How to Allow Sudo Without Password in Ubuntu

This guide explains how to configure a specific user to execute sudo commands without entering a password on Ubuntu. You will learn how to safely edit the sudoers file using the visudo command and add the necessary configuration line to grant passwordless privileges. Follow these steps to streamline administrative tasks while maintaining system security best practices.

Open your terminal and run the following command to edit the sudoers file safely. Using visudo is critical because it checks for syntax errors before saving, preventing you from losing sudo access.

sudo visudo

Scroll to the bottom of the file and add the following line. Replace username with the actual name of the user you want to configure.

username ALL=(ALL) NOPASSWD: ALL

Save and exit the editor. If you are using nano, press Ctrl + O then Enter to save, and Ctrl + X to exit. If you are using vim, type :wq and press Enter.

Verify the configuration by switching to the user account and running a sudo command.

sudo apt update

The command should execute immediately without prompting for a password. Be aware that granting passwordless sudo access reduces system security. If an attacker compromises this user account, they will gain full root privileges without any barrier. Only enable this for trusted users or specific automated tasks.