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How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

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Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

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import {
  AfterViewInit,
  Component,
  ElementRef,
  Input,
  OnDestroy,
  ViewChild
} from '@angular/core';
import { fromEvent } from 'rxjs';
import { pairwise, switchMap, takeUntil } from 'rxjs/operators';

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var UInt4 = function (value) {
	return (value & 0xF);
};

var Int4 = function (value) {
	var ref = UInt4(value);
	return (ref > 0x7) ? ref - 0x10 : ref;
};

var UInt8 = function (value) {

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Generic 1,2,3 Noise

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);
	return mix(rand(fl), rand(fl + 1.0), fc);
}