AWS-CLI

AWS CLI Cheat Sheet — Quick Reference

Handy commands from login/config to advanced usage. Click Copy on any block to grab commands instantly.

🔑 Login & Configuration

aws configure                          # Configure with Access Key & Secret
aws configure sso                      # Configure with Identity Center (SSO)
aws configure list                     # Show current config
aws configure list-profiles            # Show all profiles
aws sts get-caller-identity            # Show who you are logged in as

📦 S3 (Storage)

aws s3 ls                              # List all buckets
aws s3 ls s3://my-bucket               # List files in bucket
aws s3 mb s3://my-new-bucket           # Create bucket
aws s3 cp file.txt s3://my-bucket/     # Upload file
aws s3 cp s3://my-bucket/file.txt .    # Download file
aws s3 sync ./localdir s3://my-bucket/ # Sync local dir → S3

💻 EC2 (Compute)

aws ec2 describe-instances             # List all EC2 instances
aws ec2 start-instances --instance-ids i-1234567890abcdef0
aws ec2 stop-instances  --instance-ids i-1234567890abcdef0
aws ec2 terminate-instances --instance-ids i-1234567890abcdef0
aws ec2 create-key-pair --key-name MyKey > MyKey.pem

👤 IAM (Users & Access)

aws iam list-users
aws iam create-user --user-name testuser
aws iam attach-user-policy --user-name testuser \
  --policy-arn arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess

📊 CloudWatch (Logs & Metrics)

aws logs describe-log-groups
aws logs describe-log-streams --log-group-name /aws/lambda/my-function
aws logs get-log-events \
  --log-group-name /aws/lambda/my-function \
  --log-stream-name <stream-name>

⚡ Lambda

aws lambda list-functions
aws lambda invoke --function-name myLambdaFunction output.json

🗄️ DynamoDB

aws dynamodb list-tables
aws dynamodb scan --table-name MyTable

🔥 EMR (Big Data)

aws emr list-clusters
aws emr describe-cluster --cluster-id j-1234567890ABCDEF
aws emr add-steps --cluster-id j-1234567890ABCDEF \
 --steps Type=Spark,Name="SparkJob",ActionOnFailure=CONTINUE,Args=[--class,org.apache.spark.examples.SparkPi,s3://my-bucket/spark-examples.jar,10]

⚙️ Advanced CLI Tricks

# Use profiles
aws s3 ls --profile dev
aws s3 ls --profile prod

# Query with JMESPath
aws ec2 describe-instances \
  --query "Reservations[*].Instances[*].InstanceId" --output text

# Change output format
aws ec2 describe-instances --output table
aws ec2 describe-instances --output text
aws ec2 describe-instances --output json

# Stop all EC2s in a region
for id in $(aws ec2 describe-instances \
  --query "Reservations[*].Instances[*].InstanceId" --output text); do
    aws ec2 stop-instances --instance-ids $id
done

Best Practices: Prefer SSO/roles over static keys. Use profiles for multiple accounts. Rotate keys when used. Consider tools like aws-vault for secure storage.

Click Copy to grab commands instantly while practicing 🚀