I am have a Linux board on which I have added one init script under /etc/init.d/ directory. I can start,stop,restart service using script manually. For Debian we do use "update-rc.d" to execute this script at boot time. But i don't have this command, How then can i execute the script at boot time? Is there any alternate way to do this?
inittab has some other uses. The main use is creating "unkillable" service, that will be restarted every time it dies.
If you need just usual service, you can just create symlinks manually. Example from apache, like very typical service with default runlevels.
# ls -la /etc/rc*.d/*apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc0.d/K02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc1.d/K02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc2.d/S02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc3.d/S02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc4.d/S02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc5.d/S02apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 Oct 2 13:45 /etc/rc6.d/K02apache2 -> ../init.d/apache2
So it should be killed at runlevels 0 1 6 and started on runlevels 2 3 4 5.