docs: def copy_file(file_name):
  	"""
  	Copy a given file from the cache storage
  	"""
  
  	remote_file_path = join(join(expanduser('~'), OCTOGRID_DIRECTORY), file_name)
  	current_path = join(getcwd(), file_name)
  
  	try:
  		copyfile(remote_file_path, current_path)
  	except Exception, e:
  		raise e