upstart is a replacement for the /sbin/init daemon which handles starting of tasks and services during boot, stopping them during shutdown and supervising them while the system is running.
upstart-compat-sysv | compatibility for System-V-like init | Mehr ...
This package contains compatibility tasks and utilities that emulate the behaviour of the original sysvinit package, including runlevels, and ensures that the initscripts in /etc/rc*.d are still run.
