Overview:

The objective of run level script feature is to allow customers to start and
stop selected applications by changing the run level. The directories are
provided for customers to place their own stop and start scripts.  Sample
scripts are provided in the /etc/rc.d directory.  See the Commands Reference
for information about /etc/inittab, telinit and init command.

Description:

Upon the installation of the feature, the following are added to your system:

   1)Nine directories:

     /etc/rc.d
     /etc/rc.d/rc2.d
     /etc/rc.d/rc3.d
     /etc/rc.d/rc4.d
     /etc/rc.d/rc5.d
     /etc/rc.d/rc6.d
     /etc/rc.d/rc7.d
     /etc/rc.d/rc8.d
     /etc/rc.d/rc9.d

   2)Eight new entries added to your /etc/inittab
     l2:2:wait:/etc/rc.d/rc 2
     l3:3:wait:/etc/rc.d/rc 3
     l4:4:wait:/etc/rc.d/rc 4
     l5:5:wait:/etc/rc.d/rc 5
     l6:6:wait:/etc/rc.d/rc 6
     l7:7:wait:/etc/rc.d/rc 7
     l8:8:wait:/etc/rc.d/rc 8
     l9:9:wait:/etc/rc.d/rc 9

   3)/etc/rc.d/rc script - this script is designed to use the input run level
     to visit the appropriate /etc/rc.d/rc<runlevel>.d and first execute scripts
     in this directory starting with "K" to stop the applications.  Then execute
     scripts starting with "S" to start the applications.

   The /etc/rc.d/samples directory contains two sample shell scripts:
   S70lpd and K70lpd.  The S70lpd script starts the lpd daemon, while
   the K70lpd script kills it.

   These two sample scripts use AIX commands to carry out their functions.
   To use the scripts, the user must copy them to the appropriate rc<run level>.d
   directory, because the /etc/rc.d/rc shell script will only visit the
   directory structures under rc.d.