Introduction to Unix File Permissions
This is meant to be a document that explains for mostly non-technical users what they really need to know about Unix file permissions if they have anything at all to do with a Unix file server. If, having read this document, you know the right questions to ask about file permissions than it will have met its purpose.
Each file and directory in Unix is controlled by the Unix access control system. This means that only certain users can read and write each file and directory. Each file and directory has an owner, which is a user on the server in question.
[more to come]!
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IsaacMorland - 29 Sep 2006