Notes

Links, cheatsheets and references, updated periodically.

Mostly for myself, but you might find them useful, too.

General

RegEx

Linux

Linux directories
Users and groups
SSH key authentication
Editing video using ffmpeg
VirtualBox on Linux
Accessing and converting iPhone photos on Linux

Server setup

Basic setup and administration of Debian-based server.

Assumptions:

• All commands are run as root.
• The user is named "me".
• Domain is "mydomain.org".
• $EDITOR is the text editor of your choice (I use micro).

Set up a non-root user
Set up the firewall
Set up LetsEncrypt (certbot) certificates
Set up fail2ban

PinePhone

Initial setup
Accessing ProtonMail using Geary and Proton Bridge
Plasma Mobile
SWMO (aka SXMO-de-Sway)
How to rice your SWMO (external link)

postmarketOS

pmbootstrap
Notes on Asus Nexus 7

Hosting

Matrix Synapse server
Prosody XMPP server
SMP (SimpleX Messaging Protocol) server setup