Shell Scripting for AWS Resources listing

Hello Everyone, following the advice of savinder puri I am Learning in Public and this blog is a very important step in it as it starts my blogging journey. So in this first blog I would like to thank him for suggesting this path to me and so many others. As I am new to this field of life I would love to receive some criticism and suggestions. In this blog, I am sharing about shell scripting and my project to list AWS resources in a particular region.

What is Shell Scripting and why Shell Scripting ?

Shell scripting is the process of writing scripts using a shell, which acts as an interface between the user and the operating system. These scripts are essentially a sequence of commands written in a shell-compatible programming language like Bash, Zsh, or Ksh.

Why Use Shell Scripting?

Automation: Automates repetitive tasks, saving time and reducing human errors.
Efficiency: Executes complex tasks that involve file manipulation, system monitoring, or application deployment with ease.
Integration: Acts as a glue between various tools and applications, streamlining workflows.
Customization: Allows users to tailor processes to specific requirements, making systems more flexible and dynamic.
Learning Curve: Easy to learn for beginners while being powerful enough for advanced system administration.

Shell scripting is a cornerstone of system administration and DevOps, empowering users to manage and automate processes effectively.

I have attached one of my shell scripting project below.

What does the Script do ?

The script simply lists out all the AWS resources for a user in a particular region. It lists out the following resources.

ec2
rds
s3
cloudfront
vpc
iam
route53
cloudwatch
cloudformation
lambda
sns
sqs
dynamodb
vpc
ebs

Pre-requisites for the Script

Install AWS CLI in your machine

Click here to see the installation guide
Configure AWS CLI (I prefer creating an IAM user and using access keys)

Click here to steps to configure
Give execution permission to the script

chmod +x <scriptfilename>

Execute the following command

./<scriptfilename> <region> <resource>

Script

#!/bin/bash

#############################################################################
# This script will list all the resources in aws
# Author: Viraj Dalave
# Version: 0.0.1

# Following are the supported services
# 1. ec2
# 2. rds
# 3. s3
# 4. cloudfront
# 5. vpc
# 6. iam
# 7. route53
# 8. cloudwatch
# 9. cloudformation
# 10. lambda
# 11. sns
# 12. sqs
# 13. dynamodb
# 14. vpc
# 15. ebs

# Usage: ./aws_resource_list.sh <region> <resource>
# Example: ./aws_resource_list.sh us-east-1 ec2
#############################################################################

# Check if required numbers of arguments are passed
if [ $# -ne 2 ]; then
  echo "Usage: $0 <region> <resource>"
  exit 1
fi

# Check if awscli is installed
if ! command -v aws &> /dev/null; then
  echo "AWS CLI is not installed"
  exit 1
fi 

# Check if awscli is configured
if [ ! -d ~/.aws ]; then
  echo "AWS CLI is not configured"
  exit 1;
fi

# Execute the commands
case $2 in
  ec2)
        echo "Listing EC2 Instances in $1"
        aws ec2 describe-instances --region $1
        ;;
    rds)
        echo "Listing RDS Instances in $1"
        aws rds describe-db-instances --region $1
        ;;
    s3)
        echo "Listing S3 Buckets in $1"
        aws s3api list-buckets --region $1
        ;;
    cloudfront)
        echo "Listing CloudFront Distributions in $1"
        aws cloudfront list-distributions --region $1
        ;;
    vpc)
        echo "Listing VPCs in $1"
        aws ec2 describe-vpcs --region $1
        ;;
    iam)
        echo "Listing IAM Users in $1"
        aws iam list-users --region $1
        ;;
    route5)
        echo "Listing Route53 Hosted Zones in $1"
        aws route53 list-hosted-zones --region $1
        ;;
    cloudwatch)
        echo "Listing CloudWatch Alarms in $1"
        aws cloudwatch describe-alarms --region $1
        ;;
    cloudformation)
        echo "Listing CloudFormation Stacks in $1"
        aws cloudformation describe-stacks --region $1
        ;;
    lambda)
        echo "Listing Lambda Functions in $1"
        aws lambda list-functions --region $1
        ;;
    sns)
        echo "Listing SNS Topics in $1"
        aws sns list-topics --region $1
        ;;
    sqs)
        echo "Listing SQS Queues in $1"
        aws sqs list-queues --region $1
        ;;
    dynamodb)
        echo "Listing DynamoDB Tables in $1"
        aws dynamodb list-tables --region $1
        ;;
    ebs)
        echo "Listing EBS Volumes in $1"
        aws ec2 describe-volumes --region $1
        ;;
    *)
        echo "Invalid service. Please enter a valid service."
        exit 1
        ;;
esac

Snapshots

I would like to thank Abhishek Veeramalla for the guiding throughout this project.

Shell Scripting for listing AWS resources

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