Bulk delete s3 objects

s3del-bulk.rb

#!/usr/bin/env ruby

require 'aws-sdk'

BUCKET_NAME = 'YOUR_BUCKET_NAME'
PREFIX = 'your/key/path/'

s3 = Aws::S3::Resource.new(region: 'us-east-1')
bucket = s3.bucket(BUCKET_NAME)

# find files with an embedded colon (:)
keys_to_delete = bucket.objects(prefix: PREFIX)
	.select {|o| o.key =~ /.*:.*/}
	.collect() { |o|
		{ :key => "#{o.key}"}
	}

# delete files found above
bucket.delete_objects({
  delete: { # required
    objects: keys_to_delete,
    quiet: false,
  }
})