Ubuntu免密碼輸入關機腳本

備註：命令很簡單，重點在於不需要輸入密碼。可以結合自定義桌面圖標，一鍵執行腳本。

#!/bin/bash
PASSWORD=
echo $PASSWORD  | sudo -S shutdown -h $1

man sudo

-S          The -S (stdin) option causes sudo to read the password from
            the standard input instead of the terminal device.  The pass‐
            word must be followed by a newline character.