edit mkv title from command line in macOS

mkvpropedit /Volumes/Movies/2015/chappie.mkv --edit info --set "title=chappie"

to install mkvproperedit on macOS do 'brew install mkvtoolnix'

lowercase old folders and filenames

rename -f 'y/A-Z/a-z/' *

compress files except folder

tar -zcvf filename.tgz folder_name/  --exclude=/folder_name/*