System V /sbin/init (sysvinit)


Maintained and packaged for Debian by Miquel van Smororenburg, it has many features, such as:


Call /etc/initscript to start every init script, if present
Deal with runlevels
Run a configurable script at system startup (/etc/init.d/rcS)
Babysit processes (getty usually)
Execute scripts on SIGPWR, SIGINT, kbrequest
Re-execute itself without state loss
Maintenance mode (runs startup then sulogin)
Emergency mode (runs only sulogin)