diff --git a/data/copy_images.rb b/data/copy_images.rb
old mode 100644
new mode 100755
index 7a81b91..fe58328
--- a/data/copy_images.rb
+++ b/data/copy_images.rb
@@ -1,6 +1,8 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
-# This is an example of what we want our script to look like for transferring image files from a source location to a destination.
+# This is an example of what we want our script to look like for
+# transferring image files from a source location to a destination.
 # ruby data/copy_images.rb /Users/faisonr/Downloads/imagecat-images-practice-1/input/disk14 s3://puliiif-staging
 source = ARGV[0]
 destination = ARGV[1]
@@ -8,10 +10,10 @@
 files = Dir["#{source}/**/*.tiff"]
 files.each do |file_name|
   puts file_name
-  file_parts = file_name.split("/")
-  file_parts[-1] = file_parts[-1].chop 
-  s3_safe_file_name = "imagecat-#{file_parts[-4..-1].join("-")}"
+  file_parts = file_name.split('/')
+  file_parts[-1] = file_parts[-1].chop
+  s3_safe_file_name = "imagecat-#{file_parts[-4..].join('-')}"
   `aws s3 cp #{file_name} #{destination}/#{s3_safe_file_name}`
 end
 
-# "/Users/faisonr/Downloads/imagecat-images-practice-1/input/disk14/**/*.tiff"
\ No newline at end of file
+# "/Users/faisonr/Downloads/imagecat-images-practice-1/input/disk14/**/*.tiff"