I want to get total file size from June 01, 2013 till today in HDFS. For example if I have 4 files within this date range(Jun through Nov) with each file being 100KB, I want the output as 400KB. My approach at this point is to perform hadoop fs -ls and get the modification datetime and individual file size. Next step is to exclude all the files that lies outside this range and then sum up the individual file size. Please suggest 1-2 liner approach here. I want to avoid multiple steps here.