Check if file exists in S3 bucket with Ruby aws-sdk gem

verify_s3_file.rb

require 'aws-sdk'
  
s3 = Aws::S3::Resource.new(
  region: 'us-east-1',
  credentials: Aws::InstanceProfileCredentials.new()
)
bucket =  s3.bucket('my-daily-backups')

file = (DateTime.now).strftime("%Y.%m.%d-backup")
if bucket.object(file).exists?
  puts "File '/my-daily-backups/#{file}' is present in S3 bucket!"
else
  puts "File '/my-daily-backups/#{file}' is not in S3 bucket!"
end