Sudo

From Noah.org

Use `visudo` to make changes to /etc/sudoers.

Set timestamp timeout

The following sets the timestamp timeout to 30 minutes for the given YOUR_USERNAME.

Defaults:YOUR_USERNAME timestamp_timeout=30

The following sets the timestamp timeout to 30 minutes for all users:

Defaults timestamp_timeout=30

No password

Allow a specific user to sudo without a password:

YOUR_USERNAME ALL=NOPASSWD: ALL

Allow all users in the admin group to sudo without a password:

%admin ALL=NOPASSWD: ALL