CentOS 7 - Disable Root Login

#!/bin/bash
SEARCH="#PermitRootLogin yes"
REPLACE="PermitRootLogin no"
FILEPATH="/etc/ssh/sshd_config"
sudo sed -i "s;$SEARCH;$REPLACE;" $FILEPATH
sudo service sshd restart

The script is exactly the same for debian users, except the last line in which you need to change sshd to ssh