If the effective UID of the caller is root, the real UID and saved set-user-ID are also set.

如果调用者的有效UID是根用户，那么还设置真实uid和保存的set - user - ID。

youdao

If a process switches its effective uid from 0 to non-0, then its effective capability set is cleared.

如果进程将它的有效 uid 从 0 切换到非 0，那么它的有效能力集被清空。

youdao

The file effective set will be full on if the process's effective uid is root or the file is setuid root.

如果进程的有效uid是根用户，或者文件是setuid root，那么文件有效集就是满的。

youdao