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CentOS 6 now includes eCryptfs which provides the ability to encrypt data and files on a per-file basis instead of the entire disk as in block encryption. The eCryptfs system sits on top of the current file system to provide the encryption layer, that is why it is known as the pseudo-file system. The file operations which are sent to the underlying file system are intercepted by eCryptfs and encrypted.

This is an example of a Bash shell script used to loop through a list to compare to text strings found in logs. The script is used to detect and block attacks on a web site.

The universe that contains GNU/Linux and Free Software rarely slows down for simple things such as holidays. This week proved to be no exception. Rex talks about WebOS being open-sourced, The FCC, and Red Hat's record breaking quarter.

I have spent the last couple of weeks working on a very ambitious C++ program. The program is a software model of a mechanical engineering system. I have never undertaken a more challenging or more rewarding computer programming project. As I spent hour after hour poring over the code, I began to realize why everyone is making such a fuss about HTML 5.

Kris Occhipinti is currently in the middle of creating a 2D game created using the Blender 3D game engine. The game, called Pissed Off Penguins, looks similar to the popular “Angry Birds” game most of you have likely heard about. I wanted to outline this open-source project and expose some of the unique techniques Kris is using to both fund this project and create the game itself.

This week features some fantastic GNU/Linux stories; A Richard Stallman Lookalike, Linux Experts Have No Problem Finding a Good Job, a Donation Directory is Born.

The final part of our installation jigsaw puzzle is to create the answer file, in SUSE this is known as AutoYaST. If we were only ever to install one server or one desktop then maybe we could do without answer files; however where we need to install a few or many then AutoYaST provides us with an unattended installation:- a build script to create consistency and compliance we regulatory bodies governing security. In short we need answer files.

There are a lot of new options to explore in CentOS 6 during install, be sure that you have a basic understanding of what the options are before you begin the installation. One important aspect is to understand what type of hardware will be used for the server, hardware or software RAID, LVM, ext3 or ext4, etc.

The Linux command diff can be used to create a script that will list the differences between two directories. This comparison is often very useful when writing scripts.

Ubuntu now has Deja Dup installed by default. Deja dup allows you to backup Ubuntu quickly, easily and automatically.

Chris DiBona recently showed the antivirus software industry who’s boss. He slapped them around like the proverbial red-headed step-child. Kudos to Mr. DiBona for being one of the few industry giants with the chutzpah to speak the truth; a truth thought by many, but one that most would NEVER publicly voice. Libreoffice is built on the hard work of great supporters who create a lot of wonderful tools for the office suite, usually voluntarily. The Ipad 2 is a great device with very poor support for free software. Finally, Linux Mint has risen to the front of the GNU/Linux queue.

The Bash shell has a builtin test command that can be used to check for multiple aspects in a script. This exercise helps you build a script that checks to see if a file exists and if it does, checks to see if it is writable.

Adjusting the default rule numbers on Spamassassin is an important way of keeping up with Spam variations. Protect your mail by more aggressive Spam rules.

The builtin command test can be used to evaluate integers using relational operators.

The Haraka mail server is able to use common plugins like Spamassassin to enhance the features that it provides. Using Spamassassin with Haraka is easy to do and reduces the normal resources used by a mail server.

In The Linux Week in Review 25, I will reveal my thoughts, both good and bad, about Apple’s extremely popular tablet. I will also reveal how the GNU/Linux community could create a hardware/software ecosystem that could dethrone the Ipad.

Setting up the Haraka mail server to accept mail into a queue. This is the second in a series on how to configure and use this unique mail server.

Currently the CentOS 6 packages need to be supplemented from other repos in order to install many perl modules for example. Unfortunately, the RpmForge repo is behind so you will need to add the Epel repo as well. If you do this be sure to use yum priorities to help sort it all out.

After years of holding the top spot on the Linux desktop leaderboard it looks as if Ubuntu is starting to slip.

Many Linux mail servers use clamav to scan for viruses. This application is dependable and has a history of updating virus rules quickly as new viruses are discovered.