This section includes mostly technical documents written by me (unless specified).
Security
HOWTO Save Yourself From Ransomware Using btrfsStoring multiple sensible documents in public services
GPG Cheat Sheet
Self-signed Certificates Nano-HOWTO
Networking and sysadmin
HOWTO set up Wireguard and SSH to connect two hosts behind NATHOWTO set up a Wireguard client on OpenBSD
Tor hidden services (en español)
HOWTO compact a Virtualbox disk
Sobre la creación de canales de Telegram (en español)
HOWTO install Linux from grub with an USB pendrive
Calculated columns in PostgreSQL using triggers (2008)
Sharing code via email with git (2008)
Matching git-svn strange authors to useful email addresses (2008)
Building a Bluetooth network with Linux, probably outdated (2005)
Cómo conectar a Internet con Movistar usando Linux, Bluetooth y un Nokia 6630, probably outdated (en español, 2006)
Software development
From C to C++: A quick reference for aging programmersUnicode, UTF-8 and all that: An intentionally incomplete character set introduction for hasty C programmers
CVS Notes (2003)
Algorithms
El algoritmo Diffie-HellmanA simple pseudorandom number generator
Linux on things
Linux on a Toshiba Satellite A30-303, outdated (2004)LinuxPPC - Teclado español, outdated (en español, 2000)
Linux on a Toshiba Satellite 310 CDS, outdated (1999)
OpenBSD
My OpenBSD in a laptop series:
Part 1Part 2
Part 3
Translations of documents by others
Una amistosa introdución a la codificación de vídeo, parte 1: contenedores, by Mark PilgrimUna amistosa introdución a la codificación de vídeo, parte 2: vídeo con pérdida, by Mark Pilgrim
Una amistosa introdución a la codificación de vídeo, parte 3: sonido con pérdida, by Mark Pilgrim
LWN: Btrfs, ¿incorporarlo al núcleo principal?, by Jake Edge
LWN: Btrfs apunta a su inclusión, by Jon Corbet
Paleontology (en español)
Las Eras GeológicasClase Reptilia