Archive for November, 2010

What are your favorite technical books?

My technical book collection has grown quite large, though there are only a few books I go back to time and time again. I just took Self Service Linux and Linux Kernel Development off my shelf, and am planning to re-read both books over the Thanksgiving holiday. Self Service Linux is hands down one of […]

How I am going to avoid getting stranded when my car has a dead battery or flat tire

Having lived in a big city for the past 10-years of my life, I’ve encountered a number of unpleasant things when I’ve been out and about. A few weeks back I hit one of the most frustrating ones of my life when a nail punctured one my tires while I was running errands. This shouldn’t […]

Numerous updates to the SSL certificate expiration program

With the help of various contributors, I’ve integrated some new features and a number of bug fixes to ssl-cert-check over the past couple of months. If you aren’t familiar with this tool, it’s a bash script that you can use to notify you prior to your certificates expiring. You can read more about the script […]

Getting gnome to work after an initial CentOS installation

While preparing for my RHCE exam, I wanted to install of the system-config-* GUIs to see what functionality they provided. I used the yum groupinstall option to install the GNOME desktop: $ yum groupinstall ‘GNOME Desktop Environment’ and then proceeded to add my preferred desktop environment to /etc/sysconfig/desktop: $ cat /etc/sysconfig/desktop DISPLAYMANAGER=”GNOME” Once these items […]

What I did to pass the RHCE exam

I took the RHCE exam this past week, and was fortunate to pass both the RHCT and RHCE sections with a score of 100%. While I can’t discuss what was on the test, I figured I would share the process I used to prepare for the test. When I decided to take the exam, I […]

Firewalling a Linux NFS server with iptables

When it comes to firewalling services, NFS has to be one of the most complex to get operational. By default the various NFS services (lockd, statd, mountd, etc.) will request random port assignments from the portmapper (portmap), which means that most administrators need to open up a range of ports in their firewall rule base […]

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