a tiny script for GoProblems

If you are a happy owner of GoProblems.com dump or know where to get it (URL) then you may want to use my script to fetch and sort Go problems.
Example of usage:

URL="http://my.private.file.store/files/goproblemsSGF.tgz" bash goproblems_get_n_sort.sh

(this is kinda simplified yet advanced version of goproblems2gquiz.sh )
Enjoy!