Getting Started with AWS Console & CLI

Using AWS CLI from Angular, React, Node.js, Java & C#

Part 1: What Is the AWS Console?

AWS Console is a web-based GUI to manage all your AWS services. You can:

• Launch EC2 instances
• Create S3 buckets
• Manage IAM roles
• Set up Lambda functions
• …and much more

Use it when you want an intuitive, click-and-go interface.
Good for exploration, small tweaks, and visualization.

Visit: https://console.aws.amazon.com

Part 2: What Is the AWS CLI?

The AWS CLI (Command Line Interface) is a command-driven tool that allows you to control AWS services via terminal commands or scripts.

• Best for automation
• CI/CD pipelines
• Scriptable infrastructure

Part 3: Installing AWS CLI

Mac/Linux/Windows

Install via:

curl "<a href="https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" target="_blank" rel="noreferrer noopener">https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip</a>" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

Or use a package manager like:

brew install awscli  # macOS
choco install awscli  # Windows

Configure

aws configure

You’ll be prompted to enter:

• AWS Access Key ID
• AWS Secret Access Key
• Region
• Output format (e.g., json)

Useful AWS CLI Examples

List S3 Buckets

aws s3 ls

Upload a file to S3

aws s3 cp ./file.txt s3://my-bucket-name/

Start an EC2 Instance

aws ec2 start-instances --instance-ids i-0123456789abcdef0

Part 4: Using AWS CLI in Code (via SDKs)

Let’s explore how different frontend & backend platforms can work with AWS via CLI or SDK.

Angular / React

Use Amplify or the AWS SDK via a backend proxy. Frontends can’t call the AWS CLI directly (security risk).

Option 1: Use Amplify in React

npm install aws-amplify

// App.js (React)
import Amplify from 'aws-amplify';
import awsExports from './aws-exports';

Amplify.configure(awsExports);

// Call a Lambda function
import { API } from 'aws-amplify';

API.get('myApi', '/items')
  .then(data => console.log(data))
  .catch(err => console.error(err));

Option 2: Use AWS CLI via a Backend API Proxy

# Backend does:
aws s3 cp ./input.json s3://my-bucket/input.json

Your frontend just makes HTTP calls to the backend.

Node.js

Use child_process to invoke CLI or use the SDK.

Option 1: AWS CLI from Node

const { exec } = require('child_process');

exec('aws s3 ls', (err, stdout, stderr) => {
  if (err) throw err;
  console.log(stdout);
});

Option 2: Use AWS SDK

npm install aws-sdk

const AWS = require('aws-sdk');
const s3 = new AWS.S3();

s3.listBuckets((err, data) => {
  if (err) console.error(err);
  else console.log(data.Buckets);
});

Java Example

Add dependency (Maven):

<dependency>
  <groupId>software.amazon.awssdk</groupId>
  <artifactId>s3</artifactId>
  <version>2.25.13</version>
</dependency>

Code Example

S3Client s3 = S3Client.builder().region(Region.US_EAST_1).build();
ListBucketsResponse buckets = s3.listBuckets();
buckets.buckets().forEach(b -> System.out.println(<a href="http://b.name/" target="_blank" rel="noreferrer noopener">b.name</a>()));

C# (.NET)

Install NuGet package:

dotnet add package AWSSDK.S3

Code Example

var client = new AmazonS3Client();
var response = await client.ListBucketsAsync();

foreach (var bucket in response.Buckets)
{
    Console.WriteLine(bucket.BucketName);
}

Summary

Final Tips

• Use IAM Roles for permission management
• Never expose AWS CLI/keys on the frontend
• For frontend integration, prefer Cognito + API Gateway + Lambda
• For automation, use AWS CLI + Bash/Node scripts

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