How to find all the child processes of a parent process Post: 302279442

10 More Discussions You Might Find Interesting

1. 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...

2. 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

3. Shell Programming and Scripting

How to make the parent process to wait for the child process

Hi All, I have two ksh script. 1st script calls the 2nd script and the second script calls an 'C' program. I want 1st script to wait until the 'C' program completes. I cant able to get the process id for the 'C' program (child process) to make the 1st script to wait for the second...

4. Shell Programming and Scripting

[KSH/Bash] Starting a parent process from a child process?

Hey all, I need to launch a script from within 2 other scripts that can run independently of the two parent scripts... Im having a hard time doing this, if anyone knows how please let me know. More detail. ScriptA (bash), ScriptB (ksh), ScriptC (bash) ScriptA, launches ScriptB ScirptB,...

5. Shell Programming and Scripting

Creating a pipe using parent and child processes

Hello, I am trying to create a pipe that will direct stdout to in side of the pipe, and stdin to the out side of the pipe - I created two child processes to handle this. However, my pipe doesn't seem to be working correctly. Did I use execv() correctly? Command1 and command2 represent the two...

6. UNIX for Dummies Questions & Answers

Command to find parent and child process?

Hi, I have a script that calls other scripts/commands which may or may not spawn other process. From my understanding, when I do a ps -ef, the highest numbered process ID is supposed to be the parent ID of all the other related child processes, is this correct? In most or all...

7. Emergency UNIX and Linux Support

signal between parent process and child process

Hello, everyone. Here's a program: pid_t pid = fork(); if (0 == pid) // child process { execvp ...; } I send a signal (such as SIGINT) to the parent process, the child process receive the signal as well as the parent process. However I don't want to child process to receive the...

8. Programming

fork(), parent and child processes???

Hi friends, I have a small question regarding unix system call fork, I hope you will solve my problem. Here is the small program $ cat fork1.c #include <stdio.h> #include <unistd.h> #include <sys/types.h> int main() { int pid; int x = 0; x = x + 1; pid = fork(); if(pid < 0) {...

9. 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...

10. Shell Programming and Scripting

Kill Parent/ Child processes

I am trying to kill PIDs that are tied to a KSH "load_sqlplus" and I am using the below code LIST_PID=`ps -ef | grep -i "load_sqlplus" | grep -v grep | awk '{print $2}'` if ; then echo "Processes killed" "PID : " $LIST_PID kill -9 $LIST_PID else echo "Nothing to Kill" fi...

LEARN ABOUT HPUX

ptree

ptree(1)						      General Commands Manual							  ptree(1)

NAME

       ptree - prints the process tree hierarchy

SYNOPSIS

       [pid1|username1 [pid2|username2]...]

DESCRIPTION

       prints  the process tree of all processes that match the specified arguments.  While printing the tree, the child processes are indented to
       the right from their respective parent processes.

   Options
       Prints the tree starting from the children of
		 (usually pid 0).  The default is to print the tree starting from the children of (pid 1).

   Operands
       pid	 Print the process tree for the process ID number specified by pid.

       username  Print the process tree for all the processes from the user specified by username.  Note that only username (and not user ID)  can
		 be specified for this instance.

       If no operands are specified, then prints the process tree of all processes starting from the children of or (if is specified).

EXTERNAL INFLUENCES

   Environment Variables
       If is not specified or is null, it defaults to (see lang(5)).

EXAMPLES

       Print the process tree for pid 100 and for all processes owned by

WARNINGS

       Process information can change while is running; the tree displayed by is only a snapshot in time.  Some data printed for defunct processes
       is irrelevant.

       Users of must not rely on the exact field widths and spacing of its output, as these will vary depending on the system and the  release	of
       HP-UX.

SEE ALSO

       pgrep(1), pkill(1), ps(1), fork(2).

																	  ptree(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

what are parent and child processes all about?

Discussion started by: xyyz

2. Shell Programming and Scripting

Parent/Child Processes

Discussion started by: yoi2hot4ya

3. Shell Programming and Scripting

How to make the parent process to wait for the child process

Discussion started by: sennidurai

4. Shell Programming and Scripting

[KSH/Bash] Starting a parent process from a child process?

Discussion started by: trey85stang