Chapter 8. Access Control Lists

Chapter 8. Access Control Lists

8.1. Mounting File Systems
8.1.1. NFS
8.2. Setting Access ACLs
8.3. Setting Default ACLs
8.4. Retrieving ACLs
8.5. Archiving File Systems With ACLs
8.6. Compatibility with Older Systems
8.7. Additional Resources
8.7.1. Installed Documentation
8.7.2. Useful Websites

Files and directories have permission sets for the owner of the file, the group associated with the file, and all other users for the system. However, these permission sets have limitations. For example, different permissions cannot be configured for different users. Thus, Access Control Lists (ACLs) were implemented.

The Red Hat Enterprise Linux 5 kernel provides ACL support for the ext3 file system and NFS-exported file systems. ACLs are also recognized on ext3 file systems accessed via Samba.

Along with support in the kernel, the acl package is required to implement ACLs. It contains the utilities used to add, modify, remove, and retrieve ACL information.

The cp and mv commands copy or move any ACLs associated with files and directories.


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