Allow sudo access without passwords in Ubuntu
To give a specific user access to sudo without having to enter a password you have to edit the /etc/sudoers configuration file. For security reasons you should only edit the file using the visudo command.
$ sudo visudo
In Ubuntu the following lines are placed at the bottom of /etc/sudoers by default. This gives your default [...]
Submit commands as root with sudo
Among the most valuable tools at a Linux administrators disposal is sudo. It lets ordinary users temporarily submit commands as root or another user.
To use use this command simply put sudo before any command you want to run with root permissions.
sudo command
To submit commands as another user use the ‘-u‘ option and the username. [...]