pick-files

pick-files is a script that randomly selects a specific number of files
from a set of folders and copies these files to a single destination folder.
During repeat runs the previously selected files are excluded from the
selection for a specific time period that can be specified.

Usage Example
-------------

 pick-files --number 20 \

     --destination output \

     --suffix .jpg --suffix .avi \

     --folder folder1 --folder folder2

Would choose at random 20 files from folder1 and folder2 (including
sub-folders) and copy those files into output. The output is created if
it does not exist already. In this example, only files with suffixes .jpg
or .avi are considered.