One approach is to run as root, open the privileged port as soon as possible, and then permanently drop root privileges (including any privileged groups the process belongs to).

一个方法是以 root 身份运行，尽可能快地打开需要特权的端 口，然后永久去除 root 特权（包括进程所属的任何有特权的组）。

youdao

They ignore the fact that crises always have a root cause, and they treat crises as if they just drop in from the sky at any moment.

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