I was looking for a cheap machine to run backups and weird experimental stuff and then I remember I had an old MacBook 3,1 from 2007 (Core 2 Duo 2.2 Ghz) in a shelve. In this post I’ll dig deep into useful tricks for anyone looking to use this laptop (or similar) as cli-only Debian server for fun and profit.

So you got an amazing ARM SBC with the RK3399 CPU (NanoPi M4 / RockPro64 / Rock Pi 4B), so much power into such small form factor. Now you are trying Apache or other network intensive tasks and your network seems to crash randomly after a while or whenever it is under load? Learn what the cause of this common and how to fix it.

AppArmor allows you to restrict programs’ capabilities with per-program profiles. Profiles can allow capabilities like network access, raw socket access, and the permission to read, write, or execute files on matching paths. Learn how you can enable it in Armbian for a safer SBC.

Contrary to popular belief the LEDs flashing in your computer/SBC don’t make it run faster. Controlling LEDs on Armbian is very easy, learn how on this quick guide.

O Wi-Fi e Bluetooth integrados do Raspberry Pi 3 podem ser muito úteis para a grande maioria dos utilizadores, no entanto, existem sempre aqueles que pretendem usar a placa ligada por cabo a um router e não precisam dessas funcionalidades. Hoje explico como desativa-las a nível do kernel para poupar energia e aumentar a segurança.