SHELL

stop apache server

# On Ubuntu
## Start command ##
systemctl start apache2.service
## Stop command ##
systemctl stop apache2.service
## Restart command ##
systemctl restart apache2.service

centos stop apache

systemctl restart httpd.service
systemctl start httpd.service
systemctl stop httpd.service

linux apache stop

sudo service apache2 start
sudo service apache2 restart
sudo service apache2 stop

OR 

sudo /etc/init.d/apache2 start
sudo /etc/init.d/apache2 restart
sudo /etc/init.d/apache2 stop

apache 2 stop linux

sudo service apache2 stop

stop apache service

sudo systemctl stop apache2

stop apache server

Stop apache2 server

apache stoped

sudo /Applications/XAMPP/xamppfiles/bin/apachectl start