Yes, extended attributes and ACLs are really fun, but beware -- most backup programs currently still ignore EA and ACL data.

是的，扩展属性和 ACL 的确很有趣，但是，当心 ― 大多数备份程序目前仍然忽略 EA 和 ACL 数据。

youdao

Using ACL gives more control on who can and cannot access or execute a file or directory; that is determined by the extended permissions that can be given to a file on a user or group basis.

通过使用ACL，可以更好地控制谁可以、谁不可以访问或执行文件或目录；这由按用户或组分配给文件的扩展权限决定。

youdao

To sum up, the scope of an ACL is at least the resource it secures, however the scope can be extended by an application in order to implement a designer's desired authorization model.

总之，ACL 的范围至少是它保护的资源，不过，应用程序可以扩展该范围，以实现设计人员所需的授权模型。

youdao