Organize Files in Folders

organise_files.rb

require 'fileutils'

(0..99).each do |p|
  p_name = 'klhcc' + (p * 1000).to_s.rjust(5, '00000')
  FileUtils.mkdir_p (0..99).map{ |c| "#{p_name}/klhcc" + (p * 1000 + c * 100).to_s.rjust(5, '00000') }  
end

Dir.glob("*.md") do |file|
  filename = File.basename(file, '.md')
  pf = 'klhcc' + "#{filename.chop.chop.chop}000".rjust(5, '00000')
  cf = 'klhcc' + "#{filename.chop.chop}00".rjust(5, '00000')
  FileUtils.mv(file, "#{pf}/#{cf}/#{filename}.md")
end