delete_old_files_from_s3.sh

#!/bin/bash

# Set the bucket name
BUCKET_NAME="my-s3-bucket"

# Set the threshold for file age (in seconds)
THRESHOLD=$((3 * 30 * 24 * 60 * 60))

# Get the current time
NOW=$(date +%s)

# List all the objects in the bucket
OBJECTS=$(aws s3api list-objects --bucket $BUCKET_NAME | jq -r '.Contents[].Key')

# Loop through the objects and delete any that are older than the threshold
for OBJECT in $OBJECTS
do
  # Get the last modified time of the object
  LAST_MODIFIED=$(aws s3api head-object --bucket $BUCKET_NAME --key $OBJECT | jq -r '.LastModified')

  # Convert the last modified time to a timestamp
  LAST_MODIFIED_TIMESTAMP=$(date -d "$LAST_MODIFIED" +%s)

  # Calculate the age of the object
  AGE=$((NOW - LAST_MODIFIED_TIMESTAMP))

  # Delete the object if it is older than the threshold
  if [ $AGE -gt $THRESHOLD ]
  then
    aws s3api delete-object --bucket $BUCKET_NAME --key $OBJECT
  fi
done