Command option Sample:aws rekognition list-collections

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Returns list of collection IDs in your account.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/rekognition/list-collections.html

aws rekognition list-collections
    Listing Faces in a Collection - Amazon Rekognition : http://docs.aws.amazon.com/rekognition/latest/dg/list-collection-procedure.html
aws rekognition list-collections \\\n--region us-east-1 \\\n--profile user2"
    Amazon facial recognition using Rekognition Scott Hutchinson Medium : http://medium.com/@sjehutch/amazon-facial-recognition-using-rekognition-ba01510085b2

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