MySQLTuner

About a year ago, I was introduced to the joys of using irssi and screen to access irc servers. Before that time, I’d usually used graphical clients like Colloquy, and I always enjoyed getting Growl notifications when someone mentioned a word or string that I set up as a trigger. Once I started using irssi [...]

Thanks to a recommendation from Michael and Florian, I’ve been using dsh with a lot of success for quite some time. In short, dsh is a small application which will allow you to run commands across many servers via ssh very quickly. You may be wondering: “Why not just use ssh in a for loop?” [...]

One of my favorite (and most used) applications on any Linux machine is screen. Once you fire up a screen session, you can start something and keep it running indefinitely. Even if your internet connection drops or you accidentally close your terminal window, the screen session will remain open on the remote server. Detaching from [...]

Happy New Year! I certainly hope it’s a great one for you, your family, and your business. As the new year begins, I figured it would be a good time to sit down and answer a question that I hear very often: How do I become a better systems administrator? The best way to become [...]

I upgraded a Fedora 11 instance to Fedora 12 and found the following error at the top of one of my Wordpress blogs: Parameter 1 to update_comment_type_cache() expected to be a reference, value given in wp-includes/plugin.php on line 166 The ... [More] problem wasn’t in a plugin, actually. It was within my theme’s (R755-light) functions.php: function update_comment_type_cache(&$queried_posts) { The temporary [...] [Less]

If you haven’t upgraded your Wordpress installation to version 2.9 yet, you might want to consider doing that soon. There are quite a few improvements, bug fixes and security features available in the new version. The automatic upgrade via the admin interface actually worked just fine for me. Of course, I backed up my [...]

I try to keep up with the latest kernel update from kernel.org, but parsing through the output can be a pain if there are a lot of changes taking place. Here’s a handy one-liner to make it easier to read: wget --quiet -O - http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.8 | grep -A 4 ^commit | grep -B 1 "^--" [...]

As with the Fedora 10 to 11 upgrade, you can upgrade Fedora 11 to Fedora 12 using yum. I find this to be the easiest and most reliable way to upgrade a Fedora installation whether you use it as a server or desktop. To reduce the total data downloaded, I’d recommend installing the yum-presto package [...]

Edit: After further research, I found that this fix only adjusts the speed at which your mouse moves. It doesn’t do anything for the acceleration curve. I recently picked up a Magic Mouse and discovered that I like almost all of its features. The biggest headache is the funky mouse acceleration curve that it [...]

If you want your iptables rules automatically loaded every time your networking comes up on your Debian or Ubuntu server, you can follow these easy steps. First, get your iptables rules set up the way you like them. Once you’ve verified that ... [More] everything works, save the rules: iptables-save > /etc/firewall.conf Next, open up /etc/network/if-up.d/iptables in your favorite [...] [Less]