Apple's New File System
Apple announced APFS (Apple File System) at WWDC 2016. In March 2017, iOS 10.3 converted the iPhone’s flash storage without users noticing. In September of that year, High Sierra did the same on SSDs … Read more
Installing IRPF on Linux
The tax lion still lives on Linux. The Brazilian Federal Revenue Service’s tax return program (PGD) runs on x86_64 with the official installer. You can also file through e-CAC without downloading anything, or through the Receita Federal app. This post is the path … Read more
Installing Hexo on Ubuntu
Hexo is a static site generator in Node.js: Markdown goes in, HTML comes out, no database. GitHub Pages, Netlify, or nginx pointing to public/. In September 2026, the hexo npm package is at 8.1.2. The official CLI remains npm install … Read more
Installing Tomcat 9 on Linux
Tomcat remains the most widely used servlet container on Linux servers. This how-to installs the current release from Apache’s official tarball, with a dedicated user and systemd unit — on Ubuntu 24.04/22.04 and equivalent Debian releases. Which version … Read more
Git made simple and fast
A short cheatsheet: install, configure, clone, commit, push. No object theory. If you have never used Git, these commands cover 90% of cases. Install on Debian/Ubuntu and derivatives: sudo apt update sudo apt install git git –version In 2026 … Read more
Automating environments with Puppet #1
Puppet describes the machine’s desired state — a package installed, a service running, a file with specific contents — and the agent turns the difference into action. You do not write “how to install nginx on this distribution”; you specify that nginx … Read more
Developer Defends Mir
Developer defends Mir: “Why Mir” Canonical developer Alan Griffiths has been blogging extensively about the Mir server over the past few days. He has been trying to get the community to support Mir and potentially even add client support … Read more
Brazilian student admitted to Stanford learned to program at 11
A programmer with an interest in politics and spending transparency. That is how Daniel Ferreira, just 18 years old, describes his interests, which even earned him a nickname: “humanities dev [developer],” as his friends call him. Accepted into … Read more
10 reasons for Ubuntu to use KDE instead of GNOME
10 Reasons for Ubuntu to Use KDE Instead of GNOME This is not a GNOME vs KDE comparison, but a discussion specifically for Ubuntu and its users, considering the innovative vision they have had so far. Just personal thoughts, … Read more
Can IT professionals lose their jobs? What happened next
In March 2017, the IT sector panicked over a provisional measure. In 2026, we can look back and answer three questions: did the measure pass? did the predicted unemployment occur? and what actually changed in … Read more