POSIX actually worked on a standard for ACLs, but never completed it. Many UNIXish operating systems implement POSIX 1003.1e draft 17, the final (unratified) d

POSIX actually worked on a standard for ACLs, but never completed it. Many UNIXish operating systems implement POSIX 1003.1e draft 17, the final (unratified) draft. https://www.usenix.org/legacy/publications/library/proceedings/usenix03/tech/freenix03/full_papers/gruenbacher/gruenbacher_html/main.html https://www.usenix.org/legacy/publications/library/proceedin...