startup – event signalling system startup
event is generated by the Upstart
daemon after it has completed its own initialisation and is the signal
that the rest of the system may be started.
Typically this will involve checking and mounting the partitions and
drives that form the filesystem, loading drivers for connected devices
and starting the X windowing system or other login environment.
In the default Upstart configuration, the primary task run on the
event is the
job responsible for generating the System V compatible
event. See that page for a more detailed explanation of this process.
Paradoxically there is currently no corresponding Upstart-native event
signifying that the system is to be shutdown, only the System V compatible
events provide this functionality.
A service with no other dependencies run on startup might use:
start on startup