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How to Install Nginx in Online

$ curl -fsSL https://nginx.org/keys/nginx_signing.key | sudo apt-key add -
$ sudo apt-key fingerprint ABF5BD827BD9BF62
$ sudo add-apt-repository "deb https://nginx.org/packages/ubuntu/ $(lsb_release -cs) nginx"
$ sudo apt update
$ sudo apt install nginx

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Nginx Basic Auth Setting

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package main;

import okhttp3.*;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

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• Wiki About GnuPG
• Generating a GPG key

$ gpg --full-gen-key
...
Please select what kind of key you want:
   (1) RSA and RSA (default)
   (2) DSA and Elgamal
   (3) DSA (sign only)

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Gradle Commad Guide

Create new Gradle Builds

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Gradle Setting

~/.gradle/gradle.properties

systemProp.proxySet=true

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// imports a couple of java tasks
apply plugin: "java"

// List available tasks in the shell
> gradle tasks

// A Closure that configures the sourceSets Task
// Sets the main folder as Source folder (where the compiler is looking up the .java files)
sourceSets {
  main.java.srcDir "src/main"

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• Ubuntu

Details

vi /etc/environment
export http_proxy=username:password@proxy-server-ip:8080
export https_proxy=username:password@proxy-server-ip:8082
export ftp_proxy=username:password@proxy-server-ip:8080

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Postman JavaScript Reference

https://learning.postman.com/docs/writing-scripts/script-references/postman-sandbox-api-reference/

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Postman Pre-Request POST Script

https://codecamper.me/blog/91/

pm.sendRequest({
    url: 'https://codecamper.me/auth',

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.vimrc Setting

Details

set shiftwidth=2
set tabstop=2
set expandtab
""set ai

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RSA Public/Private Key

Details

# Generate RSA key
$ openssl genrsa -out tls.key 2048
$ ssh-keygen -t rsa 2048

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https://www.katacoda.com/kdy3333

Install Kafka & Zookeeper

$ apt-get update
$ apt-get --assume-yes install default-jre
$ apt-get --assume-yes install zookeeperd
$ service zookeeper stop
$ mkdir kafka