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Understanding Groups

You might have noticed that the Ownership & Permissions section of the Info panel enables you to specify permissions for the owner of the file, the group to which that user belongs, and others. But what is a group? Let’s look at that concept briefly now.

In UNIX systems, users can be classified into many different groups so that they can access, or be excluded from accessing, certain information. In other words, some files are needed by more than one person, but shouldn’t be accessed by everyone. To facilitate appropriate file sharing, groups are defined to identify who can have access to which system features.


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