systemctl list-dependencies postgres
Will list all the dependencies of the
How do I find all the dependents of a service (or unit, or target)?
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$ systemctl list-dependencies systemd-sysusers.service --all --reverse systemd-sysusers.service ● └─sysinit.target ● ├─accounts-daemon.service ● │ └─graphical.target ● ├─acpid.path ● │ └─paths.target ● │ └─basic.target ● │ └─multi-user.target ● │ └─graphical.target
list-dependencies [UNIT...] Shows units required and wanted by the specified units. This recursively lists units following the Requires=, Requisite=, ConsistsOf=, Wants=, BindsTo= dependencies. If no units are specified, default.target is implied. By default, only target units are recursively expanded. When --all is passed, all other units are recursively expanded as well. Options --reverse, --after, --before may be used to change what types of dependencies are shown. Note that this command only lists units currently loaded into memory by the service manager. In particular, this command is not suitable to get a comprehensive list at all reverse dependencies on a specific unit, as it won't list the dependencies declared by units currently not loaded.