Question: how to do apache restart?
Answer: Restart Apache 2 web server, enter: # /etc/init.d/apache2 restart. $ sudo /etc/init.d/apache2 restart. ... 
To stop Apache 2 web server, enter: # /etc/init.d/apache2 stop. ... 
To start Apache 2 web server, enter: # /etc/init.d/apache2 start.