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Re: File permission confusion [Debian 9.1 with MATE]

On seg, 01 jan 2018, Richard Owlett wrote:
I need a tutorial. Man pages are unsatisfactory. Sort of like giving someone a dictionary and expecting them to become competent writers.

The file/directory permission, and the chmod command to set them are very old. Any book on Unix or Linux should cover them. I remember O'Reilly had several good books, but I cannot recommend any specific one right now.

As for chattr, the suggestion someone else made to forget about it by now is a good one. First get a good understanding of the basic permission system.