Hmmmm, it looks like my estimate (https://nhw.pl/wp/2006/04/compact-ruby-code/) was wrong.
wc -l rbckp.rb
44 rbckp.rb
or even more interesting:
grep -v ^$ rbckp.rb |wc -l
34
grep -v ^$ BACKUP.sh | wc -l
103
For those not familiar with grep syntax – using -v ^$ filters and shows all not empty lines (for such query line with whitespaces only is not empty).
And basically both scripts does similar work (even if not identical). I like Ruby…