ike iketiunn

// in app root
cd node_modules && ln -nsf ../ @app

// .gitignore
node_modules/*
!node_modules/@app

// *.js
// Before

Increase volumes in amazon console

EC2 service -> ELASTIC BLOCK STORE -> Chose your volume -> Actions -> Modify Volume

Then wait the process compelete.

Resize file system on instance

ubuntu@ip-172-31-26-7:~$ lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 202:0 0 20G 0 disk

ZeroMQ vs Redis

This document is research for the selection of a communication platform for robot-net.

Goal

The purpose of this component is to enable rapid, reliable, and elegant communication between the various nodes of the network, including controllers, sensors, and actuators (robot drivers). It will act as the core of robot-net to create a standardized infrastructure for robot control.

Requirements:

Computational modle

substition modle

Linear Iteration time = O(n) space = O(1)

Linear Recursion time = O(x) space = O

	# 1
	echo "{a: 123, v: 546}" \| xargs -I {} node -e "console.log(JSON.stringify({}, null, 2))"

	# 2
	cat some.json \| xargs -I {} node -e "console.log(JSON.stringify({}, null, 2))"

	FROM golang:1.13-alpine as builder

	LABEL maintainer="MinIO Inc <[email protected]>"
	ENV GOPATH /go
	ENV CGO_ENABLED 0
	ENV GO111MODULE on

	COPY . ./minio
	RUN cd minio && go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)"

	defmodule HanxinWeb.CounterLive do
	use HanxinWeb, :live_view

	def mount(_params, _session, socket) do
	{:ok, assign(socket, hello: :world, count: 0)}
	end

	def render(assigns) do
	~L"""
	<H1>Hello <%= assigns.hello %></H1>

	/**
	* After aquired a service account's certfication with right permisstion with spreadsheet
	*/
	import { google } from "googleapis"; // npm i googleapis
	const serviceAccount = require('service-account-cert.json')
	const auth = new google.auth.JWT(
	serviceAccount.client_email,
	undefined,
	serviceAccount.private_key,
	"https://www.googleapis.com/auth/spreadsheets",

	# Redireact stdout to date-named file
	λ echo '123' >> "$(date -d 'yesterday 01:00' '+%Y-%m-%d').log"
	λ ls
	2018-09-10.log