How to give a Linux user permission to create backups, but not permission to delete them?

Posted by ChocoDeveloper on Super User See other posts from Super User or by ChocoDeveloper
Published on 2013-10-17T21:55:07Z Indexed on 2013/10/17 22:00 UTC
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linux

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backup

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permissions

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virus

I want to set up automated backups that are kept safe from myself (in case a virus pwns me). The problem is the "create" and "delete" permissions are the same thing: write permission. So what can I do about it? Is it possible to decouple the create/delete permissions?

Another option could be to let the user "root" make the backups. The problem is my home directory is encrypted, and I don't want to backup everything.

Any ideas?

For the backups I'm using Deja Dup, which is installed by default in Fedora and Ubuntu.

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