Configuration of System V init under Debian GNU/Linux

Most Unix versions have a file here that describes how the scripts
in this directory work, and how the links in the /etc/rc?.d/ directories
influence system startup/shutdown.

For Debian, this information is contained in the policy manual, chapter 
"System run levels and init.d scripts".  The Debian Policy Manual is 
available at:

    http://www.debian.org/doc/debian-policy/#contents

The Debian Policy Manual is also available in the Debian package
"debian-policy".  When this package is installed, the policy manual can be
found in directory /usr/share/doc/debian-policy. If you have a browser
installed you can probably read it at

    file://localhost/usr/share/doc/debian-policy/

Required behaviour and arguments of init script are described in Policy, but
for usual cases it is enough to use init-d-script(5). More information about
LSB headers (mentioned in init-d-script manual) is available in insserv(8).