geteattr, seteattr and deleattr tools are used to get, set or delete some extra attributes. Attributes are described below.
This flag means, that particular object belongs to current user (‘uid’ and ‘gid’ are equal to ‘uid’ and ‘gid’ values of accessing process). Only root (‘uid’=0) sees the real ‘uid’ and ‘gid’.
This flag means, that standard file attributes such as uid, gid, mode, length and so on won’t be stored in kernel cache.
This flag is similar to above. It prevents directory entries from being cached in kernel.