Status of child job after parent is killed

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Propagate exist status from a child shell script to a parent.

Hi All, I have a parent shell script A and a child shell script B. 1). If a command i.e a mysqdump fails in shell script B fails then I trap the error with this code if ] then func_exit "Failed to export the cleaned DB1.${MYDBNAME} database to the ${MYARCHIVEDIR} directory"...

2. Shell Programming and Scripting

forking a child process and kill its parent to show that child process has init() as its parent

Hi everyone i am very new to linux , working on bash shell. I am trying to solve the given problem 1. Create a process and then create children using fork 2. Check the Status of the application for successful running. 3. Kill all the process(threads) except parent and first child...

3. Homework & Coursework Questions

Need help with deleting child�s parent and child subprocess

1. The problem statement, all variables and given/known data: I need to make an program that in a loop creates one parent and five children with fork(). The problem i'm trying to solve is how to delete the parent and child of the child�s process. 2. Relevant commands, code, scripts,...

4. Shell Programming and Scripting

Running at command - Parent script getting killed

I have a script that calls another script within it that takes about 1 hour to execute. I am noticing that the parent script that calls the child script is getting killed. Does anyone know why? The child script still runs.

5. UNIX for Advanced & Expert Users

Child Killing Parent

Hi all, I am writing a script which calls other third party scripts that perform numerous actions. I have no control over these scripts. My problem is, one of these scripts seems to execute and do what it is meant to do, but my calling / parent script always exits at that point. I need to...

6. UNIX for Dummies Questions & Answers

Who is the parent of a killed process ?

Suppose we have the following process tree: init-> ProcessA->processB->processC then I kill processB Who is the parent of the processC? init or the processA

7. Shell Programming and Scripting

Parent/Child Processes

Hello. I have a global function name func1() that I am sourcing in from script A. I call the function from script B. Is there a way to find out which script called func1() dynamically so that the func1() can report it in the event there are errors? Thanks

8. UNIX for Dummies Questions & Answers

kill parent and child

Hello all, I have gone through the search and looked at posting about idle users and killing processes. Here is my question I would like to kill an idle user ( which I can do) but how can I asure that all of his process is also killed whit out tracing his inital start PID. I have tried this on a...

9. Filesystems, Disks and Memory

How hard can it be? ps child/parent

:( Since I'm fairly new to the scene and don't have much experience in shell programming, I decided to check out the net for a useful script or two. What I'm looking for is a script that would let me enter a PID and then show the process tree associated with it. So it would display the (grand-)...

10. UNIX for Dummies Questions & Answers

what are parent and child processes all about?

I don't follow what these are... this is what my text says... "When a process is started, a duplicate of that process is created. This new process is called the child and the process that created it is called the parent. The child process then replaces the copy for the code the parent...

LEARN ABOUT PHP

pcntl_fork

PCNTL_FORK(3)								 1							     PCNTL_FORK(3)

pcntl_fork - Forks the currently running process

SYNOPSIS

       int pcntl_fork (void  )

DESCRIPTION

	The pcntl_fork(3) function creates a child process that differs from the parent process only in its PID and PPID. Please see your system's
       fork(2) man page for specific details as to how fork works on your system.

RETURN VALUES

	On success, the PID of the child process is returned in the parent's thread of execution, and a 0 is returned in  the  child's	thread	of
       execution. On failure, a -1 will be returned in the parent's context, no child process will be created, and a PHP error is raised.

EXAMPLES

       Example #1

	      pcntl_fork(3) example

	      <?php

	      $pid = pcntl_fork();
	      if ($pid == -1) {
		   die('could not fork');
	      } else if ($pid) {
		   // we are the parent
		   pcntl_wait($status); //Protect against Zombie children
	      } else {
		   // we are the child
	      }

	      ?>

SEE ALSO

       pcntl_waitpid(3), pcntl_signal(3), setproctitle(3).

PHP Documentation Group 													     PCNTL_FORK(3)

Programming