Here’s a collection of very short how to’s collected for own use not for teaching anything, but to share is in the Free Software DNA.

• DNF problems and how to solve them: if your dnf update returns you a Traceback (most recent call last) message, it may helps you.
• How configure WiFi in Raspbian via command line: compilation of my own Raspbian config sequence: yet on cooking…
• Personal configuration files for my home linux systems
• Lesser and major key on a Lenovo X220 (it has not that keys in its keyboard)
• how to make sudo command ask the user for root password instead of its own password
• Sobre Postgresql:
  1. Iniciar la BD Postgresql después de instalarla en Fedora 31
  2. Conectar a la BD Postgresql en Fedora 31
  3. ¿Cómo ejecutar sql en batch en Postgresql sin que pida contraseña?
• How to know if a package is installed (rpm and deb): how to query both differente package managers to know if a concrete name package is installed.
• Algunas equivalencias entre comandos apt/dpkg y rpm.