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Create an IAM User with AdministratorAccess policy.

Install AWS Cli, Go to IAM User and Security credentials, Access Key, Create Access Key.

aws configure

Enter Values and Output format as json.

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Core.js

Versions
1	es5
2	es6
3	es2015
4	es7
5	es2016
6	es2017

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React

Create App

npm install create-react-app

create-react-app my-app

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Spring Security + JWT + REST API

We will create a sample application for JWT + Stateless Token + Spring Security + REST(JSON) API

1. Create a Spring Boot Project with following dependencies:
   • Spring Web
   • Spring Security
   • Spring Boot DevTools and Other dependencies

deependhamecha

Implemenation to execute Command in CMD with java

public String execCmd(String cmd) throws java.io.IOException {
        java.util.Scanner s = new java.util.Scanner(Runtime.getRuntime().exec(cmd).getInputStream()).useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
}

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Jenkins

Installation

Install docker and docker compose plugin.

docker pull jenkins/jenkins

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Apache

The Apache HTTP Server is configured via simple text files. These files may be located any of a variety of places, depending on how exactly you installed the server.

If you installed httpd from source, the default location of the configuration files is /usr/local/apache2/conf. The default configuration file is usually called httpd.conf.

The configuration is frequently broken into multiple smaller files, for ease of management. These files are loaded via the Include directive.

The server is configured by placing configuration directives in these configuration files. A directive is a keyword followed by one or more arguments that set its value.

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var fun = function(name) {
    var p = new Promise((resolve, reject) => {

        if(name=='Deepen') {
            resolve(`Congrats ${name}`);
        } else {
            reject('Fail');
        }
 });

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Open vscode and settings.json and paste this:

"terminal.integrated.profiles.windows": {
  "PowerShell": {
    "source": "PowerShell",
    "icon": "terminal-powershell",
    "args": ["-ExecutionPolicy", "Bypass"]
  }
},