Update file creation dates from exif data

update_file_creation_date_from_exif.rb

#! /usr/bin/ruby

# requires exiftool: `brew install exiftool`

# Used to update file creation dates when converting RAW photos to JPG
# Converted files receive original file's EXIF data, but not file creation date. 
# That date is set to whenever you created the converted file.

# Usage: `> ruby update_file_creation_date.rb ~/Pictures/converted_files/*.*`

files = ARGV
files.each do |file|
  if file.match(/jpg/)
    puts "*** #{file_path}"
    timestamp = %x[exiftool #{file_path} -DateTimeOriginal -d %Y%m%d%H%M | awk '{print $4}'].strip
    %x[touch -t #{timestamp} #{file_path}]
  end
end