File watcher, track every file in the same directory for changes.

autotracker.rb

# Directory tracker

begin
  require "digest"
rescue LoadError
  puts "Digest module not found."
end

files = Dir["*"]
files.delete(__FILE__)
fileNames = []
fileHash = []

for each in files
  fileNames << each.split(".")[0]
  fileHash << Digest::MD5.file(each).hexdigest
end

begin
  while true
    for row in (0..files.length-1)
      if fileHash[row] != Digest::MD5.file(files[row]).hexdigest
        puts
        puts "File: "+fileNames[row]
        puts "Hash: "+fileHash[row]
        fileHash[row] = Digest::MD5.file(files[row]).hexdigest
        
        # Do what ever you want with the file
        # Use fileHash[row] as reference
        
      end
    end
  end
rescue Interrupt
  puts "Killing the infinite loop."
end