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Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition by Paul Hudson, Andrew Hudson, Matthew Helmke

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File Permissions

As you learned in Chapter 4, “On the Internet,” there are three types of permissions: read, write, and execute (r, w, x). For any file or directory, permissions are assigned to three categories: user, group, and other. This section focuses on group permissions. First, though, we want to highlight three commands used to change the group, user, or access permissions of a file or directory:

Image chgrpChanges the group ownership of a file or directory

Image chownChanges the owner of a file or directory

chmodChanges the access permissions ...

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