Apache on Mac OSX El Capitan
Note to self:
To start or stop the Apache webserver on Mac OSX El Capitan, use the terminal:
sudo apachectl start
sudo apachectl stop
sudo apachectl restart
The configuration is found in /etc/apache2/httpd.conf. The default DocumentRoot directory is /Library/WebServer/Documents. Additional configuration files should be put in /etc/apache2/other/*.conf files.