Notes

Links, cheatsheets and references. Mostly for myself, but you might find them useful, too.

General

ASCII table

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)

Hosting

Matrix Synapse server

Prosody XMPP server

SMP (SimpleX Messaging Protocol) server setup