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I want to create a directory which is undeletable, and that you can only add files, not delete any file therein.

I was reading the man chattr page and I came across attribute a

A file with the 'a' attribute set can only be opened in append mode for writing. Only the superuser or a process possessing the CAP_LINUX_IMMUTABLE capability can set or clear this attribute.

But it just mentions files. Can I apply it to a directory? Something like

sudo chattr +a +u /path/to/dir
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  • Yes. Have you tried it yourself on a test directory? Commented Mar 31, 2022 at 21:54
  • @NasirRiley nice, yes, I tested and it works :) thanks Commented Apr 1, 2022 at 20:09
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    Does this answer your question? What is the effect of "chattr +a" on a directory Commented Feb 19, 2023 at 11:52

1 Answer 1

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1

This works

sudo chattr +a +u /path/to/dir
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