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

[Steve Dover]

Robert P. J. Day wrote:
> 
>>In your inittab, have an entry that kicks off rcS :
>>
>>::sysinit:/etc/init.d/rcS
>>
>>Have that script do your setup stuff such as mounting /proc, etc.
>>and have it start any background daemons that you want running.
> 
> 
> we're already doing that.  we have that line in our /etc/inittab file, and
> at the bottom of /etc/init.d/rcS, we found the original lines:
> 
> 	if [ -x /sbin/setup.sh ]
> 	then
>   		/sbin/setup.sh
> 	fi
> 
> so we added the invocation of our app to the /sbin/setup.sh file.  the
> invocation involves setting some env vars, then running the program. print
> statements show that the boot time execution is, in fact, getting there,
> but the app is not invoked (or, at least, if it's invoked, it stops
> immediately).
> 
> if, however, we wait until we get a shell prompt, we can run the app fine
> from the command line.  i'm wondering if there's something critical that's
> missing or hasn't been initialized yet earlier in the boot process that
> prevents the app from starting properly.
> 
> i'm fairly familiar with the linux boot sequence, but not that familiar
> with how busybox might change some of that, so we're still a little
> puzzled.
> 
Are you fully qualifiying the path of the executable?