为什么回显“我的密码”| sudo -kS ls 不适用于 Beaglebone 上的 debian

Question

我正在 Debian (4.14.108-ti-r113) 上运行 Beaglebone。我需要从 debian 用户运行 root 命令。我尝试了很多方法仍然导致错误。

一些尝试：

$ echo "MYPASSWORD" | sudo -kS ls

[sudo] password for debian: Sorry, try again.
[sudo] password for debian: 
sudo: 1 incorrect password attempt


$ sudo -S <<< MYPASSWORD ls
[sudo] password for debian: Sorry, try again.
[sudo] password for debian: 
sudo: 1 incorrect password attempt

$ echo -e "MYPASSWORD\n"|sudo -S 
[sudo] password for debian: Sorry, try again.
[sudo] password for debian: 
sudo: 1 incorrect password attempt

注意：MYPASSWORD 不包含 $，仅包含 a 到 z 字符

任何想法？