How do I add a user to multiple groups in Ubuntu?

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Track title: CC D Schuberts Piano Sonata D 850 in D

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Chapters
00:00 Question
00:19 Accepted answer (Score 175)
00:52 Answer 2 (Score 27)
01:02 Answer 3 (Score 8)
01:30 Answer 4 (Score 4)
02:05 Thank you

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Full question
https://superuser.com/questions/95972/ho...

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#linux #ubuntu #commandline #permissions

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