Introduction
What are ACLs?
ACLs versus Traditional Permissions
ACLs though powerful add additional complexity to the system and do have some limitations. ..The general principle of the Bonsai Framework is simplicity first, so we recommend as a rule of thumb, try using traditional permissions first with its caveats and add ACLs if absolutely necessary.
References
Good introduction from the Ubuntu docs - https://help.ubuntu.com/community/FilePermissionsACLs
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