You will be able to install this from the ports collections if it is installed on your system. To do this, enter the following command:

# cd /usr/ports/security/sudo/
# make install clean

You can also install the sudo binary package using pkg:

# pkg install sudo

Add a Sudo User

First you need to create a user account to use with sudo

# adduser

Answer the questions from the suggested options to create a user. This tutorial will use user.example

Add User to Wheel Group

This group called “Wheel” limits the list of users who can use root

# pw group mod wheel -m user.example

Edit the sudoers file

First, you need to check the sudoers file with visudo extension

# visudo

Look for a wheelset. Remove comment if line is off. When you’re ready to save the file, it should look like this

## Allows people in group wheel to run all commands
%wheel  ALL=(ALL)       ALL

Save and exit vi. ESC type, then : W Q, then ENTER

IMPORTANT! The visudo utility performs a syntax check before making changes to the file. The wrong sudoers file can break your system. Never edit /etc/sudoers directly. For example, if you make a mistake, you will see this when exiting visudo.