reboot during kickstart

[Richard Black <richard black hp com>]

I'm working with Red Hat Linux 7.2 and Advanced Server 2.1 and I
need a way to instrument a reboot during a kickstart installation.  The
reason for this is so that I can remotely abort the current kickstart
installation and then start a new one (I am doing pxe installs).  I
already have the remote part worked out, I just need a way to cause
a reboot on the system.

- Is there something in /proc that I can write to?
- What about killing some process - I didn't have much luck other
than in locking up the machine.
- What about an executable already available in anaconda?

I've tried without success:
reboot     (not found)
halt         (not found)
shutdown     (not found)
init 6       (doesn't appear to listen to parameters)
killall5    (locks the system up - not a reboot)

I tried killing the 2nd linuxrc (ps ax), but nothing.
I tried killing the 1st linuxrc, this locked the system up - no reboot.

Thanks in Advance,
Richard Black