The service utility allows to know the current status for the services installed in the system.
However, when invocking service --status-all some services are listed as [+] (running), some as [-] (stopped) and some as [?] (unknown?). How can I know wether a certain service (from those marked as [?]) is running or not?
Maybe I could say that I don't need to use the service utility, just some mechanism to know which services are effectively running and which not.