How to Effectively and Efficiently Edit Configuration Files in Linux


Every Linux administrator has to eventually (and manually) edit a configuration file. Whether you are setting up a web server, configuring a service to connect to a database, tweaking a bash script, or troubleshooting a network connection, you cannot avoid a dive deep into the heart of one or more configuration files. To some, the prospect of manually editing configuration files is akin to a nightmare. Wading through what seems like countless lines of options and comments can […] Continue Reading…

6 Things That Ubuntu Does Better Than Windows

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We all love Windows, right? It’s a great operating system, there’s no doubt about that. However, what if I told you that Ubuntu was better? You may laugh and think that nothing could possibly be better than your beloved Windows, but in this article we’re going to look at 6 reasons why Ubuntu is better than Windows.Some […] Continue Reading…

Dig into DNS: Part 4


Previously in this series (see links below), I’ve described the dig utility and its many uses in performing DNS lookups, along with several examples to help solve specific problems. In this final installment, I’ll look briefly at some security options and wrap up with additional examples.
All Secure Here
Many of you will have come across DNSSec in the past. It’s not an area that I have explored in great detail, I admit, but as you would expect the excellent […] Continue Reading…

Linux Foundation Certified System Administrator: Muneeb Kalathil


The Linux Foundation offers many resources for developers, users, and administrators of Linux systems. One of the most important offerings is its Linux Certification Program, which is designed to give you a way to differentiate yourself in a job market that’s hungry for your skills.
How well does the certification prepare you for the real world? To illustrate that, the Linux Foundation will be spotlighting some of those who have recently passed the certification examinations. These testimonials should serve […] Continue Reading…

How to Easily Roll Back Changes with Snapper


One thing a Linux sysadmin must know how to do is recover from a change gone bad. It happens. You install, upgrade, or configure a system or service and things immediately go wrong. What do you do? If you’ve made a copy of the configuration file, you’re okay. If the software didn’t install too many dependencies (which could have, in turn, caused a systemic issue), then you can simply uninstall. But, there are times when you will want […] Continue Reading…