"With the recent announcement of systemd, I've noticed some
increased confusion around Upstart and what it means to be an
event-based init daemon. Now seems as good a time as any to try and
clear that up by describing what I mean by that.
"Before Upstart came along, the state of the art of init daemon
replacements were the dependency-based init daemons. The two most
well-known at the time was the Service Management Facility (SMF) of
Solaris, and initng on Linux.
"The easiest way to understand how a dependency-based init
daemon works is to look at another dependency-based system you're
probably more familiar with: the package manager of your Linux
Some of the products that appear on this site are from companies from which QuinStreet receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. QuinStreet does not include all companies or all types of products available in the marketplace.