Tonight I figured out how to use Firewall Builder, a GUI for creating firewalls (with iptables, in my case). The GUI is fairly easy to use and lets you quickly write very complicated firewall rules. I highly recommend this GUI.

I am so stupid. I wrote a bash script to shutdown a computer cluster. I wanted to run the script at a specific time, so I set up a cron job. I also wanted to test the cron job and was impatient, so I set it to run every minute. Now I have a computer that shuts off 1 minute after being turned on.

I didn’t think this was possible…It’s getting late on friday afternoon, I’m packing up my stuff to go out for dinner and a beer after work. I hit the power button on my laptop, but it doesn’t suspend…so I keep holding the button (I’m getting impatient at this point), and the computer does a hard power-off. It’s ok, I’m thinking as the guy next to me sees what has just happend and is laughing, because I’m using the EXT3 filesystem. But no, it’s not ok. Somehow my EXT3 linux partition becomes horribly corrupt. fsck can’t even fix it. So I bust out my Debian netinstall CD, and head down to the Thirsty Ear to drink.