Archive for the ‘Linux’ Category

Adobe Air – Open URLs in default browser

For the last few days I’ve been fighting TweetDeck on my laptop trying to get it to open web pages in Opera. A small, but fast browser, from the Norwegian company with the same name.
At first I thought that Opera wasn’t my default browser in Gnome. I’m currently using Linux Mint, a distribution based on [...]

OpenWRT – Configuring VLANs and trunks

This weekend I decided to finally upgrade the firmware on my Linksys WRT54GL wireless router. The whole reason I bought this router a few years back was because it supported third-party firmware based on Linux.
Up until now, Linksys firmware has been working great. I didn’t need more than a simple wireless router. But recently I’ve [...]

Upgrading Ubuntu 6.06 LTS to 8.04 LTS

Today I upgraded from Ubuntu 6.06 to 8.04. The process was fairly painless thanks to a guide I found floating around on the Internet by Ronald Bruintjes. Thanks!
I thought about posting it here, but that wouldn’t be fair to the author. So, please visit his site for more information.
However, be prepared to answer some questions [...]

Filesystem mounted as read-only during boot

Today I had a case where a server mounted the root filesystem as read-only during boot. To make a short story shorter, check /dev/null.
After doing some searching in the logs I found a few lines complaining about /dev/null also being read-only filesystem. So I checked the permission with ls -al /dev/null, and it turned out [...]

NimBUS and Regular Expressions

I recently had to configure NimBUS to send alarm upon detecting a specific log entry in /var/log/messages on a Linux system. Because this alarm was supposed to be sent by SMS , I didn’t want it to send more than one message. But since our log file has a timestamp, each entry were we found [...]

Running Web Server as a Virtual Machine

For several months now I’ve been planning to virtualize my home server. That’s the server hosting this blog, among other things. For starters it would give me some more room to test different applications on separate operating system, but without the hassle of dealing with several physical computers.
One of my ideas is to test web [...]

Configuring Static Routes on CentOS 4

Last night we did some upgrades on a system in our datacenter. Among other things moving a few services from physical computers to virtual ones. One of these new machines needed contact with three different physical networks, and even more subnets.
If you don’t want to read about my whole example network, skip to the “fun [...]

Different Fan Behaviour on ThinkPad X61 than X31

Since I got my new Lenovo ThinkPad X61, I have discovered that the CPU fan is behaving rather differently than the one I have in my IBM ThinkPad X31. That is the fan makes a lot more noise when idle on the X61.
For the record. I’m running Ubunty Hardy (8.04) on the X61 and Ubuntu [...]

Ubuntu Hardy and Hibernate Issues

As I mentioned in my last post I had some minor problems with Ubuntu Hardy (8.04) and hibernation. It didn’t always work.
However it now seems like I might have overcome this problem. At first I thought it might had something to do with my docking station. Hibernating while docked, booting up while not and vice [...]

ThinkPad X61

A few days a go I ordered a Lenovo ThinkPad X61 with 2GB memory option, X6 UltraBase docking station and an optical drive. It arrived the very next day, on a friday, so you can imagine the impact this had on my weekend.
To be fair, the laptop isn’t exactly mine. It belongs to my employer, [...]