>It's not possible to ask systemd about which parts are enabled and up to which extent. It always adds a discovery phase before starting to make changes in a system. If you don't do this discovery, you're probably in a wrestling party with systemd. If you do this discovery, it costs you time. Systemd SHALL provide a way to see how much of its enabled up to what extent.
It absolutely is possible to do this. It's the same as finding out if any service is enabled or not. Every view of a service includes it's state and whether or not it is enabled. So if you want to check an individual service, look at systemctl status $service, and if you want to look at all services: systemctl list-unit-files
And if you want to look at only the enabled ones, you do the Unix thing and "| grep enabled"
I don't see why systemd needs to hardcode a command for this.
Just want to add, when you systemd list-unit-files | grep enabled, you do need to know the first field is the actual state and the second field is the vendor default state.
But this comment is totally right. If you're a Linux sysadmin, how hard is it seriously to type into a search engine "systemd list enabled services." Exactly this command very helpfully comes up in DuckDuckGo's knowledge graph bubble so you don't even need to follow the link to askubuntu. I'm sure Google search does the same.
It absolutely is possible to do this. It's the same as finding out if any service is enabled or not. Every view of a service includes it's state and whether or not it is enabled. So if you want to check an individual service, look at systemctl status $service, and if you want to look at all services: systemctl list-unit-files
And if you want to look at only the enabled ones, you do the Unix thing and "| grep enabled"
I don't see why systemd needs to hardcode a command for this.