User is not in the sudoers file

When attempting to perform certain operations using the sudo command on my Fedora installation, I receive the error message saying

    isaac is not in the sudoers file. This incident will be reported.

Here’s how you can fix it.

1. Log into the root account.
   #su
2. Once in the root account, edit the sudoers file.
   $pico /etc/sudoers
3. Look for the line that looks something like
   root ALL=(ALL) ALL
4. Underneath that line, add your username (in my case, isaac).
   isaac ALL=(ALL) ALL
5. Ultimately, your sudoers file should look something like this

       root    ALL=(ALL) ALL
       isaac   ALL=(ALL) ALL

Note: The sudoers file is a security measure that prevents normal users from executing commands that may harm the system. Use this with great caution.