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

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

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

Ubuntu no Windows Active Directory

Ubuntu in Windows Active Directory

Integrating an Ubuntu machine into a Windows Active Directory domain requires, in short: pointing the client’s DNS to the domain controller, setting a consistent hostname in /etc/hostname and /etc/hosts, and having the domain name and an account with … Read more

Instalando Gogs no Ubuntu

Installing Gogs on Ubuntu

Gogs is a self-hosted Git server written in Go: one binary, no Ruby, no Node, no queue, no Redis. Put the file on the server, point it at a database, and you have an interface similar to GitHub’s … Read more

500 comandos Linux: guia por tarefa e PDF

500 Linux commands: task-based guide and PDF

Note (2026): originally published on 2017, this guide has been revised for current reference; the archive PDF remains identified as historical material. You don't need to memorize hundreds of commands: you need to recognize the task, find the tool, and check what … Read more