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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.

Básico: Complexidade: (https://en.wikipedia.org/wiki/Time_complexity)
How Quantum Computers Break Encryption | Shor's Algorithm Explained (https://www.youtube.com/watch?v=lvTqbM5Dq4Q)
How to Make Sense of Google’s Quantum Supremacy Claim (https://www.extremetech.com/extreme/300987-googles-quantum-supremacy-paper-tldr-edition)
The Extreme Physics Pushing Moore’s Law to the Next Level (https://www.youtube.com/watch?v=f0gMdGrVteI)
Graphene Processors and Quantum Gates (https://www.youtube.com/watch?v=VLPpDoMBVK0)
How Quantum Computers Break Encryption | Shor's Algorithm Explained (https://www.youtube.com/watch?v=lvTqbM5Dq4Q)
How Shor's Algorithm Factors 314191 (https://www.youtube.com/watch?v=FRZQ-efABeQ)
How Does a Quantum Computer Work? (https://www.youtube.com/watch?v=g_IaVepNDT4)
What is Quantum Mechanical Spin? (https://www.youtube.com/watch?v=v1_-LsQLwkA)
Secret Key Exchange (Diffie-Hellman) - Computerphile (https://www.youtube.com/watch?v=NmM9HA2MQGI)

This example shows how to read options and positional arguments from a bash script (same principle can be applied for other shells).

# some global var we want to overwrite with options
force=false
help=false
log=info
ARGS=() ### this array holds any positional arguments, i.e., arguments not started with dash

while [ $# -gt 0 ]; do

How to flash MIUI Fastboot ROM from Linux

Download the fastboot ROM suitable for your device from the MIUI site and extract the downloaded archive [edit: MIUI page is dead. Use Xiaomi Firmware Updater]
Download and extract the Android SDK Platform Tools
Make sure adb and fastboot (components of platform-tools) are in your

TRZ (The Resident Zombie) - Backend

Problem Description

The world, as we know it, has fallen into an apocalyptic scenario. The "Influenzer T-Virus" (a.k.a. Twiter Virus) is transforming human beings into stupid beasts (a.k.a. Zombies), hungry to cancel humans and eat their limbs.

You, the last survivor who knows how to code, will help the resistance by deploying a system to connect the remaining humans. This system will be essential to detect new infections and share resources between the members.

Requirements

Smart Caps Lock: Remap to Control AND Escape (Linux, Mac, Windows)

把 Caps Lock 變成智慧的 Control 以及 Escape ：

單獨輕按一下就是 Escape 。
若按下時同時按著其他鍵，就會是 Control 。

這應該是 Vim 和 Emacs 的最佳解了！(Emacs? Bash 的快捷鍵就是 Emacs 系列的)

Send Escape if you tap Caps Lock alone.

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like:

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

I don't use keyservers. Ever.
Yes, I use Gmail instead of some bespoke hipster freedom service

add a Breakpoint to your TestCase code
start your jUnit Test in Debug mode
Open the Display View (Window menu > Show view > Display)
paste the following snippet into the Display view

org.hsqldb.util.DatabaseManagerSwing.main(new String[] {
  "--url",  "jdbc:hsqldb:mem:testdb", "--noexit"
});

Select the snippet code

	function! Sort(type, ...)
	'[,']sort
	endfunction
	nmap <silent> <key> :set opfunc=Sort<CR>g@

	" usage:
	" <key>ip
	" <key>G