Weird ZFS misbehaviors

(spoiler: on one of my machines, I run ZFS off a LUKS-encrypted device. I know this is sub-optimal, but at the time it's working okay for me). I try to host as much of my core services as it is reasonable to (without it becoming a second part-time job). Part of this means that I… Continue reading Weird ZFS misbehaviors

I’ve got too many computers

Oh boy, I should have seen this coming. I'll be moving shortly. Same city, just hopping from a flat to another. I am packing things around and one by one I had to touch all the computers I have accumulated during the last five years that I've spent in this house. They're just too many… Continue reading I’ve got too many computers

A Linux development environment on Mac OS

I've been given a Macbook Pro at work. It was actually my choice, since it was the only machine with an US keyboard layout, 16 gig of ram and last but not the least, the easiest way not to use Windows and have a Unix environment at my fingertips. It's not too bad, but I'll… Continue reading A Linux development environment on Mac OS

Installing VirtualBox-6.0 on CentOS 7.5

This is a quick set of notes about the installation of VirtualBox-6.0 on CentOS 7.5. This OS is not explicitly listed on VirtualBox's website, so.. Reference page: . Install the appropriate key: sudo yum install -y wget wget -q -O- | rpm --import - (You might want to change the wget command to… Continue reading Installing VirtualBox-6.0 on CentOS 7.5

Passing Red Hat’s RHCSA certification (EX200): my experience

Just a week ago I passed the Red Hat Certified System Administrator exam, and here are some brief notes about my experience. Why the RHCSA certification? At first I didn't plan on taking the exam at all. But I have been using pretty much Debian/Xubuntu only for a long long time and for the last… Continue reading Passing Red Hat’s RHCSA certification (EX200): my experience

On commenting code: external vs internal documentation

In my day job, I sometimes have to write scripts in order to automate things that either happen too often to be handled manually or need to be handled in the shortest amount of time possible.But more often, I am tasked with modifying the behavior of an already existing script and/or adding new functionalities.Needless to… Continue reading On commenting code: external vs internal documentation

Learn how to use GNU info

Recently I've been digging a lot into GNU/Linux system administration and as part of this, I have finally taken some time to google about that mysterious info command that has been sitting here in my GNU/Linux systems, unused for years. Well, I can tell you, it has been a life-changing experience. Texinfo-based documentation is awesome.… Continue reading Learn how to use GNU info