Mike dot-mike

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.

I've spent the day trying to get this setup working with GitHub and given the number of gotcha's I encountered, it seemed like a good idea to document how I finally got this working with as few hacks as possible. There's a lot of documentation out there (some of it old and misleading) and committing here for posterity will help me remember this when I inevitably need to do this again.

Rationale

Passwords are simply not enough these days. Regardless of the company, breaches (and the associated Personally Identifiable Information harvested) are a matter of not if, but when. There are a number of things you can do to protect yourself, but being on the tin-foil-hat side of paranoia, means there are a few Commandents that I adhere to (and recommend for other folks)[Insert link to Fight Club Rules for the Secure Internet].

That being said, if you use 2-factor authentication and have committed to using a hardware token such as the Yubikey, then you're already ahead of the curve. The problem is that wh

How to backup

docker-compose exec -T <mongodb_service_name> mongodump --archive --gzip --db <mongodb_database> > dump.gz

How to restore

docker-compose exec -T  mongorestore --archive --gzip &lt; dump.gz

Export running or paused Container:

Export

docker export <dockernameortag> | gzip > mycontainer.tgz

Load

gunzip -c mycontainer.tgz | docker load

Introduction

The objective of these instructions is to create a complete Arm64 OS (Userland and Kernel) using Debian Debootstrap and RPI-Update for use on the Raspberry Pi 3 and 4.

Prerequisites:

An existing Debian/Raspbian system (any architecture will do)
An empty SD card formatted as per a standard Raspbian installation mounted to /mnt/sd on the build system
- 1st Partition 0-256MB = FAT32 (Mount to /mnt/sd/boot)
- 2nd Partition 256MB+ = EXT4 (Mount to /mnt/sd)

	#!/bin/bash
	# Parallel rsync script originally designed for rsyncing
	# large ata transfers from RAID to RAID for the Aagaard Lab.
	# Author: Michael Jochum
	# Location: Baylor College of Medicine, Houston, TX, USA
	# Contact : [email protected]
	# Date : 2 November 2020

	##################################
	#Step 0: fill this shit out

	#reference https://medium.com/@siriphonnot/backup-and-restore-a-mysql-database-from-a-running-docker-mysql-container-6c932907e21f
	#reference https://medium.com/@vineetcic/script-to-take-mysql-database-backup-for-last-7-days-45f97ed067a9

	mysqlUser="root"
	mysqlPassword="xxxxx"
	mysqlHost="127.0.0.1"
	DB="my_db"
	credentialsFile="/mysql-credentials.cnf"

	/usr/local/bin/docker-compose exec -T mysql bash -c "

	# TiMOS-B-14.0.R4 both/i386 Nokia 7750 SR Copyright (c) 2000-2016 Nokia.
	# All rights reserved. All use subject to applicable license agreements.
	# Built on Thu Jul 28 17:26:53 PDT 2016 by builder in /rel14.0/b1/R4/panos/main

	# Generated SUN MAR 13 06:28:52 2016 UTC

	exit all
	configure
	#--------------------------------------------------
	echo "System Configuration"

	vm.max_map_count=262144
	net.core.default_qdisc = fq
	net.ipv4.tcp_congestion_control = bbr
	net.ipv4.tcp_notsent_lowat = 16384
	net.core.somaxconn = 4096

	# Increase size of file handles and inode cache
	fs.file-max = 20971520

	# Do less swapping

	# For recent versions of Ubuntu:
	- https://www.pugetsystems.com/labs/hpc/ubuntu-22-04-server-autoinstall-iso/

	# Docs:
	- https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls
	- https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls/ConfigReference
	- https://cloudinit.readthedocs.io/en/latest/topics/datasources/nocloud.html
	- https://discourse.ubuntu.com/t/please-test-autoinstalls-for-20-04/15250/53

	# Download ISO Installer: