Takes all files recursively in a path and organizes based on date modified, puts them all into monthly folders

file_archiver.rb

# File Archiver
# Takes all files and organizes based on date modified
# Puts them all into monthly folders

# Usage:
# ruby file-archiver.rb SRC_PATH [DEST_PATH]
# If DEST_PATH isn't entered, then SRC_PATH will be used as destination

require 'fileutils'

root_dir = ARGV[0]
out_dir = ARGV[1]

if out_dir.nil?
	out_dir = root_dir
end

@use_separate_folder = root_dir != out_dir

def archive_file(out_dir, f)
	mod_time = File.mtime(f)
	mod_year = mod_time.year
	mod_month = mod_time.month

	folder = "#{out_dir}/#{"%04d" % mod_year}-#{"%02d" % mod_month}"

	mkdir_p(folder)

	if f != "#{folder}/#{File.basename(f)}"
		if @use_separate_folder
			FileUtils.cp(f, "#{folder}/#{File.basename(f)}", :preserve => true, :verbose => true)
		else
			FileUtils.mv(f, "#{folder}/#{File.basename(f)}", :force => true, :verbose => true)
		end
	end
end

def delete_empty_dir(root_dir)
	recursive_dirs = Dir["#{root_dir}/**/*"].select { |f| File.directory?(f) }

	# Sort into deepest dirs first
	recursive_dirs = recursive_dirs.sort { |a, b| b.split("/").length - a.split("/").length }
	recursive_dirs.each { |d|
		if (Dir.entries(d) - %w[ . .. ]).empty?
			Dir.rmdir(d)
		end
	}
end

def mkdir_p(dir_path)
	Dir.mkdir(dir_path) unless File.exists?(dir_path)
end

mkdir_p(out_dir)

Dir["#{root_dir}/**/*"].select{|f| File.file?(f)}.each { |f|
	archive_file(out_dir, f)
}

if @use_separate_folder
	delete_empty_dir(root_dir)
end

Tested on osx