Entering the root password for every system command can be irritating. Learn how to use the sudo command without passwords.

The sudo command on Linux allows users to run certain commands as a different user, preferably root. With sudo access, regular users can perform tasks that would otherwise require elevated privileges.

However, with sudo, users have to enter their passwords for each new session. This can be cumbersome for regular tasks such as system maintenance. Fortunately, you can easily use the sudo command without passwords.

Configure sudo without a password

With the sudoers file on Linux, administrators can manage usage rights for different users. You can give regular users additional permissions by adding them to the Sudoers list. We can also configure sudo usage without passwords by optimizing this file.

Follow the steps below to prevent sudo from ever asking for passwords again. Make sure to switch to the root user first.

Step 1: Back up the Sudoers file

You need to back up the sudoers file before you can modify it. Run the following command in your terminal to make a copy of the sudoers list.

cp / etc / sudoers /etc/sudoers.old

Step 2: Open the Sudoers file

Use the visudo Command to safely open the sudoers file. It offers some protection against unwanted errors and checks the syntax.

visudo

Step 3: modify the sudoers file

When you have the Sudoers list open, go to the bottom of the file and add the following line.

rubaiat ALL = (ALL) NOPASSWD: ALL

Replace rubaiat with your username to prevent Linux from ever asking for the sudo password again. You can also grant sudo to another user without password access by using their username in place of yours.

Step 4: Save and exit Visudo

You need to save visudo and exit after adding the line above. When you have configured visudo to use the Vim editor on your computer, use the following command to save and exit Vim.

: wq

Press Ctrl + X. When visudo uses the nano text editor. You can now verify that everything worked as expected by issuing a command that requires superuser privileges.

Using sudo without passwords on Linux

Once you follow the steps above, you will get sudo access without a password. However, using sudo without passwords can prove to be a security threat if used on untrusted scripts. In addition, anyone with physical access to your computer can perform system operations without authorization.

With the risk of compromising credentials in the workplace increasing, you shouldn't use sudo in your office without passwords.

The risk of compromised credentials and insider threats in the workplace

Learn about the most common types of credentials at risk and insider threats. Protect yourself at home and at work by mitigating these risks before they happen.

Continue reading

About the author

Rubaiat Hossain
(19 articles published)

Rubaiat is a CS graduate with a strong passion for open source. As well as being a Unix veteran, he's also been into network security, cryptography, and functional programming. He is an avid collector of used books and has an endless admiration for classic rock.

More
By Rubaiat Hossain

Subscribe to our newsletter

Sign up for our newsletter to receive tech tips, reviews, free e-books, and exclusive offers!

One more step …!

Please confirm your email address in the email we just sent you.