Ian Chen ianchen06

海外兔

Raspberry 4B - Boot from SD and rootfs on USB

Update

RPi4 now supports booting directly from USB. First update to get an eeprom which supports USB Boot, then configure the bootloader to boot from USB.

Original guide

Download Raspbian from the official site

Making a board compatible with VIA Configurator

💥NOTE💥: Don't do this yet, all of this stuff is still 🚑💣BLEEDING EDGE💣🚑, and you will 🔪cut yourself🔪 badly if you choose to do it. Please wait for 🗿Wilba's QMK code to be refactored prior to pushing anything to QMK, as we don't want to end up with a bunch of different forks of the code.

So you've seen VIA Configurator in action, and you want to get this magic supported for your board?

There's two main steps:

Add dynamic keymap support to keyboard in QMK
Add layout to VIA

Make sure you have a working and configured s3cmd and you have notify-send installed

Update upload_screenshot to point to your s3 bucket and path

you may need to update DISPLAY and DBUS_SESSION_BUS_ADDRESS (from a working terminal in your X session you can find these by doing echo $DISPLAY && echo $DBUS_SESSION_BUS_ADDRESS )

make sure upload_screenshot is in your (and probably root's) PATH (I put mine in /usr/local/bin) -- also make sure it's executable chmod a+x upload_screenshot

Set up the directory to watch in your incrontab (in my example /home/chadkouse/screenshots ) Any file you put into this directory will get uploaded to s3 and it's url copied to the clipboard.

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.

Download strongswan

https://www.strongswan.org/download.html

sudo apt-get update
sudo apt-get install build-essential libgmp3-dev

tar xvf strongswan.tar.gz
cd strongswan

	#!/bin/bash
	###
	### my-script — does one thing well
	###
	### Usage:
	### my-script <input> <output>
	###
	### Options:
	### <input> Input file to read.
	### <output> Output file to write. Use '-' for stdout.

	from app import db
	from sqlalchemy import func
	from sqlalchemy.dialects.mysql import insert

	def upsert(model, insert_dict):
	"""model can be a db.Model or a table(), insert_dict should contain a primary or unique key."""
	inserted = insert(model).values(**insert_dict)
	upserted = inserted.on_duplicate_key_update(
	id=func.LAST_INSERT_ID(model.id), **{k: inserted.inserted[k]
	for k, v in insert_dict.items()})

	pragma solidity ^0.4.18;

	/**
	* @title SafeMath
	* @dev Math operations with safety checks that throw on error
	*/
	library SafeMath {

	/**
	* @dev Multiplies two numbers, throws on overflow.

	kubectl get po -a --all-namespaces -o json \| \
	jq '.items[] \| select(.status.reason!=null) \| select(.status.reason \| contains("Evicted")) \|
	"kubectl delete po \(.metadata.name) -n \(.metadata.namespace) --grace-period=0 --force " ' \| xargs -n 1 bash -c