恢复关机状态为仅 root

恢复关机状态为仅 root

我已经更改了关机命令,以便能够以普通用户(非 root)身份运行它:

sudo chmod a+s /sbin/shutdown

现在我只有在运行关机时才能回到 root 状态:

$ sudo chmod a-s /sbin/shutdown 
$ ls -l /sbin/shutdown 
lrwxrwxrwx 1 root root 14 May  5 20:55 /sbin/shutdown -> /bin/systemctl

$ ls -l /bin/systemctl
-rwxr-xr-x 1 root root 659848 May  5 20:55 /bin/systemctl

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