Adding myself to the sudoers list.

I like using sudo, so I put myself on the sudoers list by editing the /etc/sudoers file.

su -c 'vi /etc/sudoers'

I uncommented the line shown below to give members of the wheel group permission to run all commands as su.

#%wheel  ALL=(ALL)   ALL

so that it looks like

%wheel  ALL=(ALL)   ALL

Finally, I added myself to the wheel group (my username is joel).

su -c '/usr/sbin/usermod -a -G wheel joel'