The problem
I have a couple of computers with identical hardware configuration. I used one of them to install Ubuntu server to new hard drives. After I completed the preparation of all hard drives and installed the m to other machines. The problem came. Everything works fine except the network. eth0 has problem.
The solution
This solution [...]
Dec
23
2009
23
2009
Fix network configuration problem
Dec
5
2009
5
2009
Useful applications for Windows Mobile 6.1
Recently I upgraded my Verizon Wireless mobile phone to Windows Mobile Smartphone XV6800. I like it very much because I can do a lot of things on it. The most useful function of this phone is accessing WiFi hotspot. Here I’d like to summarize how I configure it to connect to my home WLAN, access [...]
Nov
21
2009
21
2009
VirtualBox, a useful tool to experience other OS
When I search information about Google Chrome OS, I find a very useful software – VirtualBox. Although I did not get much information about Chrome OS, I was pretty happy to have the VirtualBox.
I downloaded the latest version V3.0.12 and installed it in my Windows machine. I want to try Ubuntu in the VirutalBox and [...]
Nov
19
2009
19
2009
Gene network visualization
Cytoscape is an open source bioinformatics software platform for visualizing molecular interaction networks and biological pathways and integrating these networks with annotations, gene expression profiles and other state data. The following is a snapshot of the sowtware interface.
The current version of the software is v2.6.3. The core features of Cytoscape include data integration, visualization, and [...]
Nov
14
2009
14
2009
Install and config Subversion on Ubuntu server
Install SVN server on Ubuntu server
I am trying to install a subversion server on my Ubuntu server. Google search returned a lot of garbage. It was pretty hard to locate a good tutorial or how-to document to follow. At least I found one at ubuntu.org.
Subversion – This wiki document explains how to setup Subversion alias [...]
Nov
14
2009
14
2009
Add USB hard drives to Ubuntu server
I have a Ubuntu file server with limited storage space. I want to add a USB hard drive to extend its storage space. I did it in the following step.
Plug in the USB hard drive to the Ubuntu server
After I plugged the USB hard drive, the server was rebooted. Then I check the device table [...]
Nov
11
2009
11
2009
A new programming language – GO, from Google
Google just published a new open source system programming language, GO. Google claims that it is simple, fast, fun, safe, and concurrent. Source code can be downloaded and compiled. It provides a lot of packages. My first look gave me feeling that it is pretty similar to Java or C#. It is a system language [...]
Nov
9
2009
9
2009
Tools to switch on/off services of Ubuntu Linux
In GUI environment you can use System > Administration > Services to switch on/off services.
In CLI environment you can use rcconf to do the same thing.
apt-get install rcconf
rcconf
For detail information, please refer to the following article.
Ubuntu Linux stop / disable GNOME GUI ~ X.org
[...]
Nov
9
2009
9
2009
Nov
7
2009
7
2009
Use munin to monitor Ubuntu server performance
munin is a light weight server monitoring tool. After I read the following two articles I decided to give a try. Here are the links for the articles:
Monitor Servers and Clients using Munin in Ubuntu
Monitoring systems with munin
The setup is a piece of cake. I have a little bit confusion when I setup allow IP [...]
Block junk comments in WordPress
Recently I found that there were so many junk or spam comments posted in the site. The possible reason is some spam robots were keeping booming this site. To block the spam comments and reduce the waste of resources, the following settings in Discussion section were selected.
Comment author must fill out name and e-mail
Users must [...]