how to capture PID for a child script Post: 302333741

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Script to kill all child process for a given PID

Is there any build in command in unix to kill all the child process for a given process ID ? If any one has script or command, please let me know. Thanks Sanjay

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Hi, Can anybody solve this query? A parent process forks 2 child processes. How does the child process know it's PID without the parent process sending it. Apart from the "ps-ef" option, what other options are there if any?

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question: for the below program i just printed the value for pid, child pid and parent pid why does it give me 6 values? i assume ppid is 28086 but can't figure out why there are 5 values printed instead of just two! can someone comment on that! #include<stdio.h> #define DIM 8 int...

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In ksh, how does an in-line child sub-process get its own PID?

This is not the same as a few of the other posted items dealing with sub-process pids (that I saw anyway). If zot contains: echo "main mypid: $$ - lastpid: $!" ( echo "block mypid: $$ - lastpid: $! - ppid: $PPID" ps -ef > xxx sleep 5 echo "block mypid: $$ - lastpid: $! - ppid:...

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I am using ZSH shell in Linux. I am calling a child program in background mode parallely (say 2-3 threads). I have problem in handling the temporary files of these child programs since the temp file names are unique for all the child process. To distinguish i want to use the pid in the temp...

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Listing all child pid and deleting it in reverse order

Hi , My problem is that I am not able to list all process id of any process. If you see pstree command it shows many process id under https. But if I run ps command its not listing all the process id for httpd. It is just listing the PPID and immediate child process id only. I...

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How to capture exit code of child script and send it to parent script?

#!/usr/local/bin/bash set -vx /prod/HotelierLinks/palaceLink/bin/PalacefilesWait /prod/HotelierLinks/palaceLink/bin/prodEnvSetup 03212013 & if then echo "fatal error: Palace/HardRock failed!!!!" 1>&2 echo "Palace Failed" | mail -s "Link Failed at Palace/HardRock" -c...

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Getting child process id for a given PID

HI Am trying to get child process id for a PID using ksh.. ps -ef | grep xntpd root 3342472 2228308 0 12:17:40 - 0:00 /usr/sbin/xntpd root 4522024 6488316 0 12:18:56 pts/0 0:00 grep xntpd root 6291614 3342472 0 12:17:40 - 0:00 /usr/sbin/xntpd Here now i...

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)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Script to kill all child process for a given PID

Discussion started by: sanjay92

2. Programming

Child Process PID

Discussion started by: skannan

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printing ppid,child pid,pid

Discussion started by: a25khan

4. Shell Programming and Scripting

In ksh, how does an in-line child sub-process get its own PID?

Discussion started by: MichLab