For .service files, you can leave out the .service, because it is assumed by default. Therefore,
sudo systemctl start docker.service
and
sudo systemctl start docker
both start the same service.
Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink.
Hide child comments as well
Confirm
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
For .service files, you can leave out the .service, because it is assumed by default.
Therefore,
sudo systemctl start docker.serviceand
sudo systemctl start dockerboth start the same service.