This script processes jdupes output to always deletes from witin the given directory

delete-left.rb

#!/usr/bin/env ruby

# This script processes jdupes output to always deletes from witin the given directory
# Example usage: `$ jdupes -r dir1 dir2 | ./delete-left.rb -d dir1`

require 'optparse'

options = {}
OptionParser.new do |opts|
  opts.banner = "Usage: delete-left.rb [options]"
  opts.on("-d", "--dir DIR", "Directory to delete files from") do |dir|
    options[:dir] = dir
  end
end.parse!

# Iterate through each match set
while match_set = ARGF.gets("\n\n")
  # Split match set into an array of files
  files = match_set.split("\n")

  # Determine which file to delete
  files_in_directory = files.select { |file| File.dirname(file).start_with?(options[:dir]) }
  next if files_in_directory.empty? || files_in_directory.length > 1

  file_to_delete = files_in_directory.first

  # Delete the file
  if File.delete(file_to_delete)
    puts "Deleted #{file_to_delete}"
  else
    puts "Failed to delete #{file_to_delete}", STDERR
    exit 1
  end
end