Ubuntu: The Default Choice, and When It Should Not Be
How Ubuntu's release cycle and support windows actually work, what snaps are and why people argue about them, and an honest account of who Ubuntu suits.
Arch Linux: What Rolling Release Actually Costs
How pacman and the AUR work, why partial upgrades break systems, what maintaining a rolling release actually involves, and an honest answer on whether you should run it.
Fedora: Where Red Hat Linux Gets Built
Fedora's six-month cadence, how it feeds CentOS Stream and RHEL, living with dnf and SELinux, and why it is the desktop to run if your servers are Red Hat.
Debian: Stable Means Unchanging, Not Bug-Free
How Debian's stable, testing and unstable branches work, what backports are for, why it runs so many servers, and where it differs from Ubuntu in practice.
Migrating a Server Without Downtime
Moving a site to a new server: syncing files with rsync, dumping and restoring databases, testing the new box before anyone points at it, and cutting DNS over safely.
Reading Linux Logs: journalctl and the Files It Did Not Replace
Finding the failure in journalctl and in traditional log files: filtering by time, unit and priority, and a repeatable method for diagnosing something that just broke.
Linux Firewalls: ufw, firewalld and What They Miss
How to configure a host firewall properly with ufw or firewalld, why Docker quietly punches holes through it, and where cloud security groups fit in.
Getting Started with Docker
A container is a process on your machine, isolated from the rest of it and shipped with everything it needs to run. Not a virtual machine — there is no…
Securing a New Linux Server
A server exposed to the internet starts receiving automated login attempts within minutes of booting. Not because anyone is interested in you — because everything with a public IP address…
Set Up a Web Server with Nginx
From a bare server to a site served over HTTPS with a certificate that renews itself. This assumes you have already worked through securing a new server — in particular…