Category Archives: Computer

Installing gitolite on a Mac

Posted on November 25, 2011 by James Reuben Knowles

How to install gitolite on a Mac. Continue reading →

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Resetting the iPhone

Posted on November 21, 2011 by James Reuben Knowles

iPhone suddenly shut down and was unresponsive, as if the battery were completely dead. Continue reading →

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Get PyDev Eclipse to Find zmq

Posted on September 26, 2011 by James Reuben Knowles

If correctly installed, Python on the OS X has no trouble finding the ØMQ Python bindings. However, the Eclipse PyDev by default will not locate the zmq library within the Eclipse IDE. Therefore, if you include the following in your … Continue reading →

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OS X, Apache, Tomcat, and mod_jk

Posted on September 23, 2011 by James Reuben Knowles

I spent some time with a colleague from South Africa yesterday. He’s a long-time Windows user that writes in Java. He has a new MacBook Pro, and we scratched our head why Apache+mod_jk+Tomcat was blowing up on him. JAVA_HOME The … Continue reading →

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git Over A Non-Standard ssh Port

Posted on September 7, 2011 by James Reuben Knowles

git speaks ssh over the standard port 22 out of the box, and flawlessly. For example: git clone git@hostname:repository_name There are a fair number of installations running ssh on non-standard ports, however, and the above method doesn’t directly support a … Continue reading →

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Installing git on CentOS

Posted on September 7, 2011 by James Reuben Knowles

git is available as an EPEL package. First, activate EPEL via $ sudo rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm NOTE:That exact URL will change with time. I took it from the EPEL FAQ. Next, install the git package. $ sudo yum install git

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How to Reveal Hidden Files and Folders in a Mac OS X File Dialog

Posted on September 7, 2011 by James Reuben Knowles

It turns out that there is an undocumented (or poorly documented) key combination to show and hide hidden folders and files. Press Command-Shift-Period (⌘⇧.) to toggle hidden files and folders on and off. Continue reading →

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Cleaning Up Jammed Subversion Transactions

Posted on August 26, 2011 by James Reuben Knowles

There was a very odd server failure while a big Subversion commit was in process. (The ISP hosting the server is kind of flaky.) To clean up the leftover files from the failed transaction, I did this: $ svnadmin lstxns … Continue reading →

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DHCP Lease Time Optimization

Posted on July 29, 2011 by James Reuben Knowles

Setting DHCP lease times is in practice pure voodoo. I ran across a paper presented in 2007 on research into DHCP lease times at Georgia Tech’s student network called Usage-Based DHCP Lease Time Optimization. While the paper on the whole … Continue reading →

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Eliminating Multi-Threading Headaches

Posted on July 21, 2011 by James Reuben Knowles

I first touched parallel processing as an undergrad. I was selected to for a summer research program that tackled different aspects of parallel processing using transputers. They broke us into teams and I was put on the parallel debugging team. … Continue reading →

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