how parent process can control it's child?
 

Hello
I have a question about processes in linux. In my app parent process launch child process, and it is needed when the parent process crash, child process also must exit. Is it any special linux system call to launch child to achive it?

As far as I understand it, all child processes should die if their "mother" process dies. What's the problem?

so, in linux if parent provess die, child process will die too?