เปรียบเทียบคำสั่ง CentOS 6.x down vs CentOS 7.x up
service service_name start = systemctl start service_name
service service_name stop = systemctl stop service_name
service service_name restart = systemctl restart service_name
service service_name reload = systemctl reload service_name
service service_name status = systemctl status service_name
chkconfig service_name on = systemctl enable service_name
chkconfig service_name off = systemctl disable service_name
chkconfig --list service_name = systemctl is-enabled service_name
chkconfig --list = systemctl list-unit-files --type=service
