How do I add text to the beginning of a file in Bash?

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Chapters
00:00 Question
00:31 Accepted answer (Score 549)
01:06 Answer 2 (Score 100)
02:32 Answer 3 (Score 35)
03:03 Answer 4 (Score 17)
03:18 Thank you

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Full question
https://superuser.com/questions/246837/h...

Answer 2 links:
[moreutils]: http://joeyh.name/code/moreutils/
[Homebrew]: http://brew.sh/

Answer 3 links:
https://pubs.opengroup.org/onlinepubs/96...

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Tags
#bash

#avk47