Ubuntu Sudo Nopasswd

目前用到比較好 sudo nopasswd 的方法
Ubuntu 16.04 適用

改寫一下, 這是講 ubuntu clouding image , 不過一般 Desktop 應該也適用

At the end of /etc/sudoers there is what I thought was just a comment:
#includedir /etc/sudoers.d

You should edit this file using visudo. The following command will let you edit the correct file with visudo.

$ sudo visudo -f /etc/sudoers.d/90-cloudimg-ubuntu 

And add a line like:

[username] ALL=(ALL) NOPASSWD:ALL 

At the end.

http://askubuntu.com/questions/192050/how-to-run-sudo-command-with-no-password