JT Tower450

0.1. References
0.2. Other cheatsheets
0.3. Manage multiple gcloud config configurations
- 0.3.1. Switch gcloud context with gcloud config
0.4. Credentials
0.5. info
0.6. projects
0.7. zones & regions
0.8. Organization
0.9. billing

How to get on Rinkeby Testnet in less than 10 minutes

Following instructions from the excellent https://www.rinkeby.io/

Synchronizing a Full Node

A full node lets you access all state. There is a light node (state-on-demand) and wallet-only (no state) instructions as well,

How to update the Go version

System: Debian/Ubuntu/Fedora. Might work for others as well.

1. Uninstall the exisiting version

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by:

Installing with apt-get

#!/bin/sh
# https://docs.docker.com/engine/installation/linux/ubuntu/#install-using-the-repository
sudo apt-get update && sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88 | grep docker@docker.com || exit 1
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
sudo apt-get update

Standard JS in create-react-app

I've been using create-react-app lately as I find it very useful to kick things off while starting a project. I almost always follow JavaScript Standard Style and I found myself googling it so I figured out I should write it down.

Get Standard JS

I really like keeping dependencies as local as possible but if you prefer you can install it globally.

yarn add standard --dev

or

	import pytesseract
	import sys
	import argparse
	try:
	import Image
	except ImportError:
	from PIL import Image
	from subprocess import check_output

	#!/usr/bin/env python3
	"""
	License: MIT License
	Copyright (c) 2023 Miel Donkers

	Very simple HTTP server in python for logging requests
	Usage::
	./server.py [<port>]
	"""
	from http.server import BaseHTTPRequestHandler, HTTPServer

	# Basic Download:
	youtube-dl URL

	# Download Playlist, put in folder, and index with order:
	youtube-dl -o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' URL

	# Download to /$uploader/$date/$title.$ext:
	youtube-dl -o '%(uploader)s/%(date)s/%(title)s.%(ext)s' URL

	# Download playlist starting from certain video:

	# Alert when the rate of events exceeds a threshold

	# (Required)
	# Rule name, must be unique
	name: OutOfMemoryError

	# (Required)
	# Type of alert.
	# the frequency rule type alerts when num_events events occur with timeframe time
	type: frequency


	class Node():
	"""A node class for A* Pathfinding"""

	def __init__(self, parent=None, position=None):
	self.parent = parent
	self.position = position

	self.g = 0
	self.h = 0