Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I think this is not a problem here.
If $1 has spaces you might not get what you expect. Also, it's possible to hit the max command length with this as well.
[[ ! -z ... ]] can be changed to [[ -n ... ]].
If you were to read ! -z you're saying "not not set/null"
If so the insturutions should be updated to "regular file". I went with -e as well.