Hi.

I have a script in /etc/rc.d/init.d named foo. I want to start/stop/restart my process as follows:

$ foo start

But I do not see the [OK] message once it starts. There is no shell prompt returned either. It seems that my own process is the problem.

The executable that foo calls is built from this sample code:

int main()
{
do {
printf("Hello world\n");
sleep(1);
} while (1);
}

Do I have to return some kind of signal handle for this to work?

Thanks for any help.

What's content of your foo script?

It won't return because your program is stuck in a infinite loop.

Hi, the content is:

--------------------
#!/bin/sh

. /etc/rc.d/init.d/functions

case "$1" in
start)
echo -n "Starting foo: "
daemon /home/ju/foo
echo
touch /var/lock/subsys/foo
;;
stop)
echo -n "Shutting down foo: "
killproc /home/ju/foo
echo
rm -f /var/lock/subsys/foo
rm -f /var/run/foo.pid
;;
status)
status foo
;;
restart)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart|reload|status}"
exit 1
esac

exit 0

Yes, but servers also run in infinite loop, waiting for something, like incoming messages, waiting for other processes? How are those applications able to run forever and still able to get prompt back?

example:
# ./network restart
Shutting down interface eth0: [OK]
Shutting down loopback interface: [OK]
Bringing up loopback interface: [OK]
#

I also tried another short program that spawns a child process, I can then issue signal 19 to stop the child process and restart with signal 18.

I still do not see [OK] message and prompt.

Thanks.

how about letting you program run in the background by using the ampersand symbol?

for example:
/usr/local/bin/foo &

hope that helps.