What dependencies do services need to be activated?

hami zahedi

6/15/23, 6:23 PM

My goal: hierarchically in a tree of dependencies of the systemd-logind.service system.

I used commands to specify a function tree (systemctl, systemd-cgtop). Unfortunately, I did not get an answer.

I want to know what the systemd-logind.service is doing? Does not specify the commands I mentioned above.

In general, it is said that all services are really needed and limited until this service is activated. But it really is so !!

No function is allowed until the service login system is up !! No service can be activated or serviced without a service login system !!

Is the control and rules of file access and access to the user environment the task of the systemd-logind.service? Does the boot stage of the operating system create this feature and environment for the systemd-logind-service?

Please Guide me.

Thanks.

0 + 0

systemd-logind

Jeff

6/15/23, 6:50 PM

Have you considered the fact that most Ubuntu systems (including Ubuntu Server) will automatically install the dependencies to be able to run the services? Systemd-login.service is the service that allows a user to be able to log in to the system (usually for console login, but also is used for user login)

Jeff

6/15/23, 6:51 PM

I believe it grabs usernames and passwords and runs the user's settings (desktop settings and such) for the user who is logging in.

Jeff

6/15/23, 6:54 PM

When you install pretty much any Linux system, it loads the kernel, and then loads installers. Ubiquity automatically sets everything up, and enables and installs the services. On another Linux system (such as Arch) you have to manually enable the services, but they are installed/downloaded when you grab the core, local, and world repositories.

Jeff

6/15/23, 6:56 PM

When Ubuntu is loading, it will automatically start the enabled systemd services, which is why you can login when the GUI starts.

hami zahedi

6/15/23, 8:22 PM

Thank you for your answer. you said that Systemd-login.service is the service that allows a user to be able to log in to the system (usually for console login, but also is used for user login)!!! So is this thinking correct? for Example: if systemd-logind-service disable or put it aside and prevent it from running. There will be a problem with other services! Do we need this service to run and work properly with other services and processes? For example, let's define this service not activated (that is, we cause a problem in the process and operation of the operating system?)

David

6/19/23, 7:11 AM

Since you have not said what version of Ubuntu you are using the info here might not even apply. Any and all questions need to include the version.