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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.
Quotation of var $1 is mandatory. In the other case this script fails when file name contains spaces.
The -e switch is correct since directories and devices are files.
If so the insturutions should be updated to "regular file". I went with -e as well.