Check out example codes for "ncbi datasets command-line tool". It will help you in understanding the concepts better.

Code Example 1

$ curl -o datasets 'https://ftp.ncbi.nlm.nih.gov/pub/datasets/command-line/LATEST/mac/datasets'

Code Example 2

$ curl -o datasets 'https://ftp.ncbi.nlm.nih.gov/pub/datasets/command-line/LATEST/linux-amd64/datasets'

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