Installing Talend Open Studio For Big Data 5.5.1 on Redhat 6.4

September 20, 2014

Recently, Talend Open Studio For Big Data was recommended for me, so I thought I’d try it out.

But as I’ve so often encountered with Java on Linux, the install was a long process, full of java error stacks, google searches, research, trial and error, debugging, forum posts, and so on. Sigh, not again!

Here’s what I did to get Talend Big Data to install and work.  Big errors I encountered are detailed at the bottom.


Talend Open Studio 5.5.1

Talend Open Studio 5.5.1


Download Talend Big Data Software:

Read the rest of this entry »

Install Sqlite And Query Firefox Log Files Using SQL

September 10, 2014

Firefox saves a lot of log information in RDBMS files that can be queried in sqlite, using standard SQL commands.




To query the files, you have to have the right version of sqlite. Turns out that an old version was installed with my Redhat Linux 6.4 installation and I had to upgrade it in order to see the data. Here is how you can install the software and query the logs.


When I ran sample sqlite queries I found on the web, I got lots of errors:

sqlite3 ./cookies.sqlite 'select count() from moz_cookies'
Error: file is encrypted or is not a database

Read the rest of this entry »

Four Ways To Install Software On Linux

September 9, 2014

New to Linux?  Here’s some information that might be useful.

Linux is different from Windows in how software is installed. In Windows, starting with a CD, DVD, or an executable file, you run an executable file and install the software, usually via a GUI with prompts.


Redhat Desktop

Redhat Desktop


However, in Linux, there are at least 3 or 4 different ways to install software:

rpm packages
yum (related to rpm)
Unzip a file into a directory
Run an executable file or script   Read the rest of this entry »

Installing Gephi On 64 bit Machines

July 8, 2013

The instructions for installing Gephi can be found at:

They seem simple enough. But I found out that on a 64 bit server, it’s really important that you have a full 64/64/64 bit combination. That represents the operating system, Java, and Gephi. Here are some hints to get it right.


Be sure to download the right java file.   Read the rest of this entry »

Installing NVidia Drivers on Redhat 6.4 and Removing Nouveau

July 7, 2013

Recently I’ve been working with the graph database, NEO4J. Much of the usefulness of graph software is in visualizing it. So, I decided to install Gephi on Redhat 6.4. Gephi installed on Redhat easily enough. But it did not display the most important thing, the graph window!  :(

Gephi With No Graph Section

Gephi With No Graph Section

Debugging Gephi:

The Gephi website says:  “Gephi uses an OpenGL 3D engine to speed up graph visualization. However a compatible graphic card is required.”

Here’s how you can add some debugging to Gephi. Read the rest of this entry »

OBIEE BP1 SampleApp v207 on Virtual Box 4.2.12

July 6, 2013

You might have read of how long and complex it is to install OBIEE directly onto Redhat.

OBIEE SampleApp v207 Desktop

OBIEE SampleApp v207 Desktop

This year I heard that there was a new Virtual Box image of OBIEE. The idea being: you install and start Virtual Box, then use the OBIEE virtual machine. Great idea. You should be able to get on with actually using OBIEE, not struggling with its installation, startup, and administration.

However, that would assume that all the components work. Like any technology stack.

Unfortunately for me, they did not.

Installing Virtual Box 4.2.12 r84980:    Read the rest of this entry »

At Least Nine Ways To Identify Hard Disks

June 25, 2013

After writing the long post, Secrets of BIOS, Grub, and Triple Boot Servers, I still had some notes left over.

Here’s some more detailed info on the many different ways that hard drives are identified in my server using: Phoenix BIOS, ASUS BIOS 1006, Sept 1, 2008. There are at least 9 different properties or ways to identify them.

Disk Drive Model Name WD10 Hitachi WD400
Hard Disk 3 4 5
Fixed Disk 0 1 2
Sata Port 2 3 4
IDE 3 4 5
BIOS Boot Order 2 3 1
Grub HD? (hd1) (hd2) (hd0)
Operating System Windows 7 Redhat 5.5 Redhat 6.4
/dev/sd? /dev/sdb /dev/sda /dev/sdc

Make sense? Quick, how many can you recall?

Note: Redhat 6.4 is the main boot disk. After booting Redhat 6.4, the /dev/sd? is what is indicated by running fdisk -l. Please read the previous post for the details.

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