Apple adds extended file attributes on top of this that can be used by apps or the system.īut despite all the control over who can do what, there’s shockingly no way to lock permissions for a given folder such that everything created in it, modified in it, or added to it inherits the permissions of the parent folder. Unix generally divides permissions in user, group, and “world,” meaning all other users of the system for read, write, execute, and a few extras typically needed only by system files. Permissions are designed to compartmentalize users and prevent non-privileged users from accessing administrative functions. Many operating systems have the concept of “file permissions,” which are metadata attributes set for each file and folder (or directory) about who may create, manipulate, and delete items, as well as who may execute or run them as software. The first problem is a limitation with the underlying Unix system upon which macOS is built upon+.
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