I have data-collection systems that bring in readings around a solar power plant. It all comes in as CSV files. So I use Python to collect that data and archive the data with files named by the day's data, at midnight. Then another Python program collects all the archived files from each system and brings it into another hard-drive-based system where all the files named by the same date are collected together. It then runs gnuplot for .png representations of each, and then calls Imagemagick to make montages for each day which include data from each kind of sensor. Love Python.