If you're root, then if we ignore platform-specific additions (like setting a file immutable, see chattr(1) on Linux for example) you can read or write any file.

I would like to take the opportunity to plug my module File::Find::Rule::Permissions :-) It makes it pretty easy to find files or directories based on whether a given user (not necessarily the current user) can read or write them.

In reply to Re: Checking permissions on server by DrHyde
in thread Checking permissions on server by Anonymous Monk

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