slavking

Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.

Note: many newer Keychron keyboards use QMK as firmware and most tips here do not apply to them. Maybe the ones related to Bluetooth can be useful, but everything related to Apple's keyboard module (hid_apple) on Linux, won't work. As far as I know, all QMK-based boards use the hid_generic module instead. Examples of QMK-based boards are: Q, Q-Pro, V, K-Pro, etc.

Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions. If a command happens not to work for you, take a look in the comment section.

Make Fn + F-keys work (NOT FOR QMK-BASED BOARDS)

Older Keychron keyboards (those not based on QMK) use the hid_apple driver on Linux, even in the Windows/Android mode, both in Bluetooth and Wired modes.

Connecting to a Raspberry Pi through a VPS using a reverse SSH tunnel

SSH (Secure Shell) to a host existing in an internal network through a reverse-tunneled SSH connection to an externally accessible VPS (Virtual Private Server). This setup is described where the internal host is a Raspberry Pi, but can be generalized for any host on the internal network that runs an OpenSSH server.

  internal network                                                   Internet                                       home network
                                              ||                                                         ||
 ------------------                           ||                          ------------------             ||             ------------------
|                  | reverse SSH tunnel (VPS $tunnel_port to Pi port 22) |                  |            ||            |                  |
|   Raspberry Pi     ==================================================>         VPS          ===================

An ultimate guide to Postfix + Dovecot IMAP server with complete SPF, DKIM and DMARC support and additional instructions for a multi-domain setup

In this guide, domain.com will be your root domain and mail.domain.com will be the hostname of your mail server

An ultimate guide to Postfix + Dovecot IMAP server with complete SPF, DKIM and DMARC support and additional instructions for a multi-domain setup
0x05 Install and configure Postfix

VIM KEYBOARD SHORTCUTS

MOVEMENT

h        -   Move left
j        -   Move down
k        -   Move up
l        -   Move right
$        -   Move to end of line
0        -   Move to beginning of line (including whitespace)

	KEYMAPOPTS="us us"
	HOSTNAMEOPTS="-n alpine"
	INTERFACESOPTS="auto lo
	iface lo inet loopback

	auto eth0
	iface eth0 inet dhcp
	hostname alpine
	"
	TIMEZONEOPTS="-z UTC"

	git_current_branch () {
	local ref
	ref=$(command git symbolic-ref --quiet HEAD 2> /dev/null)
	local ret=$?
	if [[ $ret != 0 ]]
	then
	[[ $ret == 128 ]] && return
	ref=$(command git rev-parse --short HEAD 2> /dev/null) \|\| return
	fi
	echo ${ref#refs/heads/}

	#!/usr/bin/env python3
	"""
	To use:
	1. install/set-up the google cloud api and dependencies listed on https://github.com/GoogleCloudPlatform/python-docs-samples/tree/master/texttospeech/cloud-client
	2. install pandoc and pypandoc, also tqdm
	3. create and download a service_account.json ("Service account key") from https://console.cloud.google.com/apis/credentials
	4. run GOOGLE_APPLICATION_CREDENTIALS=service_account.json python make_audiobook.py book_name.epub
	"""
	import re
	import sys

	alias g='git'
	alias ga='git add'
	alias gaa='git add --all'
	alias gapa='git add --patch'
	alias gb='git branch'
	alias gba='git branch -a'
	alias gbl='git blame -b -w'
	alias gbnm='git branch --no-merged'
	alias gbr='git branch --remote'
	alias gbs='git bisect'

	#lumberbot.py - plays Lumberjack Telegram game hopefully
	#Every time you use Python 2, Guido Van Opossum introduces a new bug into Dropbox
	#Tested on Windows on 3.5.2
	import pyautogui
	#import autopy
	#autopy doesn't seem to install now which is unfortunate
	import random
	import time
	import sys

	#!/usr/bin/ruby
	# chkconfig: 35 99 01
	# description: EC2 DNS registration
	# processname: ec2hostname

	require 'aws-sdk'
	require 'net/http'

	`touch /var/lock/subsys/ec2hostname`