The nginx web server can be restarted using any one of the following command line syntax. Use systemctl on systemd based version such as Ubuntu Linux 16.04LTS and above:
sudo systemctl restart nginx
OR
sudo service nginx restart
OR (older Ubuntu Linux version):
sudo /etc/init.d/nginx restart
The same commands can be used to start / stop / restart the nginx server on a Red Hat 7 versions:
sudo systemctl start nginx
sudo systemctl stop nginx
sudo systemctl restart nginx
OR
sudo service nginx start
sudo service nginx stop
sudo service nginx restart
OR
sudo /etc/init.d/nginx start
sudo /etc/init.d/nginx stop
sudo /etc/init.d/nginx restart
To view status of your nginx server, use any one of the following command:
sudo service nginx status
OR
sudo /etc/init.d/nginx status
OR for Red Hat 7, CentOS 7 and higher
sudo systemctl status nginx