child process problem

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1. Shell Programming and Scripting

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...

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. 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...

4. Shell Programming and Scripting

script to get child process for a process

!/bin/sh pid=$(ps -Aj | grep MSTRSvr | grep -v grep | awk '{print $1}') sid=$(ps -Aj | grep MSTRSvr | grep -v grep | awk '{print $3}') ps -s "$sid" I am not able to get the desired output it says process list error if i use watch ps -s "$sid" it considers only the first session id

5. 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,...

6. Shell Programming and Scripting

Child Process Name

Hi , I want to find out the child process name given its PID. I have used the ps command but it displays the parent process name against child PID. Is there any way to find out name of child program executing under any parent program?

7. 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...

8. Programming

Why does my child process not exit?

Im sure it has something to do with the wait() call, but everything ive tried either leaves me with a zombie or with the exec executing indefinitely. switch(pid = fork()) { case -1:perror("fork failed"); exit(1); case 0: if(key == "cd") { execl("/bin/cd", "cd",...

9. UNIX for Dummies Questions & Answers

about child process

hello every one, i want to know more about creation of child process. UNDER WHAT CIRCUMSTANCES child process is created? WHAT ARE THE PREREQUISITES for a child process to be created? let us say we have a prog.c, prog.obj(compiled.c),.a\.out files. is any child PROCESS CREATED...

10. UNIX for Advanced & Expert Users

gdb to child process

Hi, I want to debug a child process which is forked from other process. Whenever I try to attach the pid of child process to gbd, the process gets killed and the parent process starts a new child process. any idea what could be the reason. In general how can i debug a child process...

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