Category Archives: SysAdmin

Installing git on CentOS

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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Cleaning Up Jammed Subversion Transactions

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

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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Git Tutorial

For the uninitiated, here’s a nice git tutorial at progit.org. You can download the current stable version of git at the git home page.

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ZFS on Linux

ZFS and Linux unfortunately collide. M. Tim Jones has a paper on IBM developerWorks called Run ZFS on Linux.  

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How to Set Up Viscosity for Windows for OpenVPN

Step-by-step instructions on how to install and configure Viscosity for windows. Continue reading

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Zimbra Tweaks

This is a list of the various little tweaks I performed on Zimbra. Continue reading

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Making ExpanDrive Work On New Macs

ExpanDrive and other products that rely on the MacFUSE toolkit do not work on MacBook Pros.
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Adding a GoDaddy SSL Certificate to Zimbra 7

These are the steps that I took to (finally) get Zimbra 7 to accept a GoDaddy-issued SSL certificate. Continue reading

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Automatic OS Updates in CentOS

How to tweak the yum dæmon to do automatic and semi-automatic updates. Continue reading

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