calling system command in daemon

csfalcon · 05-10-2005, 11:16 AM

Hi all,

I wrote some function to monitor some process using popen("ps -e | grep ...") and if no output is there, I try to start the process with system("...").
The function I wrote works as an program, but when I start it as a daemon, it stops working. Anyone knows the reason why? thanks in adance.

LogicG8 · 05-10-2005, 01:17 PM

Well depending on how you implemented your program you may have closed std{in,out,err}
(Possibly opened /dev/null instead) and that could be a problem for you. How about posting the
code, and a more complete definition of "working".

csfalcon · 05-13-2005, 11:17 AM

It turns out the problem was not with my daemon, but the program I was trying to start. Thanks for helping.

For anyone who's interested, here is how I created the daemon:
http://www.csfalcon.com/index.jsp?topic=UNIX%20Daemon