How to avoid sudo password prompt?

this tutorial is for idiots.If u want windows with its lack of safety go and buy it!

Using visudo is far more safe since it checks for syntax errors, and other stuff. If you want nano, use:

EDITOR=nano visudo

chmod-ing system security files is a bad practise, unless you really know what you’re doing. Let alone using sudo without a password. I guess to each his own…

1. The "safe" way to do this is to use the [code]visudo[/code] utility (if you mess up the sudoers file, you’re in big trouble).

2. For your example, you also need to [code]usermod -a -G admin myusername[/code]

3. Rather than making scary modifications to the %admin group, you should leave it alone and add a NOPASSWD line for your user (or group if it’s a multiuser box):
[code]
%admin ALL=(ALL) ALL
myusername ALL=NOPASSWD: ALL
[/code]
[code]
sudo usermod -a -G admin myusername
[/code]
This covers your user for both passwordless [code]sudo[/code]s, as well as sudoing to other, non-root users.

HTH

is there a command for ubuntu 12.04 i tried this its not working!

Why set permissions to 740? unless you’re owner of sudoers you’re locked out.