You can use systemctl show myunit.service to display properties of the unit.
It will print all properties associated with that unit file, global configuration and any customizations made in unit file(s).
By default, empty properties are suppressed. Use --all to show those too.
systemctl show myunit.service --all
If you want to check a given property, use the following synthax:
systemctl show myunit.service --property=<PROPERTY_NAME>
#example
#systemctl show myunit.service --property=ExecStart
Note that the output may be not exactly what you expect:
Note that the properties shown by the command are generally more
low-level, normalized versions of the original configuration settings
and expose runtime state in addition to configuration. For example,
properties shown for service units include the service's current main
process identifier as "MainPID" (which is runtime state), and time
settings are always exposed as properties ending in the "...USec"
suffix even if a matching configuration options end in "...Sec",
because microseconds is the normalized time unit used internally by
the system and service manager.
For details about many of these properties, see the documentation of the D-Bus interface backing these properties, see org.freedesktop.systemd1(5).
