Creates a backup of /etc/snapraid.conf to each disk in the snapraid array.
change snapdir to point to the root directory where all snapraid disks are mounted. A copy of snapraid.conf will be stored in the root of each subdirectory of snapdir.
To run at 11:55 every Sunday:
55 23 * * 1 /srv/snapdisk/snapcfg.py >> /srv/snapdisk/snapcfg.log