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The Coming HTML 5 Revolution in Linux |
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| 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. read more... |
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| | permapage | score:9715 | -aweber, December 13, 2011 |
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The Debate OS Project |
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| Today I ran across another open-source Kickstarter project that I thought was worth sharing. The project, called Debate OS, is an Ubuntu spin focused on providing a debate environment for high school and college students. read more... |
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| | permapage | score:9693 | -aweber, December 15, 2011 |
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Pissed Off Penguins: A Free Game Project |
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| Kris Occhipinti is currently in the middle of creating a 2D game 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. read more... |
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| | permapage | score:9660 | -aweber, December 11, 2011 |
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Understanding SELinux |
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| A task of any operating system is to provide software that strongly increases its security. A lot of programs of this type have been created; some are better than others. read more... |
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| | permapage | score:9517 | -aweber, March 25, 2013 |
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Postfix: SMTP Options with Webmin |
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| Webmin can be used to create and edit mail aliases which can be used to send mail to individuals, groups, lists or even applications. Webmin is a web based front end used for monitoring Linux servers which have no GUI. read more... |
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| | permapage | score:9302 | -aweber, August 29, 2012 |
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String matching in regular expressions |
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| Use parentheses to create the string matches you need in regular expressions. Parentheses allows you to use pipes for multiple matches. read more... |
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| | permapage | score:9240 | -aweber, September 12, 2011 |
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Nagios 2012 World Conference |
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| The Nagios 2012 World conference starts today and one of the major events of the conference will be the demonstrations of the Nagios 2012 interface by Ethan Galstad. I have been running the beta for several weeks in the Nagios Training classes and the response has been very favorable about the new features. Here is a list of a few to look for. read more... |
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| | permapage | score:9229 | -aweber, September 27, 2012 |
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Using Git for Source Control |
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| GIT is the source control tool, a distributed version control system (dvcs) which is written in C. This provides a history of the files that are maintained by it. In distributed version control each user has a complete copy of the code so there is no central code repository. In this scenario an administrator makes changes, adds them to the index (called staging) and then adds them to the repository (called commit). Git will take this information and maintain a version history that users can track. This is all performed locally but could be synchronized with a remote repository. read more... |
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| | mail this link | permapage | score:9130 | -aweber, May 5, 2012 |
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Sustitution with sed |
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| The Linux utility sed provides a great way to substitute text strings in a file. Using the "s" option and by listing the current string and the string to use as the new text allows sed to perform this task. read more... |
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| | permapage | score:9129 | -aweber, August 3, 2011 |
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Bash: Use the Test Command for multiple aspects |
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| 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. read more... |
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| | permapage | score:9104 | -aweber, December 4, 2011 |
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Debugging Shell Scripts |
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| Learning how to find the errors in your shell scripts is an important skill for successful shell scripting. The debug options in the Bash shell can help with that. read more... |
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| | permapage | score:9098 | -aweber, February 2, 2012 |
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Bash log file scanning |
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| The idea behind a log parser is to create a loop that will check all of your required logs to return information about specific needs that you may have as an administrator. For example, with this script you may want to search a specific log for one or two text strings that are very important to the function of your system. read more... |
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| | permapage | score:9065 | -aweber, March 3, 2011 |
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Beginners Guide To Ubuntu One Personal Cloud |
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| Ubuntu, the leading desktop Linux distribution, has been looking at ways to add value to its offering for a while. The maturing Ubuntu One personal cloud service is just such an enhancement – but is it any good? read more... |
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| | permapage | score:9025 | -aweber, November 9, 2012 |
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Installing NRPE on FreeBSD 9.0 |
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| The NRPE daemon provides a way for Nagios to monitor the internal aspects of a FreeBSD box. This article will take you through the steps for installing NRPE on FreeBSD. read more... |
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| | permapage | score:9017 | -aweber, March 17, 2012 |
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Bash Functions |
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| Functions are scripts within scripts in Bash that can be used to increase speed, save on resources in a script and provide reusable information since it is stored in memory. Functions must be declared before they can be used in the Bash shell script. read more... |
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| | permapage | score:9015 | -aweber, July 6, 2011 |
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Install Dovecot 2 on CentOS |
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| Dovecot 2 has new features, including security enhancements that administrators may want to use on CentOS. However, this version of Dovecot is not in the repository so you will need to install several additional packages. read more... |
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| | permapage | score:9014 | -aweber, March 26, 2011 |
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HP Redstone Servers, Open Source textbooks, Netflix on Linux |
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| GNU/Linux and free software are a boon to a lot of businesses, and a thorn in the sides of others. Both the friends and enemies of Linux are realizing that Linux is important, and that it is here to stay. HP is leveraging Linux to try to return from the brink of financial ruin. As colleges and other schools around the country teeter on the verge of bankruptcy, many are moving to open source textbooks as a lower cost alternative. Free software is freeing people from the shakedown that is cable television. Finally, Microsoft has broken down and contributed code to a GPL version 3-licensed project. read more... |
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| | mail this link | permapage | score:9011 | -aweber, November 9, 2011 |
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Troubleshooting Mail on Nagios XI |
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| Email management and troubleshooting can be a challenge as there are so many options and configuration choices that can get twisted. read more... |
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| | permapage | score:9001 | -aweber, November 5, 2012 |
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Tutorial: PostfixAdmin and Fetchmail |
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| Have you ever wanted to move mail from an old account to a new account? This tutorial will show you how to use fetchmail with PostfixAdmin. read more... |
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| | permapage | score:8964 | -aweber, September 3, 2010 |
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Automate install with AutoYaST answer files |
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| 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. read more... |
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| | permapage | score:8957 | -aweber, December 8, 2011 |
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