What does the last "-" (hyphen) mean in options of `bash`?

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Track title: Ancient Construction

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Chapters
00:00 Question
00:37 Accepted answer (Score 39)
04:53 Answer 2 (Score 7)
05:19 Answer 3 (Score 5)
06:21 Thank you

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Full question
https://superuser.com/questions/1388584/...

Question links:
[this tutorial]: https://www.e2enetworks.com/help/knowled.../

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Tags
#linux #commandline #bash #pipe

#avk47