How to switch between installed Java VM in Ubunutu

Java Mascot

Imagine you have installed both IcedTea and Oracle (Sun) JVM and you want to switch to Sun JVM from IcedTea. This can be done with command 'update-alternatives --config java' as root.

Install w3af 1.0 in Fedora - Python-svn Dependancy Solving

Famous web application testing tool kit 'w3af' released a stable version on 25th May 2011. How ever when I run w3af-gui, it tells it needs 'python-svn' and suggest to run apt-get install python-svn.
In a fedora based system 'yum install python svn' will not work since package comes with a different package name. Therefore to install python svn, 'yum install pysvn' should be issued.

How to install Clementine Music Player for Ubuntu 10.04 Lucid

Clementine is a multi-platform juke box type music player which is inspired by Amarok 1.4. But to install it to Lucid Linux (Ubuntu 10.04) small procedure has to be follow.

The 'apt-get install clementine' will not work because clementine repository is not default available in Lucid Linux.

Installing Broadcom 43xx Wireless Drivers after Kernel Update in fedora

Broadcom Logo

After a kernel update in Toshiba Satellite laptops which are running on fedora may lose the wireless network capability which is based on Broadcom chips. Even drivers are available from RPMFusion repo, it will take couple of days to update drivers with newly released kernel. Best option is compling the driver as following steps which gives wireless capability instantly.

Step 1:
Run 'lspci | grep -i broadcom' in terminal to make sure wireless hardware is there.

[kasun@katalyst ~]$ lspci | grep -i broadcom
02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g LP-PHY (rev 01)
[kasun@katalyst ~]$

Open DNS Phishing Protection

Open DNS Logo

As a Linux user, since there is not reputed Virus Guard (Even troublesome SELinux is there) or URL filtering is not done, there is a more chance you deal with phishing URL. In windows many AVs prevent phishing and scam URL. In this case best option is using a DNS level filtering. In most cases ISP's DNS will not offer this sort of protection. Therefore best option is switch to Open DNS.
Open DNS name servers are

• 208.67.222.222
• 208.67.220.220

How to fix Oracle VirtualBox Ubuntu 11.04 Unity Hardware Requirement Issue

Oracle VirtualBox VM boot Screen

Unity is the new desktop package which is included in Ubuntu 11.04. How ever this makes small problem to VirtualBox testers for Ubuntu. It gives small error contains hardware is not support and Unity is kept disabled.

How to fix kdenlive - mlt update problem in fedora 14

Today Update Applet indicated me there are updates for fedora kdenlive package. How ever it gave problematic output for 'yum update' command as follows.

[root@katalyst kasun]# yum update
Loaded plugins: auto-update-debuginfo, langpacks, presto, refresh-packagekit
Adding en_US to language list
Found 36 installed debuginfo package(s)
Enabling fedora-debuginfo: Fedora 14 - x86_64 - Debug
Enabling rpmfusion-nonfree-debuginfo: RPM Fusion for Fedora 14 - Nonfree - Debug
Enabling rpmfusion-free-updates-debuginfo: RPM Fusion for Fedora 14 - Free - Updates Debug
Enabling rpmfusion-nonfree-updates-debuginfo: RPM Fusion for Fedora 14 - Nonfree - Updates Debug
Enabling rpmfusion-free-debuginfo: RPM Fusion for Fedora 14 - Free - Debug
Enabling updates-debuginfo: Fedora 14 - x86_64 - Updates - Debug
Setting up Update Process
Resolving Dependencies