery Protocol">CDP</acronym> is enabled), you've likely never considered how this switches communicate with each other. You might assume that the switches are using IP addresses from …
Posted on in System Administration
Yesterday, Red Hat announced the release of Red Hat Enterprise Linux (RHEL) 6. For those of us interested in virtualization, RHEL brings along many changes.
RHEL 6 promises enhanced virtualization performance in several ways. First, the operating system is now theoretically able to handle 4,096 CPUs, 16 TB …
Posted on in Software
Red Hat finally announced the release of Red Hat Enterprise Linux (RHEL) 6 yesterday. RHEL 5 was released in early 2007, making the wait for RHEL 6 the longest since Red Hat rebranded their Linux-based operating system with the RHEL moniker in 2003.
RHEL 6 boasts tons of new features …
Posted on in Networking
For those that have been using Cisco IOS 12 forever, you may not have realized that Cisco has begun rolling out IOS 15. Although there are a lot of technical changes and features that are being introduced, IOS 15 introduces a new licensing scheme that may throw old users for …
Posted on in Programming
Occasionally, you may run across a date in a format that can't be easily loaded into a Python date object. For example, I recently had a situation where a file I was parsing was full of dates in this format: 7/7/2008.
The obvious thing to do here is …
Posted on in System Administration
If you're using a non-standard MySQL data directory on your Red Hat Enterprise Linux (RHEL) server, you may have seen an error like /usr/libexec/mysqld: Can't change dir to '/mysql_data/' (Errcode: 13). The key to fixing this problem is to ensure the new MySQL data directory has the proper …
Posted on in Software
Oracle's VirtualBox 3.2.10 was released today. This another maintenance release for 3.2 that includes a wide variety of bug fixes. Check out the Changelog for more details.
I use VirtualBox on both my Macs for my various testing needs. If you've got a favorite desktop virtualization program …
Posted on in Information Systems
The Rural Utilities Service (RUS) and National Telecommunications and Information Administration (NTIA) have announced through their respective websites that all applications selected to receive a reward under the American Recovery and Reinvestment Act of 2009 have been notified. This officially concludes the application and selection process. For those of us …
Posted on in voice
In Asterisk 1.4 and above, you can dynamically add and remove queue members from
an extension or the command-line interface (CLI). Although you will most likely
do most of your adding and removing via extensions, you might also find it helpful
to remove a queue member by hand on …
