LIST:   aws s3api list-objects-v2 --bucket $BUCKET --prefix $PREFIX
GET:    aws s3api get-object      --bucket $BUCKET --key $KEY $OUTFILE
HEAD:   aws s3api head-object     --bucket $BUCKET --key $KEY
COPY:   aws s3api copy-object     --bucket $BUCKET --key $NEWKEY --copy-source $BUCKET/$OLDKEY
DELETE: aws s3api delete-object   --bucket $BUCKET --key $KEY
PUT:    aws s3api put-object      --bucket $BUCKET --key $KEY --body $FILE