[BusyBox] how to automatically start an app at boot time?

[Robert P. J. Day]

  currently, a couple of us are grappling with trying to start an app at
boot time.  we're using 1.00-pre5, with

  /linuxrc -> bin/busybox

and a simple inittab with a single shell being started with the "askfirst"
action field.

  our first obvious attempt was to check out /etc/init.d/rcS, and at the
bottom, there is a conditional invocation of /sbin/setup.sh.  so we just
added the invocation of our application to /sbin/setup.sh.

  sadly, our app doesn't get invoked at boot time, but it runs just fine
if we start it manually once we get a shell prompt.

  can someone explain the ideal method for starting the main system
app at boot time?  we need to be able to set a few environment vars
before actually starting it.  so what's the recipe?  thanks.

rday