How to install init scripts manually?

[Martin T <m4rtntns@gmail.com>]

Hi,

I played around with a LSB init script under Squeeze(init is from
sysvinit package version 2.88dsf-13.1+squeeze1) for learning purposes.
My script is following:

# cat /etc/init.d/test-script
#! /bin/sh
### BEGIN INIT INFO
# Provides:          test
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: test script
# Description:       test script
### END INIT INFO

# always executes
touch /tmp/test-file

case "$1" in
  start)
    echo "Starting script test"
    touch /tmp/test-file-start
    ;;
  stop)
    echo "Stopping script test"
    touch /tmp/test-file-stop
    ;;
  restart)
    echo "Restarting script test"
    touch /tmp/test-file-restart
    ;;
  force-reload)
    echo "Force-reloading script test"
    touch /tmp/test-file-force-reload
    ;;
  status)
    echo "Status of test"
    touch /tmp/test-file-status
    ;;
  *)
    echo "Usage: /etc/init.d/test {start|stop}"
    exit 1
    ;;
esac

exit 0

#


As a next step, I made the /etc/init.d/test-script file executable and
added a symlink to /etc/rc3.d/("ln -s ../init.d/test-script
/etc/rc3.d/S23test-script") directory and changed my runlevel from
2(default) to 3 with "init 3". However, the test-script was not
started. Then I made a symlink to /etc/rc2.d/ directory:

# file /etc/rc2.d/S23test-script
/etc/rc2.d/S23test-script: symbolic link to `../init.d/test-script'
#

..and reloaded the machine, but still the script was not started. If I
install the script with insserv("insserv /etc/init.d/test-script")
then the script is started if I reload the machine. Am I correct that
both insserv and update-rc.d take some additional steps when enabling
the script besides installing the symlinks and those steps are
required by /sbin/init? I guess one thing is .depend.boot,
.depend.start and .depend.stop files, but something else?


regards,
Martin