init.d scripts for shutdown and reboot

[Cameron Hutchison]

Kailesh Mussai <kmussa at cs.mcgill.ca> writes:

>I am trying to understand how ubuntu does a shutdown.  From what I
>understand in the rc0.d, here is a part of ls -l:

>root at turkana:/etc/rc0.d# ls -l

>lrwxrwxrwx 1 root root  13 2008-10-10 11:45 K01gdm -> ../init.d/gdm
>---snip----
>lrwxrwxrwx 1 root root  22 2008-10-10 11:45 S31umountnfs.sh -> ../init.d/umountnfs.sh
>lrwxrwxrwx 1 root root  17 2008-10-14 10:30 S32portmap -> ../init.d/portmap
>lrwxrwxrwx 1 root root  20 2008-10-10 11:45 S35networking -> ../init.d/networking
>lrwxrwxrwx 1 root root  18 2008-10-10 11:45 S40umountfs -> ../init.d/umountfs
>lrwxrwxrwx 1 root root  20 2008-10-10 11:45 S60umountroot -> ../init.d/umountroot
>lrwxrwxrwx 1 root root  14 2008-10-10 11:45 S90halt -> ../init.d/halt

>The init scripts umountnfs.sh, umountfs, umountroot do nothing when
>started but only when stopped, an example is:

>root at turkana:/etc/rc0.d# /etc/init.d/umountfs start # No-op

>The reason I am asking is, 

I'm not sure what you're asking, as there is no question in your
message.

It may help you to know that in runlevels 0 and 6, the S* scripts are
run with the "stop" argument. In the other runlevels, the S* scripts are
run with the "start" argument. For all runlevels, K* scripts are run
with the "stop" argument.