ubuntu start mongodb

C++
sudo apt update
sudo apt install -y mongodb
//checking service and db
sudo systemctl status mongodb
or service mongodb status
//start service
sudo systemctl start mongod
or service mongodb start
//stop service
sudo systemctl stop mongod  or
service mongodb stop
sudo systemctl start mongod
sudo systemctl stop mongodsudo mongod --fork --config /etc/mongod.conf
Source

Also in C++: