show all running service linux

C++
## List all services
systemctl list-units  --type=service

## List running services
systemctl list-units  --type=service  --state=running

## List all svc in simplified way
service --status-all//to see all runninig services
sudo service --status-all | grep + 

//to start service
sudo service [service name] start

//to stop service
sudo service [service name] stop
  
// to see specific service status
sudo service [service name] status
$ sudo service httpd start
Starting httpd:                                            [  OK  ]

Source

Also in C++: