<div class="doctest-setup">

>>> from xix.utils.config import configFactory
>>> directory = configFactory('xix-unittests.cfg').utils.io.data.directory
>>> from glob import glob
>>> import os.path
>>> files = glob(os.path.join(directory, '*txt'))
>>> files.sort()

</div>

Reading a line from an aggreate file

>>> from xix.utils.io import AggregateFile
>>> fd = AggregateFile(files).open()
>>> print fd.readline()[:-1]
abcdef


