Instalando o OpenCMS

Installing OpenCMS

OpenCms is a web content management system written in Java, free under the LGPL license and maintained by Germany’s Alkacon Software. It is not the CMS you install on R$ 20 shared hosting — it is what businesses and public agencies … Read more

Motivos que levam usuários a se decepcionar com Linux

Reasons users become disappointed with Linux

In this post, I will try to cover the main reasons that, in my view, lead new users to become disappointed with the penguin. Original article from the Oficina do Tux blog. Performance and compatibility This point is mainly for users of … Read more

Conhecendo o DNS

Getting to Know DNS

What is DNS DNS stands for Domain Name System (Sistema de Nomes e Domínios in Portuguese), which converts the website domain names people type into web browsers into IP numbers. … Read more

Usando chaves de autenticação no SSH

Using SSH authentication keys

SSH passwords are still vulnerable to brute force. A key pair — the public key on the server, the private key on your machine, protected by a passphrase — is how you log in in 2026. OpenSSH on Ubuntu 24.04/26.04 already generates Ed25519 when you run ssh-keygen … Read more

Ubuntu Abandonara a Interface Unity

Ubuntu Will Abandon the Unity Interface

On April 5, 2017, Mark Shuttleworth, founder of Ubuntu and Canonical, published an announcement ending one of the biggest bets in the distribution’s history: Canonical would abandon Unity8 and its convergence strategy (the same system … Read more