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Wheel Group

Here’s an alternate way to give Linux users sudo access by adding them to the wheel group. Most Linux systems come with the wheel group already predefined. By adding users to the wheel group, they now have the ability to sudo and run root commands. The wheel group is in the sudoers file for Redhat, Centos, Debian and Ubuntu.

usermod -aG wheel username

Sudo With No Password

If you’re the only user on your system, you don’t need to be prompted every time you run the sudo command.

Add yourself to the sudoers file.

# create a new file
sudo visudo -f /etc/sudoers.d/users

Add this line.

# add your username
username ALL=(ALL) NOPASSWD:ALL

Exit and try again.

# exit out and login again
exit
# try to sudo again
sudo -i
# there's no password prompt for sudo this time

Sudoers Directory

What’s in the /etc/sudoers.d/ directory? It’s a group of files with the following format as displayed in the code below. In the example, the file allows a Linux group or an AD group to assume the role of root, via the sudo command. As long as the group uses the correct format, and is located inside the /etc/sudoers.d/ directory, that group will have access to root.

%groupname  ALL=(ALL)   NOPASSWD: ALL